Baytrail-I got black screen with HDMI output
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Phidias | ||
Xenial |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
This issue happens with 4.0+ kernels. Bisecting shows following commit cause the issue:
commit d2182a660808d90
Author: Ville Syrjälä <email address hidden>
Date: Fri Jan 9 14:21:14 2015 +0200
drm/i915: Don't register HDMI connectors for eDP ports on VLV/CHV
The issue has been reported to upstream [1] and the fix has been merged.
Although the commit fff7660 fixes the issue, it still misses to probe HDMI port in some circumstance, therefore there's another commit (already merged):
commit a5aac5ab876ad95
Author: Ville Syrjälä <email address hidden>
CommitDate: Fri Jun 10 10:40:54 2016 +0300
drm/i915: Check VBT for port presence in addition to the strap on VLV/CHV
summary: |
- Baytrail-T got black screen with HDMI output + Baytrail-I got black screen with HDMI output |
tags: | added: originate-from-1578953 pre-certification |
description: | updated |
Changed in linux (Ubuntu Xenial): | |
status: | New → Fix Committed |
tags: |
added: verification-done-xenial removed: verification-needed-xenial |
Changed in hwe-next: | |
status: | New → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1599379
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.