** Also affects: linux-oem-6.5 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem-6.5 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Status: New => Fix Released
** Changed in: linux-oem-6.5 (Ubuntu Lunar)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2034491
Title:
Fix blank display when Thunderbolt monitor is plugged second time
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-oem-6.5 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-oem-6.5 source package in Jammy:
Fix Released
Status in linux source package in Lunar:
Fix Released
Status in linux-oem-6.1 source package in Lunar:
Invalid
Status in linux-oem-6.5 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.
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