Bug 85216 - [BSW]eDP monitor no signal before starting kernel when edp and HDMI both connected
Summary: [BSW]eDP monitor no signal before starting kernel when edp and HDMI both conn...
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium major
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-10-20 05:45 UTC by wendy.wang
Modified: 2017-10-06 14:34 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg file (105.81 KB, text/plain)
2014-10-20 05:45 UTC, wendy.wang 		no flags Details
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Description wendy.wang 2014-10-20 05:45:29 UTC 
Created attachment 108081 [details]
dmesg file

==System Environment==
--------------------------
Regression: No

Non-working platforms: BSW RVP FAB2 which done R10 rework

This is not regression, this issue happened after one bug fix:( 84265 - [BSW Bisected]System fails to find eDP monitor), which merged up Ville's patch: 

commit e17ac6db2ef99388b750b2141c11974dc5742913
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Thu Oct 9 19:37:15 2014 +0300

    drm/i915: Don't trust the DP_DETECT bit for eDP ports on CHV
 

==kernel==
--------------------------
origin/drm-intel-nightly: 8d1dbeed28a28ecf964769bf089503f0c90ffdaa(fails)
commit 8d1dbeed28a28ecf964769bf089503f0c90ffdaa
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sun Oct 19 16:54:55 2014 +0200

    drm-intel-nightly: 2014y-10m-19d-14h-54m-38s UTC integration manifest

==Bug detailed description==
Boot up BSW with edp and HDMI both connected, edp monitor no signal, only HDMI has signal before "start kernel" phase; after "start kernel" phase, both edp and HDMI have signal output.

==Reproduce steps==
----------------------------
1. Boot up system with edp and HDMI connected
2. Observer two monitor display, will observe only HDMI has signal output in BIOS post and load kernel phase, after "start kernel" edp will has signal.
Comment 1 Rodrigo Vivi 2014-10-23 14:22:43 UTC 
By latest Yi test this has been fixed on latest -nightly. So I'm closing here for now. Please reopen if needed.
Comment 2 Yi Sun 2014-10-24 01:12:59 UTC 
Actually, it likely not i915 issue if it just "only HDMI has signal output in BIOS post and load kernel phase".
So the title is not such suitable description, close it now. Any other issue we can file new bug.
Comment 3 Elizabeth 2017-10-06 14:34:42 UTC 
Closing old verified.

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