[Bug 34972] New: [nouveau] Screen blinking on dualhead

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34972

           Summary: [nouveau] Screen blinking on dualhead
           Product: DRI
           Version: XOrg CVS
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/other
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: mad.f3ka at gmail.com


Sometimes screen blinks to black and returns to normal on both two monitors.

dmesg says:
[drm] nouveau 0000:06:00.0: Allocating FIFO number 4
[drm] nouveau 0000:06:00.0: nouveau_channel_alloc: initialised FIFO 4
[drm] nouveau 0000:06:00.0: nouveau_channel_free: freeing fifo 4
[drm] nouveau 0000:06:00.0: DDC responded, but no EDID for VGA-1
[drm] nouveau 0000:06:00.0: Load detected on output A
[drm] nouveau 0000:06:00.0: DDC responded, but no EDID for DVI-I-1
[drm] nouveau 0000:06:00.0: Load detected on output C
[drm] nouveau 0000:06:00.0: DDC responded, but no EDID for VGA-1
[drm] nouveau 0000:06:00.0: Load detected on output A

Software versions:
kernel 2.6.37.2
libdrm 2.4.23
mesa 7.10.1
xf86-video-nouveau 0.0.16_git20101217-1

Hardware:
06:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600] (rev
a2)

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