[ltp] Radeon: hot-swap VGA-out monitor

[Christopher Singley]

Thanks for the responses.

Mario, your trick works for me.  In xorg.conf, I set the following options 
(irrelevant directives deleted):


On Thursday 06 September 2007 14:05:02 Mario Theodoridis wrote:
> i've had this setup on a t42p.
> I found the trick to be to specify monitor settings and not let them be
> auto detected. Xorg.conf attached.
>
> This was using it with my old Viewsonic GS815 on xorg 6.8. It also worked
> well with projectors.
>
>
> mario;>
>
> So, Andrey Kislyuk wrote:
> > Monitor hotplug is in Xorg 7.3, which was released today. All you have
> > to do is wait for it to hit your distribution.
> >
> > Christopher Singley wrote:
> >> I have a Thinkpad R51 with an ATI Radeon 250 graphics card.  The card
> >> has a  VGA out port, and I like to run in dual-head configuration
> >> (external monitor  attached) using the MergedFB options of the Radeon
> >> X driver.
> >>
> >> This generally works well; however I'd like to be able to hot-swap
> >> monitors &  toggle at will between single-head & dual-head
> >> configuration.
> >>
> >> Using the radeon driver's "MergedFBAuto" option works to allow X to
> >> autodetect  single/dual-head configuration when it starts up.  If it
> >> starts up in  dual-head mode, setting "MetaModes" like
> >> "1024x768-1024x768 1024x768"  additionally allows me to use xrandr to
> >> dynamically switch back & forth  between single/dual-head when I
> >> plug/unplug the external monitor.
> >>
> >> However, if no external monitor is detected when X starts up, I don't
> >> know how  to force a configuration so that when I subsequently plug in
> >> an external  monitor, I can switch over to dual-head configuration on
> >> the fly without  restarting X.
> >>
> >> I imagine this must be a feature desired by many people other than
> >> just me.   Can anyone give me a hint how to set this up?
> >>
> >> Thanks,
> >> cs
> >
> > --
> > The linux-thinkpad mailing list home page is at:
> > http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad



-- 
Christopher Singley, CFA
President, Singley Capital Management, Inc.
tel (713) 459-0881