tablet as a second monitor on linux

[Alex Deucher]

On Wed, Dec 19, 2012 at 3:21 AM, Adam GROSZER <agroszer.ll at gmail.com> wrote:
> On 12/18/2012 08:44 PM, Alex Deucher wrote:
>>
>> On Tue, Dec 18, 2012 at 1:30 PM, Adam Groszer <agroszer.ll at gmail.com>
>> wrote:
>>>
>>> Hello,
>>>
>>> I'm trying to use an android tablet as a secondary monitor for my laptop.
>>> Secondary monitor as one physical would be plugged into the VGA port.
>>> Googling resulted in no concrete solution.
>>
>>
>> Does the tablet have a VGA input port and can it act as a monitor or
>> are you asking about using it as a virtual second monitor?  If the
>> latter, you can probably play with xdmx assuming you can get an
>> xserver running on the tablet, however, there's no real official
>> solution that I know of.  Anything will basically be a hack.
>>
>> Alex
>
>
> No VGA, I definitely need it as virtual, any communication can go only over
> TCP/IP.
>
> There's an xserver for android, but it's rather incomplete.
> Starting xfwm4 with it burps a lot of errors.
> As it looks the most solid way to mirror a screen to a tablet is vnc.
>
> The question is, how to create the secondary headless virtual monitor with
> X. I'm lost there.
> (Maybe I'll force with xrandr to display that secondary on the VGA against
> no real monitor connected.
> Something along:
> http://lists.freedesktop.org/archives/intel-gfx/2009-October/004531.html
> or
> http://askubuntu.com/questions/150879/can-i-force-vga-signal-output-even-when-xrandr-shows-disconnected
> Because what I actually want is like having a second monitor, but it's
> "attached" via vnc-TCP/IP)
>

As I said, originally, you need something like xdmx:
http://en.wikipedia.org/wiki/Xdmx
It's basically a proxy xserver that connects to xservers on multiple
boxes and presents the result as a single xserver.

Alex

>>
>>>
>>> With some help of a friend, the http://pastie.org/5548492 script kind
>>> of works. (on xubuntu 11.10)
>>> Problems:
>>> - the XFCE top panel gets extended to the "tablet monitor"
>>> - the mouse pointer cannot enter the "tablet monitor"
>>> - both above together cause the panel to be inaccessible
>>>
>>> Any pointers are welcome, how to solve this.
>>>
>>> --
>>> Best regards,
>>>   Adam
>
>
> --
> Best regards,
>  Adam GROSZER
> --
> Quote of the day:
> It's hard to remain true to a changing self.