[WD19TB] external DP failed with DRM error message
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Hsuan-Yu Lin | ||
Focal |
Invalid
|
Undecided
|
Unassigned | ||
Groovy |
Fix Released
|
Undecided
|
Hsuan-Yu Lin | ||
linux-oem-5.6 (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Undecided
|
Hsuan-Yu Lin |
Bug Description
[SRU Justfication]
TGL platform can't output external monitor on WD19TB docking.
There's no screen on the external monitor.
error in dmesg:
[drm:intel_
[Fix]
According to Intel's suggestion,
we need this: https:/
Also for dependency, the following patches are landed in drm-tip
and necessary for support TGL platform:
* commit f4ece33f51d8 ("drm/i915/tgl+: Fix TBT DPLL fractional divider for 38.4MHz ref clock")
* commit a6e96d6948c8 ("drm/i915/tgl+: Use the correct DP_TP_* register instances in MST encoders")
* commit f822a79734e1 ("drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed")
* commit 1a7e82efaa8a ("drm/i915/tgl: Add HBR and HBR2+ voltage swing table")
* commit 80907edcc6ed ("UBUNTU: SAUCE: drm/i915/bios: add intel_bios_
* commit 6df896896c8d ("drm/i915/tgl: Implement WA_16011163337")
* commit cb730fe971f0 ("drm/i915/tgl: Update TC DP vswing table")
[Test]
The WD19TB can output HDMI/DP to external monitor.
[Regression Potential]
Medium, in order to support TGL platform, we also include two patches:
drm/i915/bios: add intel_bios_
drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed
The two patches are not related to TGL, but for dependency.
CVE References
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | New → Confirmed |
Changed in linux-oem-5.6 (Ubuntu): | |
status: | New → Invalid |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
assignee: | nobody → Hsuan-Yu Lin (shanelin) |
Changed in linux-oem-5.6 (Ubuntu): | |
assignee: | Hsuan-Yu Lin (shanelin) → nobody |
tags: | added: oem-priority originate-from-1885519 somerville |
description: | updated |
tags: | added: focal |
description: | updated |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | In Progress → Fix Committed |
Changed in linux-oem-5.6 (Ubuntu): | |
status: | Invalid → Fix Released |
Changed in linux (Ubuntu Focal): | |
status: | New → Invalid |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
status: | Confirmed → In Progress |
assignee: | nobody → Hsuan-Yu Lin (shanelin) |
no longer affects: | linux-oem-5.6 (Ubuntu Groovy) |
Changed in hwe-next: | |
status: | New → Fix Released |
https:/ /lists. ubuntu. com/archives/ kernel- team/2020- July/111754. html