Bug 94580

Summary: i915 Display manager screen frozen with cursor moving, remote ssh possible.
Product: DRI Reporter: Bartłomiej Żogała <freedesktop>
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: normal    
Priority: medium CC: anamtsov, intel-gfx-bugs
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: SKL i915 features: display/Other
Attachments:
Description Flags
Intelreg dump none

Description Bartłomiej Żogała 2016-03-16 23:03:30 UTC 
Created attachment 122360 [details]
Intelreg dump

It happens mostly while tampering with window - to reproduce I open chromium-browser with ~30 tabs, then enter/exit full screen few times on YouTube(HTML5) wideo. On drm-intel-nightly it happens even faster - often while starting the browser or opening any window.
Started debugging with Ubuntu 4.2 kernel, then Ubuntu mainline 4.5 kernel, then drm-intel-nightly. 

Issuing:
echo 1 > /sys/devices/pci0000:00/0000:00:02.0/rom
cat /sys/devices/pci0000:00/0000:00:02.0/rom > vbios.dump

gives input/output error at second step

cat /sys/class/drm/card0/error
no error state collected

Intel reg dump attached.

Above are relevant to drm-intel-nightly as requested , but stacktrace present in launchpadbug from ubuntu 4.2 kernel may also be relevant:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1545320
Comment 1 Bartłomiej Żogała 2016-03-20 23:23:45 UTC 
Do you need any further info or help with debuging new kernel?
Comment 2 Jari Tahvanainen 2017-03-08 09:27:46 UTC 
Zogala - I'm really sorry about this long time until getting back to you. Do you still have this problem with the latest kernel(s), preferable generated from drm-tip? And with the new data please provide also full dmesg (add drm.debug=0x1e log_buf_len=1M to your kernel command line).
Comment 3 Jari Tahvanainen 2017-04-10 11:30:19 UTC 
Timeout - assuming resolved+fixed. If problem still persists with the latest kernels (preferable drm-tip from git://anongit.freedesktop.org/git/drm-tip), please reopen this with the latest data as attachments (see https://01.org/linuxgraphics/documentation/how-report-bugs).

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