Bug 89770 - [BYT] The screen can not display stable when run testdisplay for second time
Summary: [BYT] The screen can not display stable when run testdisplay for second time
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-03-26 02:38 UTC by xubin
Modified: 2017-10-06 14:30 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (51.43 KB, text/plain)
2015-03-26 02:38 UTC, xubin 		no flags Details
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Description xubin 2015-03-26 02:38:47 UTC 
Created attachment 114630 [details]
dmesg

==System Environment==
--------------------------
Regression: No. I can not find a proper commit.

Non-working platforms: Baytrail.

==kernel==
--------------------------
-nightly: 877605d94cb0260cb05a110b8a1ec3871a8477ea (fails)
    drm-intel-nightly: 2015y-03m-24d-09h-19m-43s UTC integration manifest
-queued: 096fad9ebfadb4922332f98895ea948e8d7fe6a7 (fails)
    drm/i915: move clearing of RPS interrupt bits from disable to reset time  
-fixes: bc465aa9d045feb0e13b4a8f32cc33c1943f62d6 (fails)
    Linux 4.0-rc5

==Bug detailed description==
Run the command "testdisplay" for second time,the screen can not display normally on below resolution.

1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 0x15 0x40 74250
1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74176

==Reproduce steps==
1 set monitor to above resolution(./testdisplay -o HDMIconnectorId,modes)
  screen shows the normally pic. 
3 set monitor to above resolution,again(./testdisplay -o HDMIconnectorId,modes)
  screen shows the wrong pic.
Comment 1 xubin 2015-03-26 02:43:42 UTC 
I'll add the URL of the wrong-phenomenon video latter.
Comment 2 Ander Conselvan de Oliveira 2015-06-02 09:51:47 UTC 
(In reply to xubin from comment #1)
> I'll add the URL of the wrong-phenomenon video latter.

Please do. Also, dmesg has no debug information.
Comment 3 xubin 2015-06-17 06:21:06 UTC 
Test with latest drm-intel-nightly kernel (commit 4643c57c23dcee0ef150c580329482fb6a18ab9c) 5 cycles on BYT platform,screen show stale,so verified.
Comment 4 Elizabeth 2017-10-06 14:30:49 UTC 
Closing old verified.

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