Bug 96586

Summary: White whole screen flash on high load
Product: DRI Reporter: Tatsuyuki Ishi <ishitatsuyuki>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED WORKSFORME QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: SKL i915 features:
Attachments:
Description Flags
The log with the debug options. none

Description Tatsuyuki Ishi 2016-06-19 06:24:11 UTC 
Device: ThinkPad X1 Yoga with i7-6500U

Situation: the screen flash to white on high game loads. The game confirmed to trigger the bug is Minecraft (others not tested).

Step to reproduce:
Play Minecraft with maximum FPS set over 60 (or VSync) and full screen. The screen flashes frequently.
There is no problem if I limit it to 50. Sounds like a overrun for me.
I haven't try window mode.

It doesn't occur for normal use. Chrome has no problem.

No errors are reported in dmesg. OS is Arch Linux.
Comment 1 Jani Nikula 2016-06-20 09:30:15 UTC 
Please add drm.debug=0x1e module parameter and attach dmesg from boot. You may need to use log_buf_len=4M or bigger to capture everything. Let's see if there's anything there.
Comment 2 Tatsuyuki Ishi 2016-06-21 09:37:38 UTC 
Created attachment 124636 [details]
The log with the debug options.

I have took a log. Please take a look.
Comment 3 Ricardo 2017-02-21 16:38:16 UTC 
log included, removing needinfo status
Comment 4 Jari Tahvanainen 2017-04-11 07:08:45 UTC 
Sorry Tatsuyuki for this delay until getting on back to you and on this. Due to this delay and since there have been quite a lot code fixes on this area submitted lately, I would appreciate a lot if you can retest this with the latest kernel (preferable drm-tip fromgit://anongit.freedesktop.org/git/drm-tip). If problem still exist then change status to REOPENED and attach dmesg from both working and non-working cases.
Comment 5 Jari Tahvanainen 2017-05-23 13:27:40 UTC 
Timeout - marking resolved+worksforme. Please reopen the bug if problem still persist with the latest kernels (preferable from drm-tip).

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