Teensy Loader Ubuntu problem

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A new error message showed up just once today. It is not in any of my other syslogs for the past few days. I have not been able to get it to repeat. It was printed out after the Teensy 3.6 was reset into program mode for an automatic upload, but definitely well before the programming timeout ran out.

EDIT: Had it happen again, error messages substantially identical except for time stamps.

Code:
Arduino: 1.8.9 (Linux), TD: 1.46-beta10, Board: "Teensy 3.6, Serial, 180 MHz, Faster, US English"

...snip...

/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-size -A /tmp/arduino_build_491610/clk_sync4spi011.ino.elf
Sketch uses 85084 bytes (8%) of program storage space. Maximum is 1048576 bytes.
Global variables use 57220 bytes (21%) of dynamic memory, leaving 204924 bytes for local variables. Maximum is 262144 bytes.
/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/teensy_post_compile -file=clk_sync4spi011.ino -path=/tmp/arduino_build_491610 -tools=/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools -board=TEENSY36 -reboot -port=/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2 -portlabel=(null) -portprotocol=(null)
com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'send': was expecting ('true', 'false' or 'null')
 at [Source: (ProcessPipeInputStream); line: 224, column: 6]
        at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1804)
        at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:673)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._reportInvalidToken(UTF8StreamJsonParser.java:3526)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2621)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:826)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:723)
        at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2367)
        at cc.arduino.packages.discoverers.PluggableDiscovery.run(PluggableDiscovery.java:86)
        at java.lang.Thread.run(Thread.java:748)
Teensy did not respond to a USB-based request to enter program mode.
Please press the PROGRAM MODE BUTTON on your Teensy to upload your sketch.
An error occurred while uploading the sketch


Search for "...NEW ERROR FOLLOWS..." line.
From syslog:
Code:
Apr 15 04:09:19 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/arduino-builder -dump-prefs -logger=machine -hardware /home/kate/software/arduino/arduino-1.8.9/hardware -hardware /home/kate/.arduino15/packages -tools /home/kate/software/arduino/arduino-1.8.9/tools-builder -tools /home/kate/software/arduino/arduino-1.8.9/hardware/tools/avr -tools /home/kate/.arduino15/packages -built-in-libraries /home/kate/software/arduino/arduino-1.8.9/libraries -libraries /home/kate/Arduino/libraries -fqbn=teensy:avr:teensy36:usb=serial,speed=180,opt=o2std,keys=en-us -ide-version=10809 -build-path /tmp/arduino_build_491610 -warnings=all -build-cache /tmp/arduino_cache_493067 -verbose /home/kate/Arduino/clk_sync4spi011/clk_sync4spi011.ino
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/arduino-builder -compile -logger=machine -hardware /home/kate/software/arduino/arduino-1.8.9/hardware -hardware /home/kate/.arduino15/packages -tools /home/kate/software/arduino/arduino-1.8.9/tools-builder -tools /home/kate/software/arduino/arduino-1.8.9/hardware/tools/avr -tools /home/kate/.arduino15/packages -built-in-libraries /home/kate/software/arduino/arduino-1.8.9/libraries -libraries /home/kate/Arduino/libraries -fqbn=teensy:avr:teensy36:usb=serial,speed=180,opt=o2std,keys=en-us -ide-version=10809 -build-path /tmp/arduino_build_491610 -warnings=all -build-cache /tmp/arduino_cache_493067 -verbose /home/kate/Arduino/clk_sync4spi011/clk_sync4spi011.ino
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: Using board 'teensy36' from platform in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: Using core 'teensy3' from platform in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: Detecting libraries used...
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:20 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads -I/home/kate/Arduino/libraries/FastLED /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads -I/home/kate/Arduino/libraries/FastLED -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2 /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads -I/home/kate/Arduino/libraries/FastLED -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2 -I/home/kate/Arduino/libraries/Time /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /dev/null
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/RTClib-master/RTClib.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3/i2c_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/File.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/SD.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/cache_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/card_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/dir_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/fat_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/file_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/init_t3.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/utility/NXP_SDHC.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/utility/Sd2Card.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/utility/SdFile.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD/utility/SdVolume.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI/SPI.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads/TeensyThreads-asm.S
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads/TeensyThreads.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/FastLED.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/bitswap.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/colorpalettes.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/colorutils.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/hsv2rgb.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/lib8tion.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/noise.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/power_mgt.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/FastLED/wiring.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2/MsTimer2.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/Time/DateStrings.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using cached library dependencies for file: /home/kate/Arduino/libraries/Time/Time.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Generating function prototypes...
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads -I/home/kate/Arduino/libraries/FastLED -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2 -I/home/kate/Arduino/libraries/Time /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /tmp/arduino_build_491610/preproc/ctags_target_for_gcc_minus_e.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/tools-builder/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/arduino_build_491610/preproc/ctags_target_for_gcc_minus_e.cpp
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Compiling sketch...
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/precompile_helper /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 /tmp/arduino_build_491610 /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -x c++-header -O2 -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 /tmp/arduino_build_491610/pch/Arduino.h -o /tmp/arduino_build_491610/pch/Arduino.h.gch
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/pch/Arduino.h.gch
Apr 15 04:09:21 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-g++ -c -O2 -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -fno-exceptions -felide-constructors -std=gnu++14 -Wno-error=narrowing -fno-rtti -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -D__MK66FX1M0__ -DTEENSYDUINO=146 -DARDUINO=10809 -DF_CPU=180000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -I/tmp/arduino_build_491610/pch -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3 -I/home/kate/Arduino/libraries/RTClib-master -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads -I/home/kate/Arduino/libraries/FastLED -I/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2 -I/home/kate/Arduino/libraries/Time /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp -o /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp.o

