HDMI output with More than one child device for port B in VBT error
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
AceLan Kao | ||
Jammy |
Won't Fix
|
Undecided
|
Unassigned | ||
Mantic |
Fix Released
|
Undecided
|
AceLan Kao | ||
linux-oem-6.1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Undecided
|
AceLan Kao | ||
Mantic |
Invalid
|
Undecided
|
Unassigned |
Bug Description
[Impact]
The HDMI monitor doesn't work, no events while plug/unplug then cable.
[Fix]
From the bug report[1], skip the return workaround the issue, so I created the DMI quirk to list affected platforms.
Intel is submitting patches[2][3] to fix the issue, but it requires to
backport huge drm structure changes, too. As there is no regression
found with this workaround, it's safer to use the DMI quirk to handle
this issue.
1. https:/
2. https:/
3. https:/
[Test]
Verified by me, FE, and ODM.
[Where problems could occur]
I have no idea what might happen, so only make the workaround avaiable on the listed platforms. So far, no regressions have been observed with plug/unplug, switch modes, reboot, and suspend tests.
Changed in linux (Ubuntu Mantic): | |
status: | New → In Progress |
Changed in linux (Ubuntu Jammy): | |
status: | New → Won't Fix |
Changed in linux (Ubuntu Mantic): | |
assignee: | nobody → AceLan Kao (acelankao) |
tags: | added: patch |
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
status: | In Progress → Fix Committed |
description: | updated |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
This bug is awaiting verification that the linux-oem- 6.1/6.1. 0-1017. 17 kernel in https:/ /launchpad. net/~canonical- kernel- team/+archive/ ubuntu/ proposed2 solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- jammy' to 'verification- done-jammy' . If the problem still exists, change the tag 'verification- needed- jammy' to 'verification- failed- jammy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!