This bug was fixed in the package linux - 6.5.0-5.5
---------------
linux (6.5.0-5.5) mantic; urgency=medium
* mantic/linux: 6.5.0-5.5 -proposed tracker (LP: #2034546)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
- debian/dkms-versions -- update from kernel-versions (main/d2023.08.23)
-- Andrea Righi <[email protected]> Wed, 06 Sep 2023 15:51:04
+0200
** Changed in: linux (Ubuntu Mantic)
Status: In Progress => Fix Released
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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:
Fix Released
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:
Fix Released
Status in linux source package in Mantic:
Fix Released
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.
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.
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