Public bug reported:
[Impact]
When a Thunderbolt monitor gets plugged to an AMD laptop for second time, the
Thunderbolt monitor remains blank.
[Fix]
Reinitialize TMU and perform proper Time Synchronization Handshake every time.
[Test]
The Thunderbolt monitor still has image after many replugging.
[Where problems could occur]
This change the flow on disabling TMU, which is responsible for time
synchronization, so behavior of Thunderbolt docking might be affected. Per my
limited test no issue has been observed.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: linux-oem-6.1 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: Won't Fix
** Affects: linux-oem-6.1 (Ubuntu Jammy)
Importance: Low
Status: Confirmed
** Affects: linux (Ubuntu Lunar)
Importance: Low
Status: Confirmed
** Affects: linux-oem-6.1 (Ubuntu Lunar)
Importance: Undecided
Status: Invalid
** Also affects: linux (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.1 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.1 (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Fix Released
** Changed in: linux (Ubuntu Lunar)
Status: New => Confirmed
** Changed in: linux (Ubuntu Jammy)
Status: New => Won't Fix
** Changed in: linux (Ubuntu Lunar)
Importance: Undecided => Low
** Changed in: linux-oem-6.1 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.1 (Ubuntu Lunar)
Status: New => Invalid
** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Status: New => Confirmed
** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/2034491
Title:
Fix blank display when Thunderbolt monitor is plugged second time
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:
Confirmed
Status in linux source package in Lunar:
Confirmed
Status in linux-oem-6.1 source package in Lunar:
Invalid
Bug description:
[Impact]
When a Thunderbolt monitor gets plugged to an AMD laptop for second time, the
Thunderbolt monitor remains blank.
[Fix]
Reinitialize TMU and perform proper Time Synchronization Handshake every time.
[Test]
The Thunderbolt monitor still has image after many replugging.
[Where problems could occur]
This change the flow on disabling TMU, which is responsible for time
synchronization, so behavior of Thunderbolt docking might be affected. Per my
limited test no issue has been observed.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2034491/+subscriptions
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