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#1 2020-04-01 10:15:32

gabbla
Member
Registered: 2020-04-01
Posts: 2

Dell XPS9570 Visual Artifacts

Hi all,

a couple of days ago I updated my home laptop (Dell XPS 15 9570 FHD) from 4.19.113-1 to 5.4.28-1-lts without any major issue. After a couple of minutes since reboot I noticed horizontal visual artifacts. Them are pretty random and happens in any window (firefox, terminal, file manager).

Could you help me debug this issue?

Thank you,
Gabriele

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#2 2020-04-01 10:34:44

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,409

Re: Dell XPS9570 Visual Artifacts

"Just" the kernel or was the entire system that outdated? That's a large number of packages and versions, but if I had to hazard a guess, I'd say the biggest relevant change in that regard will be the switch of the default GL implementation for modern intel chipsets in mesa, check if using the old driver helps here. (And mesa also saw an update a "couple of days" ago so ensure that's at least 20.0.2)

Also the other usual culprit, remove xf86-video-intel and any configuration mentioning it to use the generic and  for modern chipsets generally better tested modesetting driver.

Last edited by V1del (2020-04-01 10:41:13)

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#3 2020-04-01 23:10:38

gabmrs07
Member
Registered: 2020-04-01
Posts: 2

Re: Dell XPS9570 Visual Artifacts

My computer have the same issue after the last mesa update. I just downgraded it to the version 19.3.4-2 and the problem was solved.
Are this visual issues something related to the mesa package itself or with some interation with other drivers? I've installed currently the xf86-video-fbdev and xf86-video-vesa.

Last edited by gabmrs07 (2020-04-01 23:12:03)

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#4 2020-04-02 07:41:06

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,409

Re: Dell XPS9570 Visual Artifacts

These other drivers you mention are irrelevant on normal HW anyway, but yes this is currently an issue in mesa itself. They added a new OpenGL implementation for newer intel chips and that seems to have some issues still, instead of opting for a downgrade of the package as a whole, you can follow that directive I linked to, to switch to the older more mature OpenGL implementation.

See https://bugs.archlinux.org/task/66029 as well.

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#5 2020-04-02 17:07:18

gabbla
Member
Registered: 2020-04-01
Posts: 2

Re: Dell XPS9570 Visual Artifacts

V1del wrote:

"Just" the kernel or was the entire system that outdated? That's a large number of packages and versions, but if I had to hazard a guess, I'd say the biggest relevant change in that regard will be the switch of the default GL implementation for modern intel chipsets in mesa, check if using the old driver helps here. (And mesa also saw an update a "couple of days" ago so ensure that's at least 20.0.2)

Also the other usual culprit, remove xf86-video-intel and any configuration mentioning it to use the generic and  for modern chipsets generally better tested modesetting driver.

Hi, sorry for the delay.
It was a full system upgrade. Currently running mesa 20.0.2. I also followed the instruction you linked, let's see what happens.

Thank you for your support,
Gabriele

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#6 2020-04-02 23:21:44

gabmrs07
Member
Registered: 2020-04-01
Posts: 2

Re: Dell XPS9570 Visual Artifacts

V1del wrote:

These other drivers you mention are irrelevant on normal HW anyway, but yes this is currently an issue in mesa itself. They added a new OpenGL implementation for newer intel chips and that seems to have some issues still, instead of opting for a downgrade of the package as a whole, you can follow that directive I linked to, to switch to the older more mature OpenGL implementation.

See https://bugs.archlinux.org/task/66029 as well.

I followed the instructions to set the MESA_LOADER_DRIVER_OVERRIDE=i965 in /etc/environment. I dont have experienced the bug since I made it and updated the mesa package.
Thanks!

Last edited by gabmrs07 (2020-04-02 23:22:11)

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