Dual headed Myth - was Re: [mythtv-users] PVR350/Myth Questions
David
myth at dgreaves.com
Wed Sep 15 04:14:13 EDT 2004
Jarod Wilson wrote:
> m0j0.j0j0 wrote:
>
>> I have a couple of lame IVTV/Myth questions. I am currently displaying
>> Myth using my onboard nVidia TV-out, but I would like to test that of my
>> PVR-350. I have a couple initial questions though, before I do this:
>>
>> -Is it possible to simultaneously send X/Myth to both the 350 and nVidia
>> TV-outs? I would like to use the 350 for displaying everything but
>> MythGame. I'm hoping I can have the display always get sent to both
>> devices, so I can just toggle on my stereo what input gets sent to the
>> TV.
>
>
> I don't believe that's possible.
simultaneously - no, it's effectively not possible (barring silly
vnc-like trickery). And it wouldn't get you what you want ('cos you'd
need accelerated X commands [glx?] sent to one and not to the other)
I do something very similar though. I run 2 instances of Myth on 1
machine on different virtual terminals and I switch between the VTs.
1 outputs to the TV, via the PVR350, the other to a vga device
(projector) via a vga card.
I created a new user (mybhbig) and started an X session with an
alternate config
here's the lines from my /etc/init.d/ script
chvt 8
nohup su - mythbig /home/mythbig/runx >>/var/log/projector.log
2>&1 &
(chvt is a fantastic command - possibly worth putting in your .lirc file)
runx is a 2 line script:
export QT_XFT=1
xinit -- :1 -layout Projector
note the use of -layout. This corresponds to a layout section in
XF86Config-4
my .xinitrc says:
xsetroot -solid black
xhost +
nvidia-settings -l --assign="SyncToVBlank=1"
mythfrontend -v &
ratpoison
The first ServerLayout is used by default, the second has to be
specified by name:
Section "ServerLayout"
Identifier "TV"
Screen 0 "TV"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "PS/2 Mouse" "CorePointer"
Option "Xinerama" "off"
EndSection
Section "ServerLayout"
Identifier "Projector"
Screen 0 "ProjScreen"
Option "Xinerama" "off"
Option "AllowMouseOpenFail"
InputDevice "PS/2 Mouse" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
You can then easily switch (ctrl-alt-F<x>) between TV and VGA screens.
You may have problems sharing the sound/dsp device if you switch whilst
it's in use)
David
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