Public bug reported:
[Impact]
Connect 2 or more external monitors via type-C docking station, the dp-mst
function is working correctly. However, after unplugging the docking station,
the internal display seems to freeze for more than 5 seconds to get back with
normal display.
[Fix]
Intel release a fix to abort the DP AUX transfer on a disconnected TC port. It
prevent the DP to stuck in a unexpected long retry.
[Test]
Connect external monitors to the type-C port on the system. Make sure external
monitor display OK then unplug the dock. The internal panel should not stay in
blank for more than 10 seconds.
[Where problems could occur]
The long AUX transfer timeout and retry are meaningless on a disconnected sink.
Should be no risk for regression.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux-oem-6.1 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-6.1 (Ubuntu Jammy)
Importance: Undecided
Status: New
** Tags: civet-cat oem-priority originate-from-2007218 originate-from-2007386
** Also affects: linux-oem-6.1 (Ubuntu Jammy)
Importance: Undecided
Status: New
** Tags added: civet-cat oem-priority originate-from-2007218
** Tags added: originate-from-2007386
** Summary changed:
- The panel get blank after disconnecting dock with monitors
+ The panel get blank for too long after disconnecting dock with monitors
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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/2013114
Title:
The panel get blank for too long after disconnecting dock with
monitors
Status in HWE Next:
New
Status in linux-oem-6.1 package in Ubuntu:
New
Status in linux-oem-6.1 source package in Jammy:
New
Bug description:
[Impact]
Connect 2 or more external monitors via type-C docking station, the dp-mst
function is working correctly. However, after unplugging the docking station,
the internal display seems to freeze for more than 5 seconds to get back with
normal display.
[Fix]
Intel release a fix to abort the DP AUX transfer on a disconnected TC port.
It prevent the DP to stuck in a unexpected long retry.
[Test]
Connect external monitors to the type-C port on the system. Make sure
external monitor display OK then unplug the dock. The internal panel should not
stay in blank for more than 10 seconds.
[Where problems could occur]
The long AUX transfer timeout and retry are meaningless on a disconnected
sink. Should be no risk for regression.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2013114/+subscriptions
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