In the past "ice-lake-flicker" issues have been related to the audio system(!). That was supposedly fixed in bug 1875254, but your log shows some errors in the same area:
[ 117.852074] sof-audio-pci 0000:00:1f.3: error: no reply expected, received 0x0 [ 117.944970] sof-audio-pci 0000:00:1f.3: firmware boot complete [ 170.252664] sof-audio-pci 0000:00:1f.3: error: no reply expected, received 0x0 [ 170.347691] sof-audio-pci 0000:00:1f.3: firmware boot complete [ 235.442471] sof-audio-pci 0000:00:1f.3: error: no reply expected, received 0x0 [ 235.537670] sof-audio-pci 0000:00:1f.3: firmware boot complete ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888571 Title: [Ice Lake] Screen flickering and glitching after install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs