** Description changed:
[Impact]
+ After Apply the patches from
https://www.spinics.net/lists/intel-gfx/msg248700.html, the TGL platform would
have the failure rate(1/20) on outputting the video through WD19TB.
[Fix]
-
+ The patch is provided by
Imre(https://gitlab.freedesktop.org/drm/intel/-/issues/2801#note_740352).
+ If there's no lttpr in the link chain, the DRM driver wouldn't configure the
transparent mode again.
[Test Case]
-
+ 1. Connected the WD19TB with the TGL platform and
+ connected the external monitor on WD19TB with HDMI/Displayport.
+ 2. Don't plug the external monitor on the TGL platform, so there's only one
monitor on WD19TB.
+ 3. Cold boot the TGL platform.
+ 4. Check the monitor can be blinked and the video can output to the monitor.
[Where problems could occur]
+ As per Imre's comment, this may be caused by the dock.
+ In the future if the WD19TB's firmware is updated, we may encounter the same
issue again.
** Package changed: linux (Ubuntu) => linux-oem-5.10 (Ubuntu)
** Also affects: linux-oem-5.10 (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux-oem-5.10 (Ubuntu Hirsute)
Importance: Undecided
Status: Incomplete
** Changed in: linux-oem-5.10 (Ubuntu Hirsute)
Status: Incomplete => New
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Assignee: (unassigned) => koba (kobako)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Hirsute)
Status: New => In Progress
** Changed in: linux (Ubuntu Hirsute)
Assignee: (unassigned) => koba (kobako)
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https://bugs.launchpad.net/bugs/1910211
Title:
Fix the video can't output through WD19TB connected with TGL platform
during cold-boot
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