I now tried on a Ubuntu 13.10 machine
I run xvfb-run ipython hello_world.py
<https://github.com/benatkin/pyglet-stuff/blob/master/hello_world.py>:
Traceback (most recent call last):
File "hello_world.py", line 3, in <module>
window = pyglet.window.Window()
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/__init__.py", line
357, in __getattr__
__import__(import_name)
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/window/__init__.py",
line 1817, in <module>
gl._create_shadow_window()
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/gl/__init__.py",
line 205, in _create_shadow_window
_shadow_window = Window(width=1, height=1, visible=False)
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py",
line 163, in __init__
super(XlibWindow, self).__init__(*args, **kwargs)
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/window/__init__.py",
line 559, in __init__
self._create()
File
"/home/andrea/.local/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py",
line 210, in _create
visual_info = self.config.get_visual_info()
File "/home/andrea/.local/lib/python2.7/site-packages/pyglet/gl/xlib.py",
line 182, in get_visual_info
self.canvas.display._display, self._fbconfig).contents
ValueError: NULL pointer access
On Tuesday, September 29, 2015 at 11:11:14 AM UTC-4, swiftcoder wrote:
>
> What are the chances you can switch to a Linux server?
>
> It's likely to be a lot simpler to get X to give you a headless
> framebuffer (or MESA equivalent), then to rewrite pyglet's OS X
> implementation to allow headless operation.
> On Tue, Sep 29, 2015 at 07:20, Andrea Cuttone <andrea...@gmail.com
> <javascript:>> wrote:
>
>> the app is already written using pyglet. Wouldn't that require to
>> complete rewrite it using pycairo?
>>
>>
>>
>> Andrea Cuttone
>>
>> On Tue, Sep 29, 2015 at 10:13 AM, Andre D <an...@andred.ca <javascript:>>
>> wrote:
>>
>>> Does something like pycairo fit your needs?
>>> On Sep 29, 2015 10:12 AM, "Andrea Cuttone" <andrea...@gmail.com
>>> <javascript:>> wrote:
>>>
>>>> The application is https://github.com/andrea-cuttone/geoplotlib, a
>>>> python library for plotting geographical data.
>>>> The use case is running the app to render the maps, capture the
>>>> framebuffer and store it to disk in form of raster images.
>>>> This works great when there is a physical screen attached, but it fails
>>>> with a headless session.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Andrea Cuttone
>>>>
>>>> On Tue, Sep 29, 2015 at 10:05 AM, Andre D <an...@andred.ca
>>>> <javascript:>> wrote:
>>>>
>>>>> What does the application do with pyglet that a terminal is sufficient?
>>>>> On Sep 29, 2015 9:57 AM, "Andrea Cuttone" <andrea...@gmail.com
>>>>> <javascript:>> wrote:
>>>>>
>>>>>> remote desktop is not a good option in our setup, as it is very slow
>>>>>> over VPN, and also we would like to limit the access we give to users to
>>>>>> just a terminal.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Andrea Cuttone
>>>>>>
>>>>>> On Mon, Sep 28, 2015 at 4:37 PM, Tristam MacDonald <
>>>>>> swift...@gmail.com <javascript:>> wrote:
>>>>>>
>>>>>>> How about remote desktop'ing in, instead of headless SSH?
>>>>>>> On Mon, Sep 28, 2015 at 13:15, Andrea Cuttone <andrea...@gmail.com
>>>>>>> <javascript:>> wrote:
>>>>>>>
>>>>>>>> yes I guess this is the issue, since I am connected with ssh and
>>>>>>>> there is no window manager running.
>>>>>>>>
>>>>>>>> So the question is how to make pyglet use a virtual window manager
>>>>>>>> such as Xvfb <https://en.wikipedia.org/wiki/Xvfb> (which is based
>>>>>>>> on XQuartz)
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Monday, September 28, 2015 at 4:12:08 PM UTC-4, Rob wrote:
>>>>>>>>>
>>>>>>>>> I guess this answers it:
>>>>>>>>>
>>>>>>>>> Sep 28 21:58:49 1.1.1.1 python[14740] <Error>: This user is not
>>>>>>>>> allowed access to the window system right now.
>>>>>>>>> _RegisterApplication(), FAILED TO establish the default connection
>>>>>>>>> to the WindowServer, _CGSDefaultConnection() is NULL.
>>>>>>>>>
>>>>>>>>> Not sure if this is something we could fix in pyglet, or whether
>>>>>>>>> it is a system config thing.
>>>>>>>>>
>>>>>>>>> Rob
>>>>>>>>>
>>>>>>>>> Op maandag 28 september 2015 22:03:08 UTC+2 schreef Andrea Cuttone:
>>>>>>>>>>
>>>>>>>>>> Hi
>>>>>>>>>>
>>>>>>>>>> here is the output of `python -m pyglet.info` on the server
>>>>>>>>>>
>>>>>>>>>> https://gist.github.com/andrea-cuttone/61e3dd1f71c5f58b8996
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Andrea Cuttone
>>>>>>>>>>
>>>>>>>>>> On Mon, Sep 28, 2015 at 3:50 PM, Rob <silves...@gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi,
>>>>>>>>>>>
>>>>>>>>>>> Can you check what `python -m pyglet.info` returns?
>>>>>>>>>>>
>>>>>>>>>>> Rob
>>>>>>>>>>>
>>>>>>>>>>> Op maandag 28 september 2015 21:16:34 UTC+2 schreef Andrea
>>>>>>>>>>> Cuttone:
>>>>>>>>>>>
>>>>>>>>>>>> Hello
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> I am trying to run a hello world pyglet app on OSX 10.10, where
>>>>>>>>>>>> I connect through ssh.
>>>>>>>>>>>> When doing that, I get the following error:
>>>>>>>>>>>>
>>>>>>>>>>>> /Users/ancu/pyglet-1.2.3/pyglet/canvas/base.pyc in
>>>>>>>>>>>> get_default_screen(self)
>>>>>>>>>>>> 72 :rtype: :class:`Screen`
>>>>>>>>>>>> 73 '''
>>>>>>>>>>>> ---> 74 return self.get_screens()[0]
>>>>>>>>>>>> 75
>>>>>>>>>>>> 76 def get_windows(self):
>>>>>>>>>>>>
>>>>>>>>>>>> IndexError: list index out of range
>>>>>>>>>>>>
>>>>>>>>>>>> which I assume is due to the fact that no Window Manager is
>>>>>>>>>>>> running.
>>>>>>>>>>>>
>>>>>>>>>>>> I saw that some people suggest to use the virtual X server
>>>>>>>>>>>> Xvfb. However even if I have Xvfb running, pyglet seem to not
>>>>>>>>>>>> detect it.
>>>>>>>>>>>>
>>>>>>>>>>>> Does anyone have experience on how to solve this?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Best,
>>>>>>>>>>>>
>>>>>>>>>>>> Andrea
>>>>>>>>>>>>
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