Bug 102310

Summary: GPU HANG: ecode 4:2:0x00000000, reason: Hang on bsd ring, action: reset
Product: DRI Reporter: michel.munnix
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: intel-gfx-bugs
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg
none
/sys/class/drm/card0/error
none
dmesg with "drm.debug=0x1e log_buf_len=1M"
none
/sys/class/drm/card0/error when started with debug flags none

Description michel.munnix 2017-08-19 21:06:24 UTC
Created attachment 133631 [details]
dmesg

kernel: 4.4.79-19-default
distribution: opensuse 42.3
reproducible: every time
when starting graphics session as normal user as well as root user
no mouse pointer, keyboard unresponsive

error in dmesg
Comment 1 michel.munnix 2017-08-19 21:07:49 UTC
Created attachment 133632 [details]
/sys/class/drm/card0/error
Comment 2 michel.munnix 2017-08-19 21:32:13 UTC
Created attachment 133633 [details]
dmesg with "drm.debug=0x1e log_buf_len=1M"

with debug flags, screen, mouse and keyboard are usable
temporary artefacts during session setup
after that, cursor is in top left corner of a black square moving with the cursor
Comment 3 michel.munnix 2017-08-19 21:33:10 UTC
Created attachment 133634 [details]
/sys/class/drm/card0/error when started with debug flags
Comment 4 Chris Wilson 2017-08-21 11:41:59 UTC
Good new, bad news. It was fixed circa v4.6 or v4.9 with the request/context overhaul, but I can't remember the precise fix anymore.

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