Bug 85217

Summary: [BSW]eDP monitor no signal when edp and DP both connected
Product: DRI Reporter: wendy.wang
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: major    
Priority: medium CC: intel-gfx-bugs, yi.sun
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg log file none

Description wendy.wang 2014-10-20 05:49:56 UTC 
Created attachment 108082 [details]
dmesg log 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 DP both connected, edp monitor no signal, only DP monitor has signal

==Reproduce steps==
----------------------------
1. Boot up system with edp and DP connected
2. Observer two displays, will observe only DP monitor has signal, edp panel no signal.
Comment 1 Rodrigo Vivi 2014-10-23 14:25:19 UTC 
Hi Yi, does this log represents what you saw on yesterday's -nightly?
Otherwise, can you upload your  latest dmesg here please?
Comment 2 wendy.wang 2014-10-24 02:46:36 UTC 
Re-test the latest drm-intel-nightly branch； GNU/Linux 3.18.0-rc1_drm-intel-nightly_77683b_20141                                                                          023+ x86_64 
on BSW RVP Fab2 board with B1 silicon CPU.

edp has signal after start kernel, and DP has display in the whole boot sequence, so this bug has been fixed, the edp no signal issue before start kernel should be video bios related bug.

so close this bug from i915 driver aspect.
Comment 3 Elizabeth 2017-10-06 14:34:40 UTC 
Closing old verified.

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