[Bug 77892] New: [RV635] when GPU locks up, reset happens but X is unresponsive except mouse - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 77892] New: [RV635] when GPU locks up, reset happens but X is unresponsive except mouse
Date: Thu, 24 Apr 2014 13:22:43 +0000	[thread overview]
Message-ID: <bug-77892-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=77892

          Priority: medium
            Bug ID: 77892
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [RV635] when GPU locks up, reset happens but X is
                    unresponsive except mouse
          Severity: critical
    Classification: Unclassified
                OS: Linux (All)
          Reporter: shawn.starr@rogers.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

For a long time now, I don't recall which 3.x broke this but there's been many
changes since and now, when the GPU does randomly reset, the display goes
blank, X display is restored, but I can only move mouse, cannot interact with
X.

Can someone point me to some debugging approaches to see if there's some lock
being held somewhere thats causing this?

I am able to ssh into the laptop so, this seems to point to some sort of lock
thats not released.

Bisecting radeon drm will be difficult if I have to start from near the
beginning of r600g drm support.

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