[Bug 29372] New: KMS - radeon (Uhhuh. NMI received for unknown reason)

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=29372

           Summary: KMS - radeon (Uhhuh. NMI received for unknown reason)
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.37.x
          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: tomasi@cli.di.unipi.it
                CC: alexdeucher@gmail.com
        Regression: No


I noticed that when I run:
  xset dpms force standby
or
  echo "low" > /sys/class/drm/card0/device/power_profile
for my ATI Radeon Mobile X1400 (I think r5xx) I receive this advise from
kernel:
---
  Uhhuh. NMI received for unknown reason a1 on CPU 0.
  You have some hardware problem, likely on the PCI bus.
  Dazed and confused, but trying to continue
---
or something like. With latest commit on master branch of xf86-video-ati:
   http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/
my PC go on freeze after some stanby. Now I'm using the xf86-video-ati at
latest commit at 2011-02-15 16:24:23 (4d7e1498f7d9eb50e2eddabca193fc27bde24f0e)

Best regards,
Emanuele

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