tablet as a second monitor on linux

Adam Groszer agroszer at gmail.com
Thu Dec 20 22:10:50 PST 2012


Hello,

yeah, but after

x11vnc -clip 1280x800+1280+0

it's a matter of a vnc viewer (for example on android) to make it remote

On Thu, Dec 20, 2012 at 8:34 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Thu, Dec 20, 2012 at 2:13 PM, Adam Groszer <agroszer at gmail.com> wrote:
>> (missed the list)
>>
>>
>> ---------- Forwarded message ----------
>> Hello,
>>
>> Seems like xfwm4 is the culprit, metacity handles
>>
>> xrandr --addmode VGA-0 1280x800
>> xrandr --output VGA-0 --mode 1280x800 --right-of LVDS
>>
>> just fine
>
> Ok, but those are local connectors on a single GPU, not a remote display.
>
> Alex
>
>>
>> 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,
>>  Adam
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