** Summary changed:
- glxgears -fullscreen has noises on the gear edges on AMD Krackan Point
platforms with QHD panel
+ glxgears -fullscreen has noises on the gear edges on AMD Hawk Point platforms
with QHD panel
** Description changed:
+ [SRU Justification]
+
+ [ Impact ]
+
+ Noises on the gears' edges when running `glxgears -fullscreen` test on
+ AMD Hawk Point platforms with QHD panel.
+
+ Proposed fix is to update amdgpu/dcn_3_1_4_dmcub.bin from latest
+ upstream HEAD commit 25750add9b77 ("amdgpu: DMCUB updates for various
+ ASICs"), which has been in linux-firmware version
+ 20250606.git3b75d677-0ubuntu1.
+
+ [ Test Plan ]
+
+ Run `glxgears -fullscreen` and observe if there are still unexpected
+ noises/shadows on the gears edges.
+
+ [ Where problems could occur ]
+
+ Opaque firmware from latest upstream HEAD. There might be unknown
+ dependencies to the driver implementation that we simply cannot know in
+ advance.
+
+ [ Other Info ]
+
+ While this has been in Questing, nominate for series with supported
+ kernels, Plucky, Oracular and Noble for oem-6.11.
+
+ ========== original bug report =========
+
[Summary]
When running glxgears -fullscreen, there is noise on the screen.
[Steps to reproduce]
1. Boot into OS
2. glxgears -fullscreen
[Expected result]
When running glxgears -fullscreen, there is no noise on the screen.
[Actual result]
When running glxgears -fullscreen, there is noise on the screen.
[Failure rate]
3/3 units.
[Additional information]
Issue can only be reproduced on QHD panel.
SKU: Sentry MLK KRK R7
Image: somerville-noble-oem-24.04b-20250411-108.iso
bios-version: 0.4.6
CPU: AMD Ryzen AI 7 350 w/ Radeon 860M
GPU: 03:00.0 Display controller [0380]: Advanced Micro Devices, Inc.
[AMD/ATI] Device [1002:1114] (rev c2)
kernel-version: 6.11.0-1018-oem
** Description changed:
[SRU Justification]
[ Impact ]
Noises on the gears' edges when running `glxgears -fullscreen` test on
AMD Hawk Point platforms with QHD panel.
Proposed fix is to update amdgpu/dcn_3_1_4_dmcub.bin from latest
upstream HEAD commit 25750add9b77 ("amdgpu: DMCUB updates for various
ASICs"), which has been in linux-firmware version
20250606.git3b75d677-0ubuntu1.
[ Test Plan ]
Run `glxgears -fullscreen` and observe if there are still unexpected
noises/shadows on the gears edges.
[ Where problems could occur ]
Opaque firmware from latest upstream HEAD. There might be unknown
dependencies to the driver implementation that we simply cannot know in
advance.
[ Other Info ]
While this has been in Questing, nominate for series with supported
kernels, Plucky, Oracular and Noble for oem-6.11.
========== original bug report =========
[Summary]
When running glxgears -fullscreen, there is noise on the screen.
[Steps to reproduce]
1. Boot into OS
2. glxgears -fullscreen
[Expected result]
When running glxgears -fullscreen, there is no noise on the screen.
[Actual result]
When running glxgears -fullscreen, there is noise on the screen.
[Failure rate]
3/3 units.
[Additional information]
Issue can only be reproduced on QHD panel.
- SKU: Sentry MLK KRK R7
- Image: somerville-noble-oem-24.04b-20250411-108.iso
- bios-version: 0.4.6
- CPU: AMD Ryzen AI 7 350 w/ Radeon 860M
- GPU: 03:00.0 Display controller [0380]: Advanced Micro Devices, Inc.
[AMD/ATI] Device [1002:1114] (rev c2)
+ CID: 202504-36720
+ SKU: SENMLKD14-DVT1-A2
+ bios-version: 0.1.1
+ CPU: AMD Ryzen 7 H 250 w/ Radeon 780M (16x)
+ GPU: 03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Device [1002:1900] (rev b5)
+ amd-vbios: 113-PHXGENERIC-001["1900"]
- kernel-version: 6.11.0-1018-oem
+ kernel-version: 6.11.0-1021-oem
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https://bugs.launchpad.net/bugs/2114157
Title:
glxgears -fullscreen has noises on the gear edges on AMD Hawk Point
platforms with QHD panel
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