Public bug reported:
[Impact]
When the external monitor is connected to the WD25 dock, the external monitor
shows black screen, move the cursor, screen flickers.
[Fix]
The commit in v6.19-rc1 fixes the issue
e109f644b871d drm/i915/dp_mst: Disable Panel Replay
To fix the conflict, cherry picked this commit from v6.18-rc1, too
9cc10041e9fe7 drm/i915/psr: Check drm_dp_dpcd_read return value on PSR dpcd init
[Test]
1. Boot to OS, Connect WD25 Dock and plug a DP/HDMI/MFDP monitor.
2. Check external monitor states
[Where problems could occur]
The drm_dp_dpcd_read() doesn't affect the call path, and disable dp_mst panel
replay is reasonable. Both commits look pretty safe to me.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem-6.17 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Noble)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-6.17 (Ubuntu Noble)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux (Ubuntu Questing)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem-6.17 (Ubuntu Questing)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Resolute)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem-6.17 (Ubuntu Resolute)
Importance: Undecided
Status: Invalid
** Also affects: linux-oem-6.17 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Resolute)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Noble)
Status: New => Invalid
** Changed in: linux (Ubuntu Questing)
Status: New => In Progress
** Changed in: linux (Ubuntu Resolute)
Status: New => In Progress
** Changed in: linux (Ubuntu Questing)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux (Ubuntu Resolute)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux-oem-6.17 (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-oem-6.17 (Ubuntu Noble)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux-oem-6.17 (Ubuntu Questing)
Status: New => Invalid
** Changed in: linux-oem-6.17 (Ubuntu Resolute)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2136979
Title:
Intel,External monitor flickers or no output when connected to WD25
dock
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