My laptop keeps on having weird screen glitches, sometimes for a second, and that goes away just by moving the cursor, sometimes, making me restart the whole thing.
I could still use the play/pause key and it still played/paused the video that was running even though the screen was completely teared.
Also, printscreens actually print a normal screen and do not show the problem.
Some pictures of the screen when it happens :
image1
image2
Do you guys know what I could do to solve the issue ?
Best Answer
This is not screen tearing, these are quite severe graphical glitches, which you may find occur more frequently when on battery power. This is probably related to a more recent type of Intel graphics in that laptop, and the kernel mode drivers still need to catchup.
See whether adding
i915.enable_psr=0to your kernel boot line helps. For how to add that particular command line option, I can refer to another post on AskUbuntu. This disables a power saving feature and so will cause your system to use a bit more battery.Update: I still need the setting in Ubuntu 20.04 on kernel 5.4.0-40-generic
Update: I may still need it on 20.10: after resuming from a blank screen, glitches occurred.