Re: 6.10/bisected/regression - commits bc87d666c05 and 6d4279cb99ac cause appearing green flashing bar on top of screen on Radeon 6900XT and 120Hz

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On 6/28/24 9:19 AM, Alex Deucher wrote:
On Fri, Jun 21, 2024 at 6:45 AM Mikhail Gavrilov
<mikhail.v.gavrilov@xxxxxxxxx> wrote:

On Fri, Jun 21, 2024 at 12:56 PM Linux regression tracking (Thorsten
Leemhuis) <regressions@xxxxxxxxxxxxx> wrote:
Hmmm, I might have missed something, but it looks like nothing happened
here since then. What's the status? Is the issue still happening?

Yes. Tested on e5b3efbe1ab1.

I spotted that the problem disappears after forcing the TV to sleep
(activate screensaver <Super> + <L>) and then wake it up by pressing
any button and entering a password.
Hope this information can't help figure out how to fix it.

@Siqueira, Rodrigo @Mahfooz, Hamza any ideas?

Alex

Hi Mikhail,

I'm trying to reproduce this issue, but until now, I've been unable to reproduce it. I tried some different scenarios with the following components:

1. Displays: I tried with one and two displays
 - 4k@120 - DP && 4k@60 - HDMI
 - 4k@244 Oled - DP
2. GPU: 7900XTX
3. OSes:
 - ArchLinux kernel 6.9.6, Gnome (no changes)
 - Ubuntu 22 + latest amd-staging-drm-next + latest firmware, Gnome

Anyway, I could not reproduce the issue with the below components. I may be missing something that will trigger this bug; in this sense, could you describe the following:
- The display resolution and refresh rate.
- Are you able to reproduce this issue with DP and HDMI?
- Could you provide the firmware information: sudo cat /sys/kernel/debug/dri/0/amdgpu_firmware_info

Also, could you conduct the below tests and report the results:

- Test 1: Just revert the fallback patch (drm/amd/display: Add fallback configuration for set DRR in DCN10) and see if it solves the issue. - Test 2: Try the latest amd-staging-drm-next (https://gitlab.freedesktop.org/agd5f/linux) and see if the issue is gone. - Test 3: In the kernel that you see the issue, could you install the latest firmware and see if it fix the issue? Check: https://gitlab.freedesktop.org/drm/firmware P.S.: Don't forget to update the initramfs or something similar in your system.

Thanks
Siqueira



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