After an external display over USB-C turns off and on again, the resolution is set to 640x480 (log shows it things the screen size is (0,0)). If I let the monitor go to standby again a few times, the resolution will be correct after a while.
I’m currently on the 560 driver on Fedora Linux, but the situation was the same with 555.
STEPS TO REPRODUCE
- Boot to desktop
- Don’t do anything and let the monitor go to standby
- Press any key to wake it up
OBSERVED RESULT
Screen resolution is 640x480
EXPECTED RESULT
Screen resolution should not change
See some more details (logs, screenshots) here: 488201 – Screen's resolution is 480x640 after woken from standby, until unplugged and re-plugged