| 2024-06-14 03:56:25 |
AceLan Kao |
bug |
|
|
added bug |
| 2024-06-14 03:56:35 |
AceLan Kao |
nominated for series |
|
Ubuntu Noble |
|
| 2024-06-14 03:56:35 |
AceLan Kao |
bug task added |
|
linux (Ubuntu Noble) |
|
| 2024-06-14 03:57:07 |
AceLan Kao |
bug task added |
|
linux-oem-6.8 (Ubuntu) |
|
| 2024-06-14 03:57:18 |
AceLan Kao |
linux (Ubuntu Noble): status |
New |
In Progress |
|
| 2024-06-14 03:57:21 |
AceLan Kao |
linux (Ubuntu Noble): assignee |
|
AceLan Kao (acelankao) |
|
| 2024-06-14 03:57:25 |
AceLan Kao |
linux-oem-6.8 (Ubuntu Noble): status |
New |
In Progress |
|
| 2024-06-14 03:57:28 |
AceLan Kao |
linux-oem-6.8 (Ubuntu Noble): assignee |
|
AceLan Kao (acelankao) |
|
| 2024-06-14 03:59:33 |
AceLan Kao |
linux (Ubuntu): status |
New |
Invalid |
|
| 2024-06-14 03:59:35 |
AceLan Kao |
linux-oem-6.8 (Ubuntu): status |
New |
Invalid |
|
| 2024-06-14 04:17:21 |
AceLan Kao |
description |
[Impact]
[Fix]
[Test]
[Where problems could occur] |
[Impact]
Run `glxgears -fullscreen` and the FPS can't stay at 60 FPS
298 frames in 5.0 seconds = 59.465 FPS
241 frames in 5.0 seconds = 48.193 FPS
261 frames in 5.0 seconds = 52.030 FPS
268 frames in 5.0 seconds = 53.596 FPS
[Fix]
Bisect the kernel and found a commit in v6.9-rc1 fixes the issue
c08c364102d0 drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access
[Test]
1. Run `glxgears -fullscreen` on MTL platforms
2. The FPS should be always around 60
[Where problems could occur]
It's a workaround only affects MTL platforms, and there is no "fixed commit" for this patch after v6.9-rc1. So, it should be safe and essential for MTL platforms. |
|
| 2024-06-17 07:37:46 |
Anthony Wong |
tags |
|
jira-somerville-37 |
|
| 2024-06-17 07:37:53 |
Anthony Wong |
tags |
jira-somerville-37 |
jira-somerville-37 somerville |
|
