[Bug 110628] New: [gen3] [drm] GPU HANG: ecode 3:1:0x00000000, in Xorg [991], hang on rcs0.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110628

            Bug ID: 110628
           Summary: [gen3] [drm] GPU HANG: ecode 3:1:0x00000000, in Xorg
                    [991], hang on rcs0.
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: galkin-vv at ya.ru
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 144176
  --> https://bugs.freedesktop.org/attachment.cgi?id=144176&action=edit
/sys/class/drm/card0/error (with dump!), Xorg log and dmesg with drm.debug=0x1e

Every several weeks I'm getting GPU hang in kernel log.
>i915 0000:00:02.0: GPU HANG: ecode 3:1:0x00000000, in Xorg [991], hang on rcs0
>...
>i915 0000:00:02.0: Resetting chip for hang on rcs0
(see attached archive for more messages)


The last time it eventually generated a non-empty dump in
/sys/class/drm/card0/error

The hang typically reproduces at night (when office machine is not at use) and
in the morning all apps continues working fine. There is no visual effect so
the severity isn't high.

There were previous hang messages in bug #109047 but hangs were a bit
different, and error file was lacking the real dump, so I'm closing that bug
and opening new one - now with actual (base64(?)) dump in error file.

System environment:
-- chipset: i945g (82945G/GZ Integrated Graphics Controller 8086:2772)
-- system architecture: 64-bit
-- Linux distribution:Debian buster
-- xf86-video-intel: 2:2.99.917+git20180925-2
-- xserver:2:1.20.3-1
-- mesa:18.3.4-2
-- libdrm:2.4.95-1
-- kernel:5.1-rc1-based drm-tip 2019y-03m-18d-22h-01m-31s UTC integration
manifest
-- Mobo model:DMI: Gigabyte Technology Co., Ltd. GC330UD, BIOS F2 03/17/2009
-- Display connector:d-sub

The exact kernel is ubuntu drm-tip binaries from
https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/2019-03-19/

Source:
https://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack/commit/?id=7f60fa0e

drm-tip: 2019y-03m-18d-22h-01m-31s UTC integration manifest
commit 7f60fa0e

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