RX 6650 XT black rows flashing at random

Mrr7782 · 2024-12-19 14:10:06

I've had this issue for a few weeks by now, unfortunately not sure when exactly it started as the issue's pretty random.
I have whole rows of pixels on my monitors flashing at random, usually when something's happening on the screen, but sometimes even when idling and the only way to fix it I know of right now is rebooting and hoping it doesn't happen again.
I've tried looking for solutions, but all I could find was "disable FreeSync" which didn't help as neither of my monitors support FreeSync and "The top of my monitor was flashing at random but it was fixed in 6.10.3", but I'm on 6.12.4 and it's usually near the bottom of my monitor. I don't really know what else to put here that would be helpful except for my specs

Kernel: linux 6.12.4.arch1-1
CPU: AMD Ryzen 5 1600X
GPU: MSI Radeon RX 6650 XT MECH 2X 8G OC (mesa 1:24.3.1-3)
32GB of 2666 MHz DDR4 RAM
DE: KDE Plasma 6.2.4-1 with kwin 6.2.4-2 on Xorg server 21.1.14-1

I also tried recording a video of it happening but the flickering's actually not showing up on the OBS recording (I was recording my whole screen, not a specific window), which is surprising.
This is probably not related, but it could be, so I'll include it here: around the same time this issue started happening, another issue also started happening where Arch would boot with a wrong resolution on my main monitor for some reason and the top of the tty was just cropped out, but as soon as SDDM started it set the correct resolution (just for the graphical session though, switching to a tty would set the wrong resolution again), and just like the flashing issue, this only happens on some boots.

cryptearth · 2024-12-19 14:17:30

simplest idea: try changing cables from gou to monitor
as you have multiple screens: are all screens affected the same?
what happen if you connect just one screen?
can you test other screens or other sources (like hdmi from some media device)?
does this issue happen on a live medium?
other OS?
tldr: could be anything from simple software issue up to full blown defects of multiple devices

Mrr7782 · 2024-12-19 14:58:05

cryptearth wrote:

simplest idea: try changing cables from gou to monitor
as you have multiple screens: are all screens affected the same?
what happen if you connect just one screen?
can you test other screens or other sources (like hdmi from some media device)?
does this issue happen on a live medium?
other OS?
tldr: could be anything from simple software issue up to full blown defects of multiple devices

1. I unfortunately don't have another DP cable I could use right now, but I don't think that would help much, since ↓
2. Both of my screens flash, the secondary one flashes less, but I'm guessing that's because I do stuff on it less.
3. Disconnected my main screen and now the second one's flashing even more than the first one did.
4. Will test and edit this post
5. Booted into Linux Mint 20.2 from a USB and everything worked fine except for the GPU drivers being a bit broken, but that was expected as the ISO's from before my GPU was released (I unfortunately don't have a different USB to boot off of right now). It only recognised my main display though and set it to 77 Hz for some reason even though it only supports 60 Hz max, but that's probably unrelated as again, wrong drivers.
6. I'm pretty sure this does not happen on Windows 10, although I barely use that OS, but I was booted into it for a few days at a time a few times and don't remember this happening once.

Edit: Booted into win10 again, watched a YouTube video, everything worked fine.
Edit2: Rebooted back into Arch and it's not doing it anymore which is nice, but also how do you troubleshoot something like this when it only happens when it feels like it? (The resolution of the tty's wrong again though)

Last edited by Mrr7782 (2024-12-19 17:03:09)

seth · 2024-12-19 18:50:03

https://bbs.archlinux.org/viewtopic.php … 0#p2213130 ?

Mrr7782 · 2024-12-19 19:32:31

seth wrote:

https://bbs.archlinux.org/viewtopic.php … 0#p2213130 ?

No, the issue I'm having is random lines (over the full width of the monitor) tens of pixels tall of one solid colour flashing. The colour is usually black but sometimes changes, but it's always one solid colour.

Here's a video of the issue after it got really bad (recorded on my phone cause the issue doesn't show up on OBS recordings) (sorry for the horrible quality)
https://konpyujin.cc/share/lines.mp4
(I'll upload the video onto YouTube instead if URLs to personal sites are not allowed)

Last edited by Mrr7782 (2025-01-13 16:38:18)

loqs · 2024-12-19 19:38:32

Have you tested if booting with the kernel parameter `amdgpu.dcdebugmask=0x10` or linux-lts (6.6.Y) has any effect?

Arch Linux

#1 2024-12-19 14:10:06

RX 6650 XT black rows flashing at random

#2 2024-12-19 14:17:30

Re: RX 6650 XT black rows flashing at random

#3 2024-12-19 14:58:05

Re: RX 6650 XT black rows flashing at random

#4 2024-12-19 18:50:03

Re: RX 6650 XT black rows flashing at random

#5 2024-12-19 19:32:31

Re: RX 6650 XT black rows flashing at random

#6 2024-12-19 19:38:32

Re: RX 6650 XT black rows flashing at random

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