[Bug 99325] New: [i915] GPU hang in plasma shell, reason: Hang on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99325

            Bug ID: 99325
           Summary: [i915] GPU hang in plasma shell, reason: Hang on
                    render ring
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: rainbert at posteo.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 128819
  --> https://bugs.freedesktop.org/attachment.cgi?id=128819&action=edit
error state batch buffer

For half a year I have been experiencing regular GPU hangs in my arch linux
KDE4/Plasma installation on a Lenovo Thinkpad X1 Carbon 4th generation (2016). 

It *only* happens when I am using libreoffice word processing software: While
typing text, the computer would spontaneously freeze for 10-20 secs, input is
interrupted but I can move the mouse, then a notification appears in the system
tray reading 
"KWin Window Manager 
Desktop effects were restarted due to graphics reset.", 
and then I can continue working. 

(The notification is similar to this message: https://i.imgur.com/DSgAQBZ.png ) 

The hang occurs regularly every 2-5 minutes but only while using libreoffice. 

Sometimes, about 1 in 10 cases, the mouse pointer freezes as well and the
X-Server would crash after 10-20 seconds instead of recovering. 

The bug has been persistent through diverse system updates I did during the
last half year. 


File with GPU error state attached. 

Do you need additional information? 
Thanks a lot.

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