Bug#444223: xserver-xorg-video-ati: RS480 (radeon express X200G series): display goes to sleep after upgrade to latest unstable/sid

[Alex Deucher]

On Dec 27, 2007 6:20 PM, Junichi Uekawa <dancer at netfort.gr.jp> wrote:
> Hi,
>
> > > The minimal configuration option I needed to add was 'ConnectorTable'.
> > >
> >
> > What happens if you don't pass this option? Do you have the
> > corresponding log?
> >
> > Note that even if 6.7.197 is in unstable now, I try to keep uploading
> > newer upstream snapshots into experimental once a week or so (there are
> > still of lots of improvements being made by the devs).
> >
> > > (II) RADEON(0): Output DVI-0 using initial mode 1280x768
> > >
> > > which I don't quite understand why.
> >
> > What monitor(s) do you have attached to which output(s)? What does
> > xrandr report? It could just be that your monitor report this 1280x768
> > as a preferred mode.
>
> This was fixed when I booted my machine this morning.  I guess this
> was interim problem due to me doing partial upgrades; after a full
> dist-upgrade problem doesn't seem to happen.
>
>
> $ xrandr
> Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1600 x 1200
> DVI-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
>    1024x768       60.0 +   60.0
>    1600x1200      59.9
>    1400x1050      60.0
>    1280x1024      59.9*
>    800x600        60.3     56.2
>    640x480        60.0
> VGA-0 unknown connection (normal left inverted right x axis y axis)
>    1280x800       60.0
>    1280x768       60.0
>    1024x768       60.0
>    800x600        60.3
>    640x480        59.9
>
>

That looks more reasonable.

>
> My monitor is connected to DVI-0, and a projector (which is currently
> turned off) is connected to VGA-0.
>
>
> The remaining problem was that with GDM I can see the display, but
> after logging into GNOME when ConnectorCable is not set, display goes
> blank; and I think I now understand why.
>
> I extract the most interesting part of the log.  My theory is that the
> GNOME session tries to reconfigure xrandr such that it outputs to Port
> 0, which is 'DVI-0' when ConnectorCable is set, and 'VGA-0' when it's
> not set, and because xrandr doesn't quite know when VGA-0 is connected
> or not, GNOME is able to set VGA-0 as the only output.
>
> Not quite sure if this is fixable.
>

gnome session seems to save arbitrary xrandr setups and I'm not sure
how or when it does it.  I think there is a file you can delete that
will leave the xserver as configured at start up.  Perhaps Brice
knows?

Alex