...snip compiler warnings...

Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling libraries...
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "RTClib-master"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/RTClib-master/RTClib.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "i2c_t3"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/i2c_t3/i2c_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "SD"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/dir_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/File.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/SD.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/cache_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/card_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/file_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/init_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/fat_t3.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/utility/NXP_SDHC.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/utility/Sd2Card.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/utility/SdFile.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SD/utility/SdVolume.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "SPI"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/SPI/SPI.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "TeensyThreads"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/TeensyThreads/TeensyThreads-asm.S.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/TeensyThreads/TeensyThreads.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "FastLED"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/power_mgt.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/noise.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/hsv2rgb.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/colorpalettes.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/wiring.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/bitswap.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/FastLED.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/colorutils.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/FastLED/lib8tion.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "MsTimer2"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/MsTimer2/MsTimer2.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling library "Time"
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/Time/DateStrings.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using previously compiled file: /tmp/arduino_build_491610/libraries/Time/Time.cpp.o
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Compiling core...
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Using precompiled core: /tmp/arduino_cache_493067/core/core_8fb76aa8f050aac0f2ccd9a0b43d8447.a
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Linking everything together...
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-gcc -O2 -Wl,--gc-sections,--relax,--defsym=__rtc_localtime=1555301360 -T/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/cores/teensy3/mk66fx1m0.ld -lstdc++ -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -o /tmp/arduino_build_491610/clk_sync4spi011.ino.elf /tmp/arduino_build_491610/sketch/clk_sync4spi011.ino.cpp.o /tmp/arduino_build_491610/libraries/RTClib-master/RTClib.cpp.o /tmp/arduino_build_491610/libraries/i2c_t3/i2c_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/File.cpp.o /tmp/arduino_build_491610/libraries/SD/SD.cpp.o /tmp/arduino_build_491610/libraries/SD/cache_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/card_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/dir_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/fat_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/file_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/init_t3.cpp.o /tmp/arduino_build_491610/libraries/SD/utility/NXP_SDHC.cpp.o /tmp/arduino_build_491610/libraries/SD/utility/Sd2Card.cpp.o /tmp/arduino_build_491610/libraries/SD/utility/SdFile.cpp.o /tmp/arduino_build_491610/libraries/SD/utility/SdVolume.cpp.o /tmp/arduino_build_491610/libraries/SPI/SPI.cpp.o /tmp/arduino_build_491610/libraries/TeensyThreads/TeensyThreads-asm.S.o /tmp/arduino_build_491610/libraries/TeensyThreads/TeensyThreads.cpp.o /tmp/arduino_build_491610/libraries/FastLED/FastLED.cpp.o /tmp/arduino_build_491610/libraries/FastLED/bitswap.cpp.o /tmp/arduino_build_491610/libraries/FastLED/colorpalettes.cpp.o /tmp/arduino_build_491610/libraries/FastLED/colorutils.cpp.o /tmp/arduino_build_491610/libraries/FastLED/hsv2rgb.cpp.o /tmp/arduino_build_491610/libraries/FastLED/lib8tion.cpp.o /tmp/arduino_build_491610/libraries/FastLED/noise.cpp.o /tmp/arduino_build_491610/libraries/FastLED/power_mgt.cpp.o /tmp/arduino_build_491610/libraries/FastLED/wiring.cpp.o /tmp/arduino_build_491610/libraries/MsTimer2/MsTimer2.cpp.o /tmp/arduino_build_491610/libraries/Time/DateStrings.cpp.o /tmp/arduino_build_491610/libraries/Time/Time.cpp.o /tmp/arduino_build_491610/../arduino_cache_493067/core/core_8fb76aa8f050aac0f2ccd9a0b43d8447.a -L/tmp/arduino_build_491610 -larm_cortexM4lf_math -lm
