Testing request: graphical corruption on Intel laptops on kernel 6.19

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Hey folks!

There are a couple of proposed blockers for Fedora 44 Beta which seem to be hardware-specific, both on Intel graphics:

In deciding whether these should be release blockers, it would be helpful to know if they affect other hardware. If folks (who are comfortable with testing pre-release stuff) who have laptops with Intel graphics could test booting a Fedora 44 nightly or just a kernel 6.19 build from Koji and see if they’re affected by any graphical corruption / flickering / tearing, that’d be great. If you do have a problem, please test whether booting with i915.enable_psr=0 avoids it, and maybe whether it differs based on whether an external display is plugged in.

Thanks a lot!

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Is it any particular “generation” of Intel graphics, or are all of them potentially affected?

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XPS Plus 9320 was 12th/13th gen Intel, apparently. The systems from the other bug are Meteor Lake.

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Cool. FWIW I tried Fedora 44 KDE nightly on my 8th gen iGPU-only laptop and I didn’t see any such graphical issues.

That’s probably of fairly low informational value though, if newer chips are the ones likely to be affected.

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Affected user here!:sweat_smile:

Based on tests on my own devices and feedback from friends I know, I roughly speculate that it may be related to the following factors:

  1. Intel processors newer than MTL or ARL

  2. 120Hz high-refresh-rate screens, or screens that support Variable Refresh Rate (VRR)

I have also seen some other related bugs,

such as this one: github.com/CachyOS/linux-cachyos/issues/716

Some AMD users reported issues with VRR on external displays after kernel 6.19. While a subsequent fix worked for some users, it did not for others.

This bug likely affects newer machines more, so we may need users with new laptop to test it.We could also reach out to some OEMs for help.

I personally tried emailing Mark Pearson, Lenovo’s Linux technical support, to report this issue, but haven’t received a response yet.

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Please provide your hardware specs, thanks.

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ThinkPad P14s Gen5
Intel ARL-H 285H
14.5 inch (3072 x 1920) IPS panel with 120Hz