From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 47481] New: Random blank screen: radeon_cs_ib_chunk Failed to
	schedule IB on AMD PALM
Date: Thu, 13 Sep 2012 17:15:27 +0000 (UTC)
Message-ID: <bug-47481-2300@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=47481

           Summary: Random blank screen: radeon_cs_ib_chunk Failed to
                    schedule IB on AMD PALM
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.5.3, 3.6.0-rc5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: anisse@astier.eu
        Regression: No


Created an attachment (id=80131)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=80131)
Dmesg of the problem

Hi,

Randomly I might get a bug on an AMD E1-1200 : screen won't turn on and when X
is supposed to start I get a lot of these:
[  307.718332] radeon 0000:00:01.0: couldn't schedule ib
[  307.718348] [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB !
[  307.719063] radeon 0000:00:01.0: couldn't schedule ib
[  307.719075] [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB !
[  307.734461] radeon 0000:00:01.0: couldn't schedule ib
[  307.734476] [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB !
[  307.735489] radeon 0000:00:01.0: couldn't schedule ib
[  307.735502] [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB !

They stop once X is stopped.

Full dmesg in attachment.

Extract of my xorg.conf:
Section "Device"
        Identifier  "Card0
        Driver      "radeon"
        Option  "DRI"
EndSection

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