If you're playing with Arduino 1.8.19 and also Arduino 2.0-rc6-nightly, this modified arduino-core.jar solves the conflicting packages problem in Arduino IDE 1.8.19.
To use it, quit Arduino and then just copy arduino-core.jar to C:\Program Files (x86)\Arduino\lib, replacing the copy in that directory. Or if using Linux or your copy of Arduino 1.8.19 is located somewhere else, just copy this to its lib folder.
When you restart Arduino 1.8.19, it should ignore the Teensy package you installed for Arduino IDE 2.0, and always use the files from the Teensyduino installer.
1.57-beta3 will include this change, so all future installers will avoid this conflict on pre-2.0 Arduino. But if you're running 1.57-beta2 or even 1.56, this will give you immediate relief from the package conflict pain.
Looks like the language server isn't paying attention to the selected USB type. I opened an issue on github.
https://github.com/arduino/arduino-ide/issues/1029
...
Also an interesting issue, where I had an example open, then went outside and did something for awhile, came back and the window was empty. Turns out Norton decided to do a disk cleanup and removed the INO files out of the temp directory, so all of the files were gone and window was empty. It also had some cryptic message in the window console area, about to many files to keep track of what files changed... Not sure what files? Maybe ones in trash?
...
/**********************************************************************/
/*!
@brief Set text font color with transparant background
@param c 16-bit 5-6-5 Color to draw text with
@note For 'transparent' background, background and foreground
are set to same color rather than using a separate flag.
*/
/**********************************************************************/
void setTextColor(uint16_t c) { textcolor = textbgcolor = c; }
...
When I went to file examples for the T4.1 looked for our SD Library on the list it wasn;t there - maybe it was my eyes but here is a screen grab
Multiple libraries were found for "SD.h"
Used: C:\T_Drive\arduino-1.8.19\hardware\teensy\avr\libraries\SD
Not used: C:\T_Drive\Arduino-1.8.19\libraries\SD
@KurtE
Had to redo a bunch of reinstalls on the PI4 and wasted time with the M2 memory drive on the PI4 so ..
Just finished reinstalling IDE 2 on the PI4 using the appimage route and installed the Teensy boards without any issue but noticed something else strange. When I went to file examples for the T4.1 looked for our SD Library on the list it wasn;t there - maybe it was my eyes but here is a screen grab
View attachment 28661