This bug was fixed in the package linux-oem-5.10 - 5.10.0-1011.12
---------------
linux-oem-5.10 (5.10.0-1011.12) focal; urgency=medium
* focal/linux-oem-5.10: 5.10.0-1011.12 -proposed tracker (LP:
#1913030)
* Support CML-S CPU + TGP PCH (LP: #1909457)
- Revert "UBUNTU: SAUCE: drm/i915/rkl: new rkl ddc map for different PCH"
- drm/i915/dg1: gmbus pin mapping
- drm/i915/dg1: Don't program PHY_MISC for PHY-C and PHY-D
- drm/i915/dg1: add hpd interrupt handling
- drm/i915/display/ehl: Limit eDP to HBR2
- drm/i915/jsl: Split EHL/JSL platform info and PCI ids
- drm/i915: Add PORT_TCn aliases to enum port
- drm/i915: s/PORT_TC/TC_PORT_/
- drm/i915/rkl: new rkl ddc map for different PCH
- SAUCE: drm/i915/gen9_bc : Add TGP PCH support
* backlight parsing for VBT 234+ (LP: #1912157)
- drm/i915/vbt: Fix backlight parsing for VBT 234+
- drm/i915/vbt: Update the version and expected size of
BDB_GENERAL_DEFINITIONS map
- drm/i915/vbt: Add VRR VBT toggle
* HD Audio Device PCI ID for the Intel Cometlake-R platform (LP: #1912427)
- SAUCE: ALSA: hda: Add Cometlake-R PCI ID
-- Timo Aaltonen <[email protected]> Mon, 25 Jan 2021
11:43:18 +0200
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: Fix Committed => Fix Released
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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
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.10 package in Ubuntu:
New
Status in linux source package in Focal:
New
Status in linux-oem-5.10 source package in Focal:
Fix Released
Status in linux source package in Hirsute:
In Progress
Status in linux-oem-5.10 source package in Hirsute:
New
Bug description:
[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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1910211/+subscriptions
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