[SRU] External HDMI monitor failed to show screen on Lenovo X1 series
Bug #1738523 reported by
AaronMa
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
High
|
AaronMa | ||
linux (Ubuntu) |
Fix Released
|
Medium
|
AaronMa | ||
Xenial |
Invalid
|
Undecided
|
Unassigned | ||
Artful |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Xenial |
Fix Released
|
Undecided
|
Unassigned | ||
Artful |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Thinkpad X1 yoga:
CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (family: 0x6, model: 0x8e, stepping: 0xa)
GPU: Intel Corporation Device [8086:5917] (rev 07) (prog-if 00 [VGA controller])
Steps:
1, Connect an external monitor
2, Try to switch display modes in mirrored, extended, displayed on external or internal.
[Impact]
External HDMI monitor failed to show screen on Lenovo X1 yoga/carbon
[Fix]
Add a workaround to bypass this TMDS_OE writing on identified laptop models.
[Test Case]
Tested on ThinkPad X1 yoga 2nd/3rd and Carbon 6th, external HDMI output
OK.
[Regression Potential]
Low, it limits to ThinkPad specific laptops.
tags: | added: originate-from-1725109 sutton |
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Triaged |
importance: | Undecided → Medium |
Changed in hwe-next: | |
importance: | Undecided → High |
assignee: | nobody → AaronMa (mapengyu) |
Changed in linux (Ubuntu): | |
assignee: | nobody → AaronMa (mapengyu) |
Changed in linux (Ubuntu): | |
status: | Triaged → Fix Committed |
Changed in linux-oem (Ubuntu Xenial): | |
status: | New → Fix Committed |
Changed in linux-oem (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu Xenial): | |
status: | New → Invalid |
Changed in linux-oem (Ubuntu Artful): | |
status: | New → Invalid |
Changed in linux (Ubuntu Artful): | |
status: | New → Fix Committed |
summary: |
- External HDMI monitor failed to show screen on Lenovo X1 series + [SRU] External HDMI monitor failed to show screen on Lenovo X1 series |
tags: |
added: verification-done-artful removed: verification-needed-artful |
Changed in hwe-next: | |
status: | New → Fix Committed |
Changed in hwe-next: | |
status: | Fix Committed → Fix Released |
tags: | added: cscc |
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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 1738523
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.