Fwd: tablet as a second monitor on linux

Adam Groszer agroszer at gmail.com
Thu Dec 20 11:13:27 PST 2012

(missed the list)

---------- Forwarded message ----------

Seems like xfwm4 is the culprit, metacity handles

xrandr --addmode VGA-0 1280x800
xrandr --output VGA-0 --mode 1280x800 --right-of LVDS

just fine

On Wed, Dec 19, 2012 at 2:48 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> 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.

Best regards,

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