Fix Disable thunderbolt clx make edp-monitor garbage while moving the touchpad
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Committed
|
Undecided
|
koba | ||
Jammy |
In Progress
|
Medium
|
koba | ||
Kinetic |
Won't Fix
|
Medium
|
koba | ||
Lunar |
Fix Released
|
Medium
|
koba | ||
Mantic |
Won't Fix
|
Undecided
|
koba | ||
linux-oem-6.1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Undecided
|
koba | ||
Kinetic |
Invalid
|
Undecided
|
Unassigned | ||
Lunar |
Invalid
|
Undecided
|
Unassigned | ||
Mantic |
Invalid
|
Undecided
|
Unassigned |
Bug Description
[impact]
The default sync pulse length for fast wake AUX transactions was changed from 18 to 10, which was causing issues with some eDP panels.
[fix]
Revert the sync pulse length for fast wake AUX transactions back to the hardware default of 18 (10 precharge + 8 preamble).
[test cases]
1. configure with thunderbolt.clx=0.
2. check edp's behavior and it should work well and there's no garbage.
[where the issue could happen]
low, By reverting this setting back to the default, this commit restores stability for configurations using fast wake AUX transactions, especially those involving eDP panels that were incompatible with the shorter sync pulse length. The longer, hardware-default sync pulse length is compatible with more use cases.
Changed in linux (Ubuntu Kinetic): | |
assignee: | nobody → koba (kobako) |
status: | New → In Progress |
Changed in linux (Ubuntu Jammy): | |
assignee: | nobody → koba (kobako) |
status: | New → In Progress |
Changed in linux (Ubuntu Lunar): | |
assignee: | nobody → koba (kobako) |
status: | New → In Progress |
Changed in linux (Ubuntu Mantic): | |
assignee: | nobody → koba (kobako) |
status: | New → In Progress |
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
assignee: | nobody → koba (kobako) |
status: | New → In Progress |
description: | updated |
description: | updated |
tags: | added: oem-priority originate-from-2022359 somerville |
Changed in linux (Ubuntu Lunar): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Kinetic): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Jammy): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Lunar): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Mantic): | |
status: | In Progress → Fix Committed |
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
Changed in linux-oem-6.1 (Ubuntu Kinetic): | |
status: | New → Invalid |
Changed in linux-oem-6.1 (Ubuntu Lunar): | |
status: | New → Invalid |
Changed in linux-oem-6.1 (Ubuntu Mantic): | |
status: | New → Invalid |
This bug is awaiting verification that the linux-oem- 6.1/6.1. 0-1015. 15 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- jammy' to 'verification- done-jammy' . If the problem still exists, change the tag 'verification- needed- jammy' to 'verification- failed- jammy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!