xf86-video-dummy with randr support - is anyone else interested? Alternatives?
Leho Kraav
leho at kraav.com
Thu Aug 11 02:42:16 PDT 2011
On 10.07.2011 21:17, Alan Cox wrote:
>> Alternatives? I cannot find any other driver that would act as a virtual
>> screen like xf86-video-dummy, but would provide a RandR-compliant
>> framebuffer for me. I don't think Xephyr, Xdmx, Xvnc, x2x and whatnot
>> others can help me here, Awesome needs to see something as a regular
>> RandR screen next to the built in panel. Or is it possible to fake this
>> display somehow while being forwarded to another Xserver copy?
>
> Actually they can do. The way I have my little one set up for debugging
> and devel work is to create separate X server for it and then I can bind
> input devices to it or use x2x as well as using the input filters to make
> it grab the actual touchscreen. If you want it to just hotplug you'll
> need udev rules as well, and depending upon your auth needs possible gdm
> scripting.
Right, synergy is also an option here probably next to x2x.
> If you want persistence you could look at making your main desktop bigger
> than the display and then using x11vnc to export the undisplayed corner
> to the displaylink server ?
I don't think it's possible to have a disproportionate rectangle added
with xrandr? Watch out, ASCII art coming up.
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>> In case any awesome devs are here, would it actually make sense to patch
>> it on awesome side? Which work list is greater?
>
> The big problem with RandR and friends is that the moment you include a
> Displaylink device all your 3D vanishes on all the desktops. This is
Having lived with this thing now for some more time, I'm pretty certain
I'd like some kind of a dynamically created in-memory RandR screen.
http://www.spinics.net/lists/xorg/msg52313.html Adam Jackson's reply
here to someone else seems to imply such a beast is possible.
I wonder if it is possible to have this dummy screen without a
pre-defined ServerLayout.
Until then, it looks I will have to run dual X servers.
--
Leho Kraav, M.Sc.
http://leho.kraav.com
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