[Bug 29455] New: Nouveau TV-out incorrectly detecting load on NV18

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29455

           Summary: Nouveau TV-out incorrectly detecting load on NV18
           Product: xorg
           Version: 7.5
          Platform: PowerPC
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: rechner-dLI15PoULosb1SvskN2V4Q@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Nouveau is detecting and enabling TV-out, even though nothing is plugged in to
it.

This causes the non-X terminals to only offer reduced resolution in the upper
left corner of the display, and also has a few implications for X. Overall my
problem seems very similar to bug #26800 .

I'm afraid I can't help much in solving this problem, for my knowledge of
kernel internals is close to non-existent, and anyway PowerPC is not supported
by the Nvidia binary driver.

I don't care much about the non-X terminals' resolution, but there is one
annoying problem in X: Firefox (or Iceweasel in Debian) only expands its
bookmarks menu within the small area in the upper left corner of the screen.
Also the background in GDM and Gnome is show in reduced resolution in that
corner, in addition to a full screen version.

I can get rid of the problems in X by calling "xrandr --output TV-1 --off". A
permanent fix is the following simple /etc/X11/xorg.conf:

Section "Monitor" 
       Identifier      "TV-1"
       Option          "Ignore" "True" 
EndSection 

The problem occurs with Ubuntu 10.04 (Kernel 2.6.33, nouveau
0.15+git20100219+9b4118d-0ubuntu5) and with Debian sid (Kernel 2.6.35, nouveau
0.16+git20100518+4b8f1a0-1).

I keep getting messages like this in the Kernel log:

[ 6399.294705] [drm] nouveau 0000:00:10.0: Output TV-1 is running on CRTC 1
using output B
[ 6399.498411] [drm] nouveau 0000:00:10.0: Load detected on output B
[ 6399.730419] [drm] nouveau 0000:00:10.0: Load detected on output B
[ 6399.934411] [drm] nouveau 0000:00:10.0: Load detected on output B
[ 6400.126411] [drm] nouveau 0000:00:10.0: Load detected on output B

(from Debian)

[  124.508970] [drm] nouveau 0000:00:10.0: Load detected on output B
[  150.448932] [drm] nouveau 0000:00:10.0: Load detected on output B
[  232.721150] [drm] nouveau 0000:00:10.0: Load detected on output B
[  232.727489] [drm] nouveau 0000:00:10.0: Setting dpms mode 3 on TV encoder
(output 2)
[  243.165175] [drm] nouveau 0000:00:10.0: Load detected on output B

(from Ubuntu)

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