Bugzilla – Bug 1168655
Last modified: 2020-04-20 08:03:41 UTC
Created attachment 834886 [details]
Picture of konsolewith blur.
After kernel update to 5.6 all graphics are corrupted like in topography map. I'm using default graphics configuration with no tweaks. This is visible especially on KDE's blur or wallpapers with fading colors.
Graphics: Device-1: Intel HD Graphics 620 vendor: ASUSTeK driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:5916
Display: x11 server: X.Org 1.20.7 driver: modesetting unloaded: fbdev,vesa alternate: intel compositor: kwin_x11
OpenGL: renderer: Mesa DRI Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.0.2 compat-v: 3.0 direct render: Yes
Which kernel did you test? If it's 5.6.0, it has a known regression wrt i915 graphics and has been fixed in 5.6.2 kernel package including the backport fix patch.
If it still shows the problem, please report to the upstream, the issue on gitlab.freedesktop.org.
I've tested only 5.6.0, hen reverted to 5.5.13. I'll check 5.6.2 and report if problem exists. Thank You.
I have managed to install kernel 5.6.2 from kernel:HEAD to test if my problem still exist and it seems that everything is fine.
Great, thanks for confirmation.
Until today I was on 5.5.13, waiting for official update to 5.6.2. After updating to 20200407 kernel 5.6.2 arrived and my bug is still persistent. What was the difference between kernel:HEAD and official release? Why this bug is appearing again?
Problem occurs again after official update to 20200407
Again, I tried kernel 5.6.2-3.1 from kernel:HEAD and when using it everything is ok. What's the difference between them apart being up to date?
Hm werid. Could you try also the kernel in OBS Kernel:stable, too?
Basically both Kernel:HEAD and Kernel:stable and TW kernels should be equivalent at this moment. Kernel:HEAD will start tracking the new -rc upstream kernel once after rc1 is released, but until then both are merged together.
And Kernel:stable is the develproject of TW kernel, i.e. it's the source. It might be newer than the currently released TW kernel, but if Kernel:stable works, TW kernel should work later, too.
That's what I thought. I'll try OBS later in the evening.
So, I'm currently on OBS stable repo with 5.6.3-2.g5b340fd-default kernel and everything is ok.
What I discovered during kernel swapping is that whenever I install a new kernel from external repos, there is a bunch of kernel-firmware-* files, including i915 module. I can't remember when there was such update from original TW repo.
Which repo provides default kernel image for TW?
Unintentionally I found a stupid workaround. When I close lid and open it again everything is back to normal...
(In reply to Adam Szyszko from comment #11)
> Which repo provides default kernel image for TW?
If the current OBS Kernel:stable works, then it must be OK.
Please report back if the official TW kernel later still doesn't work.
The update of kernel-firmware-* was performed just because of either the package version or release numbers are higher in the develproject. They are likely irrelevant and you can take back to TW version.
Thank you for your effort. I'll stick to official update cycle and live with close-open lid for some time. I'll report if anything change.
I even tried to back to official release of KDE because I thought it might be KDE repository relevant but with no luck.
So, for now, I wish you a happy Easter, and thank you very much again.
Update to 5.6.4 fixed my problem. Job done.