** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Mantic)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.1 (Ubuntu Mantic)
Importance: Undecided
Status: Invalid
** 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: (unassigned) => AceLan Kao (acelankao)
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2025195
Title:
HDMI output with More than one child device for port B in VBT error
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.1 source package in Jammy:
In Progress
Status in linux source package in Mantic:
In Progress
Status in linux-oem-6.1 source package in Mantic:
Invalid
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, and wait Intel's fix[2][3] to be available in v6.5 kernel.
1. https://gitlab.freedesktop.org/drm/intel/-/issues/7709
2. https://patchwork.freedesktop.org/series/117641/
3. https://patchwork.freedesktop.org/series/114200/
[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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2025195/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
