[PD] [Gnome/Ubuntu] Gem video on external screen

[olsen]

Roman Haefeli wrote:
> On Thu, 2008-10-23 at 11:14 +0800, Simon Wise wrote:
>> On 23 Oct 2008, at 6:41 AM, Martin . wrote:
>>
>>> Actually, the CPU bit is not true. Its at 50-60% regardless, sorry for
>>> the noise.
>>>
>>> Still though, I guess the main issue is that Gem crashes upon loading
>>> videos into pix_film. Anyone know a way to track the reason for Gem
>>> troubles?
>>>
>>> cheers,
>>> Martin
>>>
>>> On Thu, Oct 23, 2008 at 12:24 AM, Martin .  
>>> <blindmanonacid at gmail.com> wrote:
>>>> Hi all,
>>>>
>>>> Im a bit desperate to find a way to play video on an external screen
>>>> without Gem (or even X/Gnome) crashing.
>>>>
>>>> Ive set up xorg.conf to a virtual screensize of the double
>>>> horizontally so as to have a projector read the video from the "right
>>>> part" of the screen, and still have my GUIs visible on the "left  
>>>> part"
>>>> (what is visible on my laptop screen).
>>>>
>> you will probably need to set xorg for two separate displays, and one  
>> of these can be 3D accelerated, I usually start pd with Gem from the  
>> display with the projector, and control it with another pd started on  
>> the other display. This has worked well with 4 screens from 2 NVIDIA  
>> cards uswing debian, I guess it would be also ok with an intel  
>> chipset, as it does not rely on twinview or any other fancy graphics  
>> stuff. Alternatively I believe Gem can open a gemwin on a different  
>> display to the one pd was started on, check the list archives as I  
>> have not tried this.
> 
> 
> if you have to separate x displays running, you can start pd and its gui
> on the first screen and by sending 'create :0.1' (or whatever id the
> second display has) to [gemwin] you can create the gem window on the
> external screen/projector.
wouldn't it be nice to have this in the documentation as part of the 
gemwin-help [pd window properties] subpatch?
greets
olsen


> 
> i made different experiences with different video cards. with an ati
> radeon mobility 9600 i was only able to have 3d acceleration on the
> first head. with several nvidia cards i managed to have hardware
> acceleration running on both heads. you probably find more info about
> how to set up 3d acceleration on the ubuntu wiki. gem should print
> something like 'GEM: Direct Rendering enabled!', when you start the
> rendering, if 3d acceleration works.
> 
> roman
> 
> 
> 
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