Hello,
I got the same problem but i found a way to fix it.
After every Update from 9.0 to 9.6 i have to change the file
home/pi/.xinitrc to get my Display (Waveshare 11.9 widescreen) working again.
I use this how-to
https://moodeaudio.org/forum/showthread.php?tid=6416
In Version 9.6 the file is different than before. Maybe this information helps.
I got the same problem but i found a way to fix it.
After every Update from 9.0 to 9.6 i have to change the file
home/pi/.xinitrc to get my Display (Waveshare 11.9 widescreen) working again.
I use this how-to
https://moodeaudio.org/forum/showthread.php?tid=6416
In Version 9.6 the file is different than before. Maybe this information helps.