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-objcopy -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 /tmp/arduino_build_491610/clk_sync4spi011.ino.elf /tmp/arduino_build_491610/clk_sync4spi011.ino.eep
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-objcopy -O ihex -R .eeprom /tmp/arduino_build_491610/clk_sync4spi011.ino.elf /tmp/arduino_build_491610/clk_sync4spi011.ino.hex
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/stdout_redirect /tmp/arduino_build_491610/clk_sync4spi011.ino.lst /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-objdump -d -S -C /tmp/arduino_build_491610/clk_sync4spi011.ino.elf
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/stdout_redirect /tmp/arduino_build_491610/clk_sync4spi011.ino.sym /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-objdump -t -C /tmp/arduino_build_491610/clk_sync4spi011.ino.elf
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/teensy_post_compile -file=clk_sync4spi011.ino -path=/tmp/arduino_build_491610 -tools=/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/ -board=TEENSY36
Apr 15 04:09:24 DellLaptop arduino-arduinoide.desktop[2072]: Opening Teensy Loader...
Apr 15 04:09:24 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Window 0x2800009 (Programmin) sets an MWM hint indicating it isn't resizable, but sets min size 150 x 65 and max size 2147483647 x 2147483647; this doesn't make much sense.
Apr 15 04:09:24 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x2800047 specified for 0x2800009 (Programmin).
Apr 15 04:09:24 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Window 0x2800009 (Programmin) sets an MWM hint indicating it isn't resizable, but sets min size 150 x 65 and max size 2147483647 x 2147483647; this doesn't make much sense.
Apr 15 04:09:24 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Window 0x2800047 (Teensy) sets an MWM hint indicating it isn't resizable, but sets min size 180 x 197 and max size 2147483647 x 2147483647; this doesn't make much sense.
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Multiple libraries were found for "FastLED.h"
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Used: /home/kate/Arduino/libraries/FastLED
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Not used: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/FastLED
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Multiple libraries were found for "TimeLib.h"
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Used: /home/kate/Arduino/libraries/Time
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Not used: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/Time
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Multiple libraries were found for "SD.h"
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Used: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]:  Not used: /home/kate/software/arduino/arduino-1.8.9/libraries/SD
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library RTClib-master at version 1.2.1 in folder: /home/kate/Arduino/libraries/RTClib-master
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library i2c_t3 in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/i2c_t3 (legacy)
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library SD at version 1.2.2 in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SD
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library SPI at version 1.0 in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/SPI
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library TeensyThreads at version 1.0 in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/TeensyThreads
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library FastLED at version 3.2.6 in folder: /home/kate/Arduino/libraries/FastLED
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library MsTimer2 at version 1.1 in folder: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/avr/libraries/MsTimer2
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Using library Time at version 1.5 in folder: /home/kate/Arduino/libraries/Time
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/arm/bin/arm-none-eabi-size -A /tmp/arduino_build_491610/clk_sync4spi011.ino.elf
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Sketch uses 85084 bytes (8%) of program storage space. Maximum is 1048576 bytes.
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: Global variables use 57220 bytes (21%) of dynamic memory, leaving 204924 bytes for local variables. Maximum is 262144 bytes.
Apr 15 04:09:25 DellLaptop arduino-arduinoide.desktop[2072]: /home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools/teensy_post_compile -file=clk_sync4spi011.ino -path=/tmp/arduino_build_491610 -tools=/home/kate/software/arduino/arduino-1.8.9/hardware/teensy/../tools -board=TEENSY36 -reboot -port=/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2 -portlabel=(null) -portprotocol=(null)
Apr 15 04:09:26 DellLaptop kernel: [264891.988157] cdc_acm 2-1.2:1.0: failed to set dtr/rts
Apr 15 04:09:26 DellLaptop kernel: [264892.185090] usb 2-1.2: USB disconnect, device number 22

...snip colord...

...NEW ERROR FOLLOWS...

Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'send': was expecting ('true', 'false' or 'null')
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]:  at [Source: (ProcessPipeInputStream); line: 224, column: 6]
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1804)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:673)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._reportInvalidToken(UTF8StreamJsonParser.java:3526)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2621)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:826)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:723)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2367)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at cc.arduino.packages.discoverers.PluggableDiscovery.run(PluggableDiscovery.java:86)
Apr 15 04:09:27 DellLaptop arduino-arduinoide.desktop[2072]: #011at java.lang.Thread.run(Thread.java:748)
Apr 15 04:09:43 DellLaptop arduino-arduinoide.desktop[2072]: Teensy did not respond to a USB-based request to enter program mode.
Apr 15 04:09:43 DellLaptop arduino-arduinoide.desktop[2072]: Please press the PROGRAM MODE BUTTON on your Teensy to upload your sketch.
Apr 15 04:09:43 DellLaptop arduino-arduinoide.desktop[2072]: An error occurred while uploading the sketch
Apr 15 04:14:41 DellLaptop org.gnome.Shell.desktop[2072]: [Parent 12679, Gecko_IOThread] WARNING: pipe error (109): Connection reset by peer: file /build/firefox-bSHUpI/firefox-66.0.2+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 357
Apr 15 04:14:41 DellLaptop org.gnome.Shell.desktop[2072]: [Parent 12679, Gecko_IOThread] WARNING: pipe error (63): Connection reset by peer: file /build/firefox-bSHUpI/firefox-66.0.2+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 357
Apr 15 04:14:46 DellLaptop chromium-browser.desktop[2072]: [12945:12945:0415/041446.469209:ERROR:sandbox_linux.cc(364)] InitializeSandbox() called with multiple threads in process gpu-process.
Apr 15 04:14:53 DellLaptop systemd-resolved[500]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Apr 15 04:14:53 DellLaptop systemd-resolved[500]: message repeated 2 times: [ Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.]
Apr 15 04:15:06 DellLaptop chromium-browser.desktop[2072]: [12908:12908:0415/041506.848675:ERROR:textfield.cc(1768)] Not implemented reached in virtual bool views::Textfield::ShouldDoLearning()
Apr 15 04:17:01 DellLaptop CRON[13402]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Apr 15 04:28:31 DellLaptop wpa_supplicant[772]: wlp2s0: WPA: Group rekeying completed with dc:9f:db:6a:37:54 [GTK=CCMP]
Apr 15 04:28:58 DellLaptop kernel: [266063.986140] usb 2-1.2: new full-speed USB device number 23 using ehci-pci
Apr 15 04:28:58 DellLaptop kernel: [266064.095434] usb 2-1.2: New USB device found, idVendor=16c0, idProduct=0478, bcdDevice= 1.03
Apr 15 04:28:58 DellLaptop kernel: [266064.095442] usb 2-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=1
Apr 15 04:28:58 DellLaptop kernel: [266064.095447] usb 2-1.2: SerialNumber: 0007F8AA
Apr 15 04:28:58 DellLaptop kernel: [266064.097204] hid-generic 0003:16C0:0478.0006: hidraw2: USB HID v1.11 Device [HID 16c0:0478] on usb-0000:00:1d.0-1.2/input0
Apr 15 04:28:58 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Window 0x2800009 (Programmin) sets an MWM hint indicating it isn't resizable, but sets min size 150 x 65 and max size 2147483647 x 2147483647; this doesn't make much sense.
Apr 15 04:28:58 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Window 0x2800009 (Programmin) sets an MWM hint indicating it isn't resizable, but sets min size 150 x 65 and max size 2147483647 x 2147483647; this doesn't make much sense.
Apr 15 04:28:58 DellLaptop org.gnome.Shell.desktop[2072]: Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x2800009 (Programmin)

...snip colord...

Apr 15 04:28:59 DellLaptop kernel: [266065.588410] usb 2-1.2: USB disconnect, device number 23
Apr 15 04:29:00 DellLaptop kernel: [266066.254058] usb 2-1.2: new full-speed USB device number 24 using ehci-pci
Apr 15 04:29:00 DellLaptop kernel: [266066.363964] usb 2-1.2: New USB device found, idVendor=16c0, idProduct=0483, bcdDevice= 2.77
Apr 15 04:29:00 DellLaptop kernel: [266066.363972] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 15 04:29:00 DellLaptop kernel: [266066.363977] usb 2-1.2: Product: USB Serial
Apr 15 04:29:00 DellLaptop kernel: [266066.363981] usb 2-1.2: Manufacturer: Teensyduino
Apr 15 04:29:00 DellLaptop kernel: [266066.363985] usb 2-1.2: SerialNumber: 5224100
Apr 15 04:29:00 DellLaptop kernel: [266066.364584] cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device

The colord warnings come every time there is a physical or logical plugging or unplugging of a USB device. Does not matter if the Arduino programming environment is running or not, nor does it matter if the Teensy programmer program is running or not.
 
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