Re: PROBLEM: AMD Ryzen 9 7950X iGPU - Blinking Issue

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On 01.05.23 15:27, Alex Deucher wrote:
On Mon, May 1, 2023 at 3:20 AM Felix Richter <judge@xxxxxxxxxxxxxxxxx> wrote:
Hi,

I am running into an issue with the integrated GPU of the Ryzen 9 7950X. It seems to be a regression from kernel version 6.1 to 6.2.
The bug materializes in from of my monitor blinking, meaning it turns full white shortly. This happens very often so that the system becomes unpleasant to use.

I am running the Archlinux Kernel:
The Issue happens on the bleeding edge kernel: 6.2.13
Switching back to the LTS kernel resolves the issue: 6.1.26

I have two monitors attached to the system. One 42 inch 4k Display and a 24 inch 1080p Display and am running sway as my desktop.

Let me know if there is more information I could provide to help narrow down the issue.
It's related to scatter/gather display.  As a workaround, you can
disable scatter/gather display by setting amd.sg_display=0 on the
kernel command line in grub.  It's fixed properly in:
https://gitlab.freedesktop.org/agd5f/linux/-/commit/08da182175db4c7f80850354849d95f2670e8cd9
Which should land in Linus' tree this week.

Alex

Thank you for your quick response. Sadly I have to report that using the workaround kernel parameter did not resolve the issue for me. The monitor still turns full white although less frequently. I'll be sure to look out for the update once it hits mainline ;)

Kind regards,
Felix



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