Ubuntu
linux-hwe-5.13 package

  1. Bug #1960602
  2. Comment #2

Comment 2 for bug 1960602

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Ubuntu 20.04 shows blank upon resuming from resume. Requires hard shutdown using the h/w power button

Thanks for the bug report. The final entry in your kernel log shows that the Intel GPU tried and failed to update the screen:

[ 1216.206745] i915 0000:00:02.0: [drm] *ERROR* Atomic update failure on pipe A (start=73567 end=73568) time 940 us, min 1073, max 1079, scanline start 1033, end 1097

So maybe that's the issue...

Please try (separately):

1. Selecting 'Ubuntu on Wayland' on the login screen just before logging in.

2. Edit /etc/environment and add a line:

   MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0

   Then reboot and select 'Ubuntu on Wayland' again.