[SRU][G][HWE-5.8] Fix compatibility issue on some external monitors
Bug #1920777 reported by
AaronMa
This bug affects 2 people
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
| linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
| Groovy |
Won't Fix
|
Undecided
|
Unassigned | ||
| linux-hwe-5.8 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| Focal |
Won't Fix
|
Undecided
|
Unassigned | ||
Bug Description
[Impact]
Some external monitors got black screen via HDMI on laptops with Intel GPU.
[Fix]
Reading more of the port caps and dealing with various clock/bpc limitations.
Patchset:
https:/
[Test Case]
Verified on the target platform and other 2 laptops include workstation,
Tested on LG/ThinkVision 4k monitors and Dell 1080p monitor, include dock station.
All good.
[Where problems could occur]
Intel GPU may lose or mess the output.
| tags: | added: oem-priority originate-from-1904666 sutton |
Revision history for this message
| Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote Missing required logs. | #1 |
| Changed in linux (Ubuntu): | |
| status: | New → Incomplete |
| summary: |
- [G][HWE-5.8] Fix compatibility issue on some external monitors + [SRU][G][HWE-5.8] Fix compatibility issue on some external monitors |
| Changed in linux (Ubuntu): | |
| status: | Incomplete → In Progress |
| no longer affects: | linux-hwe-5.8 (Ubuntu Groovy) |
| no longer affects: | linux (Ubuntu Focal) |
Revision history for this message
| Launchpad Janitor (janitor) wrote | #2 |
| Changed in linux (Ubuntu Groovy): | |
| status: | New → Confirmed |
| Changed in linux-hwe-5.8 (Ubuntu Focal): | |
| status: | New → Confirmed |
| Changed in linux-hwe-5.8 (Ubuntu): | |
| status: | New → Confirmed |
Revision history for this message
| Brian Murray (brian-murray) wrote | #5 |
| Changed in linux (Ubuntu Groovy): | |
| status: | Confirmed → Won't Fix |
| Changed in hwe-next: | |
| status: | New → Fix Released |
| Changed in linux-hwe-5.8 (Ubuntu): | |
| status: | Confirmed → Invalid |
| Changed in linux (Ubuntu): | |
| status: | In Progress → Fix Released |
| Changed in linux-hwe-5.8 (Ubuntu Focal): | |
| status: | Confirmed → Won't Fix |
To post a comment you must log in.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1920777
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.