screen displays abnormally on the lenovo M715 with the AMD GPU (Radeon Vega 8 Mobile, rev ca, 1002:15dd)
Bug #1796786 reported by
Hui Wang
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Invalid
|
Critical
|
Hui Wang | ||
Bionic |
Fix Released
|
Critical
|
Unassigned | ||
linux-oem (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
On the machine of Lenovo M715, there is an AMD GPU (1022:15dd rev ca), when it
switchs to amdgpufb, the screen displays abnormally, we tested with a couple monitors,
all of them can reproduce this issue.
[Fix]
Backported 3 patches from mainline kernel, all of them focus on the change of
disable_vga(). After applying these 3 patches, the issue disappears.
[Test Case]
boot the system, run glxgears, everything works well
[Regression Potential]
Very low, these patches come from upstream, and I have tested them on at least 6 different
lenovo machines and those machines have different AMD GPUs on them, all of them worked
as well as before.
CVE References
tags: | added: originate-from-1789801 sutton |
summary: |
- screen displays normally on the lenovo M715 with the AMD GPU (Radeon + screen displays abnormally on the lenovo M715 with the AMD GPU (Radeon Vega 8 Mobile, rev ca, 1002:15dd) |
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Invalid |
Changed in linux (Ubuntu Bionic): | |
importance: | Undecided → Critical |
status: | New → In Progress |
Changed in linux-oem (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in linux-oem (Ubuntu Bionic): | |
status: | New → Fix Committed |
tags: |
added: verification-done-bionic removed: verification-needed-bionic |
Changed in linux-oem (Ubuntu): | |
status: | Invalid → Fix Released |
Changed in hwe-next: | |
status: | New → Fix Released |
tags: | added: cscc |
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This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1796786
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.