Bug 74962 - [BYT Regression]Unable to work on two pipes(DP and HDMI)
Summary: [BYT Regression]Unable to work on two pipes(DP and HDMI)
Status: CLOSED DUPLICATE of bug 75246
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: high major
Assignee: Paulo Zanoni
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-02-14 05:32 UTC by Guo Jinxian
Modified: 2016-10-07 10:14 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (62.80 KB, text/plain)
2014-02-14 05:32 UTC, Guo Jinxian 		no flags Details
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Description Guo Jinxian 2014-02-14 05:32:14 UTC 
Created attachment 94041 [details]
dmesg

Environment:
--------------------------
Platform: BayTrail
Kernel: (drm-intel-nightly) 64fcdb139972db2663469d8799968260fb43a26d


Bug detailed description:
-----------------------------
The device unable to work on two pipes mode. DP and HDMI unable to work at the same time.

It works well on -testing(54b927ca040f2adee35f9ee95c9ce40d6be2f0e8)

Steps:
---------------------------
1. Boot OS only with DP
2. Hot-plug HDMI cable, the monitor will show "HDMI NO SIGNAL"
3. If unplug DP, HDMI works normally
4. Reboot OS only with HDMI
5. Hot-plug DP cable, the monitor will show "DP NO SIGNAL"
6. If unplug HDMI, DP workd normally
Comment 1 Jani Nikula 2014-02-14 08:25:57 UTC 
(In reply to comment #0)
> Created attachment 94041 [details]
> dmesg

No drm.debug=0xe module parameter in the dmesg. Please reproduce with that.

There's 

[  155.953639] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 192

in the logs, might explain things, but we have no details now.

> Kernel: (drm-intel-nightly) 64fcdb139972db2663469d8799968260fb43a26d
...
> It works well on -testing(54b927ca040f2adee35f9ee95c9ce40d6be2f0e8)

Could you bisect this please?
Comment 2 Guo Jinxian 2014-02-14 08:44:44 UTC 
-nightly 64fcdb139972db2663469d8799968260fb43a26d  failed
-next-queued b6ae3c7c60161a9b1e15b1ccd6412fad65b7d9cf failed
-testing 54b927ca040f2adee35f9ee95c9ce40d6be2f0e8 passed

I well bisect it next week. thanks
Comment 3 Guo Jinxian 2014-02-18 08:48:21 UTC 
Two pipes can work well with the latest –nightly of Daniel’s old tree, but failed with latest –nightly on the new tree. Duo to the code changing and missed commit, QA hard to find a good commit to bisect.

BTW, Latest -fixes(f51a44b9a6c4982cc25bfb3727de9bb893621ebc) is passed.
Comment 4 Jesse Barnes 2014-02-20 20:43:00 UTC 
Do both displays light up with testdisplay or X?  If so, this might be a dupe of #75246.
Comment 5 Guo Jinxian 2014-02-24 08:02:16 UTC 
(In reply to comment #4)
> Do both displays light up with testdisplay or X?  If so, this might be a
> dupe of #75246.

Yes, displays is able to light up with testdisplay or X, it might be the same issue with #75246
Comment 6 Chris Wilson 2014-02-24 08:31:24 UTC 

*** This bug has been marked as a duplicate of bug 75246 ***
Comment 7 Jari Tahvanainen 2016-10-07 10:14:24 UTC 
Closing verified as duplicate of closed+verified.

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