[SOLVED] Video Corruption / Fedora 44 /w KDE 6.7.2 / BIOS: 04.04

Framework Laptop 16 Linux
1

Which Linux distro are you using?
Fedora 44 /w KDE 6.7.2 Wayland

Which release version?
44 /w KDE 6.7.2

Which kernel are you using?
7.1.3-200.fc44.x86_64

Which BIOS version are you using?
04.04

├─Ryzen 9 7940HS w/ Radeon 780M Graphics:
│ │ Device ID: 4bde70ba4e39b28f9eab1628f9dd6e6244c03027
│ │ Current version: 0x0a70410a
│ │ Vendor: AMD
│ │ GUIDs: 2a1df9de-fe02-59c8-8af1-32c8bb011f94 ← CPUID\PRO_0&FAM_19&MOD_74
│ │ 5a4bca32-6547-584f-bb36-920d9adede25 ← CPUID\PRO_0&FAM_19&MOD_74&STP_1
│ │ Device Flags: • Internal device
│ │
│ ├─Radeon 780M Graphics:
│ │ │ Device ID: ab66dd4442bdf3ad5d4101887804658d6045632a
│ │ │ Summary: AMD AMD_PHOENIX_GENERIC
│ │ │ Current version: 1
│ │ │ Vendor: AMD (PCI:0x1002)
│ │ │ GUID: 4a1501b7-b500-5255-9d9c-41d652a4d5bc ← AMD\113-PHXGEN
│ │ │ Device Flags: • Internal device
│ │ │ • Can tag for emulation

Which Framework Laptop 16 model are you using? (AMD Ryzen™ 7040 Series)
Ryzen™ 9 7940HS /w AMD Radeon™ RX 7700S (1st Gen)

Issue: Off and on video corruption that I can’t pin down to any one thing. I can’t tell if this is a hardware issue or a OS / software issue.

The corruption lasts for only a few milliseconds. And its not consistent. It absolutely comes and goes. However alt tabing from window to window seems to be more consistent when I see it.

The below I only was able to capture by recording video at high FPS and screen shoting it by playing back frame by frame.

image
image1365×771 144 KB

image
image1187×719 116 KB

Things that I have tried.
-Video recording through screen capture…no corruption seen.
-Reseated the eDP Cable on both ends…no change.
-Removing the dGPU to purely use the iGPU…no change.
-Reimaged (upgraded from Fedora 43 to 44)…no change
-dnf update…no change.
-External monitor through HDMI port on laptop…no video corruption which is interesting.
-Replaced the eDP Cable…no change.
-Tried adding sudo grubby --update-kernel=ALL --args=“amdgpu.dcdebugmask=0x40”…no change.

I do not know if I’m dealing with a software issue, a display issue, or a motherboard issue at this point. The above looks like a GPU VRAM issue but really not sure.

Any thoughts?

2

I have very occasionally seen something similar only after upgrading from F42 KDE, you could try changing adaptive sync to always as suggested here (and elsewhere online) for a somewhat similar issue Weird pixelated glitches on my screen after installing fedora on my new laptop - #2 by Andy_Coder . I also had issues on older versions of Fedora when EDR (Extended Dynamic Range) was active so you try changing that setting too. I think hardware is less likely the issue, you could try a live disk of another distro to get some insight.

3

Interesting. I missed that setting. Setting it now and I’ll report back. Thanks!

1 Like
4

I suspect this is a bug in the KWin compositor: Weird pixelated glitches on my screen after installing fedora on my new laptop - #9 by TechPriestNhyk

Mods, I think this is a duplicate threat with the other one linked. It may be desirable to merge them.

1 Like
5

I’ve been having a very similar issue on the same hardware but with Bazzite DX for a long time. Recently I started using my built-in display a lot more and so it finally annoyed me enough to put some time into it.

After trying to diagnose it for a few hours with Claude, adding this to the kernel command line fixed it for me: amdgpu.dcdebugmask=0x400

Hope this helps!

6

This did work. Thanks.

1 Like
7

Nope it was the adaptive sync setting that fixed it.

8

Happy to hear it worked :slightly_smiling_face: