Mailinglist Archive: radeonhd (265 mails)
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Re: [radeonhd] Problem setting up multiple monitors with radeonhd and xrandr
- From: Matthias Hopf <mhopf@xxxxxxx>
- Date: Tue, 8 Jan 2008 15:40:17 +0100
- Message-id: <20080108144017.GC26576@xxxxxxx>
On Dec 30, 07 17:58:32 +0100, kzot@xxxxxxx wrote:
Please add the output of
xrandr --prop
I assume that panel and DVI connector are attached at the same output
(look out for the RANDR_OUTPUT_NUMBER, described also in the manpage) -
in that case you cannot use PANEL and DVI at the same time (except in
clone mode), as the hardware manufacture has made a *very* dumb wiring
decision.
I'm thinking about reflecting these output numbers by allowing only
certain CRTC numbers in the RandR compatibility layer, but that would be
only an ugly workaround.
However, DVI and VGA should be possible, with some *weird* calling
sequence. You have to first disable the panel, then enable the DVI.
You will probably find some errors or warnings in the log file.
Try
xrandr --output PANEL --off && xrandr --output DVI-D_1 --auto &&
xrandr --output VGA_1 --auto && xrandr --output VGA_1 --right-of DVI-D_1
Note that the panel will show something, but it might only be visible if
the DVI connected monitor uses the same resolution as the panel. If this
is not the case, everything depends on the intelligence of the panel.
And no, you cannot switch of the panel output when using DVI. This is
hardwired (at least if my estimation at the start of this mail is correct).
HTH
Matthias
--
Matthias Hopf <mhopf@xxxxxxx> __ __ __
Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@xxxxxxxxx
Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de
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To unsubscribe, e-mail: radeonhd+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: radeonhd+help@xxxxxxxxxxxx
I am running the following setup: T60 Thinkpad Notebook with an ATI X1400 and
two external monitors via docking station (DVI and VGA), i.e. I have 3
monitors. radeonhd/xrandr detects them all/correct, configure them as clones
and they run (beside some small graphic glitches on monitor PANEL) well.
Please add the output of
xrandr --prop
I assume that panel and DVI connector are attached at the same output
(look out for the RANDR_OUTPUT_NUMBER, described also in the manpage) -
in that case you cannot use PANEL and DVI at the same time (except in
clone mode), as the hardware manufacture has made a *very* dumb wiring
decision.
I'm thinking about reflecting these output numbers by allowing only
certain CRTC numbers in the RandR compatibility layer, but that would be
only an ugly workaround.
However, DVI and VGA should be possible, with some *weird* calling
sequence. You have to first disable the panel, then enable the DVI.
You will probably find some errors or warnings in the log file.
[root@thyone ~]# xrandr --output PANEL --off && xrandr --output DVI-D_1
--crtc
1 && xrandr --output VGA_1 --right-of DVI-D_1
----------------------
This results in both PANEL and DVI-D_1 being switched off.
Try
xrandr --output PANEL --off && xrandr --output DVI-D_1 --auto &&
xrandr --output VGA_1 --auto && xrandr --output VGA_1 --right-of DVI-D_1
Note that the panel will show something, but it might only be visible if
the DVI connected monitor uses the same resolution as the panel. If this
is not the case, everything depends on the intelligence of the panel.
And no, you cannot switch of the panel output when using DVI. This is
hardwired (at least if my estimation at the start of this mail is correct).
HTH
Matthias
--
Matthias Hopf <mhopf@xxxxxxx> __ __ __
Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@xxxxxxxxx
Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de
--
To unsubscribe, e-mail: radeonhd+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: radeonhd+help@xxxxxxxxxxxx
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