[radeon] Dual-Head, second display stays black

[Andreas Juch]

Am Tue, 28 Apr 2009 13:46:08 -0400
schrieb Alex Deucher <alexdeucher at gmail.com>:

> On Mon, Apr 27, 2009 at 9:56 PM, Andreas Juch <xorg at juch.cc> wrote:
> > Hi!
> >
> > I have a Xserver 1.6.1 and the radeon release 6.12.2 here. I have
> > two screens connected to the two DVI outputs of a RHD 3470 card.
> > The 22" display works fine, the 17" display stays black (monitor's
> > OSD says "no signal found"). According to xrandr everything
> > _should_ be fine:
> >
> > Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 2960 x
> > 1050 DVI-1 connected 1280x1024+1680+0 (normal left inverted right x
> > axis y axis) 338mm x 270mm 1280x1024      60.0*+   75.0     72.0
> >   60.0* 1152x864       75.0
> >   1024x768       75.0     70.1     60.0
> >   832x624        74.6
> >   800x600        72.2     75.0     60.3
> >   640x480        75.0     72.8     66.7     59.9
> >   720x400        70.1
> >   640x350        70.1
> > DVI-0 connected 1680x1050+0+0 (normal left inverted right x axis y
> > axis) 474mm x 296mm 1680x1050      59.9*+
> >   1280x1024      75.0     60.0
> >   1440x900       75.0     59.9
> >   1280x960       60.0
> >   1280x800       74.9     59.9
> >   1152x864       75.0
> >   1152x720       60.0
> >   1024x768       75.0     60.0
> >   832x624        74.6
> >   800x600        75.0     60.3
> >   640x480        75.0     59.9
> >   720x400        70.1
> >
> > I pasted the Xorg.log to http://pastebin.ca/1405612 . I got these
> > two screens to work with radeonhd and fglrx, is there a chance to
> > get that working with radeon too?
> 
> Should work.  Does:
> sleep 5; xset dpms force off
> cause both screens to come back on when you move the mouse?

No, that doesn't work, only the display that worked before works after
that.

> If so, can you try with the radeon driver from git?

I tried it anyway (want to try the powermanagement), no change here. I
pasted the Xorg.log to http://pastebin.ca/1406415 if you need that.
Anything else I can try? I tried to disable the "working" display and
only use the "blank" one, but that doesn't turn on the blank monitor
on, but uses the resolution of the blank monitor on the working monitor.
I used that xorg.conf for doing this:

> [... Keyboard, Mouse, DontZap Server Flag ...]
> 
> Section "Device"
> 	Identifier	"Configured Video Device"
> 	Driver		"radeon"
> 	Option		"monitor-DVI-1" "17Zoll"
> 	#Option		"monitor-DVI-0"	"22Zoll"
> 	#Option		"DefaultConnectorTable"	"true"
> EndSection
> 
> #Section "Monitor"
> #	Identifier	"22Zoll"
> #	Option		"PreferredMode"	"1680x1050"
> #EndSection
> 
> Section "Monitor"
> 	Identifier	"17Zoll"
> 	Option		"PreferredMode"	"1280x1024"
> 	#Option		"RightOf"	"22Zoll"
> EndSection
> 
> Section "Screen"
> 	Identifier	"Default Screen"
> 	#Monitor		"22Zoll"
> 	Monitor		"17Zoll"
> 	Device		"Configured Video Device"
> 	SubSection "Display"
> 		Virtual	2960 1050
> 	EndSubSection
> EndSection

I hope you have an idea what's wrong here. The radeon driver is really
great except my problem. Video playback works very well with kernel
2.6.30-rc3, thanks a lot for that!

Best regards,
Andreas

> 
> Alex
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