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Screen artifacts and glitches with AMD Radeon 780M and Debian kernels

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tomekdev
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Hi,

I would like to suggest adding to this guide https://slimbook.com/en/blog/guides-2/post/screen-artifacts-glitches-or-brightness-loss-437 information that with Debian kernels 6.12 screen artifacts disappear when adding kernel parameter:

amdgpu.dcdebugmask=0x200

With parameter specified in mentioned guide artifacts still appear and brightness loss occurres accompanied by sound stuttering and repeating (especially when playing full screen videos). With parameter above alone (without parameter amdgpu.dcdebugmask=0x10) issue is fixed.

I tested this with my Excalibur Blue (earlier called Refresh) with AMD Ryzen 7 8845HS CPU, AMD Radeon 780M GPU and Devuan Excalibur (Debian Unstable without systemd. Has Debian 6.12 kernel). I did not notice any meaningful difference in power consumption (maybe 1W at most).


Best regards,

Tomasz Jeruzalski

Any with AMD Radeon 780M
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Eusebio Giner Slimbook
Mejor respuesta

Good morning,

Perfect, thank you very much for your contribution.

I'll pass a note right now for the technicians to test it and if it works well as you say, add it to the tutorial you mention.

Best regards,


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