Bug 89776 - [BYT]VGA monitor sporadically can't be lighted up
Summary: [BYT]VGA monitor sporadically can't be lighted up
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: medium minor
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-03-26 08:14 UTC by liulei
Modified: 2017-07-24 22:47 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (66.02 KB, text/plain)
2015-03-26 08:14 UTC, liulei 		no flags Details
View All

Description liulei 2015-03-26 08:14:40 UTC 
Created attachment 114640 [details]
dmesg

==System Environment==
--------------------------
Non-working platforms: Baytrail

==kernel==
--------------------------
-2015Q1 Release 660613d1a4e94144490850b6c3d350331860fac4 (fails)
   Linux 3.19.2
-nightly d851223f114ceee2345bc00e5fa4eee8cc6fe144(works)
   drm-intel-nightly: 2015y-03m-25d-17h-24m-21s UTC integration manifest

I can't reproduce this issue on latest -nighly. 

==Bug detailed description==
-----------------------------
VGA monitor can be recognized, but can't be lighted up. 
If i use "testdisplay -a " , monitor can be lighted up.

==Reproduce steps==
---------------------------- 
1. boot machine up
2. plug in VGA
Comment 1 Ander Conselvan de Oliveira 2015-06-02 10:04:42 UTC 
(In reply to liulei from comment #0)
> VGA monitor can be recognized, but can't be lighted up. 

What exactly do you mean by that?

Also, dmesg has no debug information. Add drm.debug=0xe to your kernel command line and attach it again.
Comment 2 xubin 2015-06-16 11:19:32 UTC 
Test 10 cycles with the latest drm-intel-nightly kernel(commit 4643c57c23dcee0ef150c580329482fb6a18ab9c)on BYT platform,VGA monitor can be light up normal.So,I think the bug could be closed.
Comment 3 Jani Nikula 2015-06-16 13:02:40 UTC 
(In reply to xubin from comment #2)
> Test 10 cycles with the latest drm-intel-nightly kernel(commit
> 4643c57c23dcee0ef150c580329482fb6a18ab9c)on BYT platform,VGA monitor can be
> light up normal.So,I think the bug could be closed.

*shrug*

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