pyglet error message, any advice

[Britt]

I searched in the archives and did not see a strictly similar case. Does anyone have a suggestion for what might be causing the following errors? Basically this error happens for all demos, and my own files. This is a new installation, and I have updated my video card driver and python libraries. The pyglet version is 1.1.4. Here is a minimal session with the error trace. Thank you, Britt Anderson


Python 2.7.5 (default, May 12 2013, 12:00:47)
[GCC 4.8.0 20130502 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from psychopy import visual
>>> mywin = visual.Window(size = (200,200))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/PsychoPy-1.77.01-py2.7.egg/psychopy/visual.py", line 308, in __init__
    elif self.winType == "pyglet": self._setupPyglet()
  File "/usr/lib/python2.7/site-packages/PsychoPy-1.77.01-py2.7.egg/psychopy/visual.py", line 948, in _setupPyglet
    config = GL.Config(depth_size=8, double_buffer=True,
  File "/usr/lib/python2.7/site-packages/pyglet/__init__.py", line 306, in __getattr__
    __import__(import_name)
  File "/usr/lib/python2.7/site-packages/pyglet/gl/__init__.py", line 510, in <module>
    import pyglet.window
  File "/usr/lib/python2.7/site-packages/pyglet/window/__init__.py", line 1684, in <module>
    gl._create_shadow_window()
  File "/usr/lib/python2.7/site-packages/pyglet/gl/__init__.py", line 494, in _create_shadow_window
    _shadow_window = Window(width=1, height=1, visible=False)
  File "/usr/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py", line 474, in __init__
    super(XlibWindow, self).__init__(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/pyglet/window/__init__.py", line 686, in __init__
    self._create()
  File "/usr/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py", line 651, in _create
    self.set_caption(self._caption)
  File "/usr/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py", line 822, in set_caption
    self._set_text_property('_NET_WM_NAME', caption)
  File "/usr/lib/python2.7/site-packages/pyglet/window/xlib/__init__.py", line 1065, in _set_text_property
    raise XlibException('Could not create UTF8 text property')
pyglet.window.xlib.XlibException: Could not create UTF8 text property

[Jonathan Peirce]

I don't know the answer for this specific error message but pyglet does sometimes have trouble setting up its 'shadow window' (is this an Intel graphics card by any chance?). That can generally be worked around by not allowing it to create one.

Try beginning your script (before importing psychopy) with
import pyglet
pyglet.options['shadow_window']=False

Or
In your shell create an environment variable called PYGLET_SHADOW_WINDOW and set it to 0

see if that helps. The negative side-effects (if there are any) would be to do with having multiple windows open.
Jon

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Jonathan Peirce
Nottingham Visual Neuroscience

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[Britt]

The problem turned out to be in the language settings on my linux system. Somehow, I am not sure how, I managed to set the language variables in my /etc/locale.conf to en_US_UTF.8 instead of en_US_UTF-8 *Note that the "-" was replaced by a ".". Resetting these variables correctly and rebooting fixed the problem. This will only be an issue for people who use Linux, and like me, fiddle with things they really do not understand.

As an aside, is there any way to edit, after the fact, the title of the posts to [SOLVED]... as I see on some forums?

[Jonathan Peirce]

On 27/06/2013 14:23, Britt wrote:

The problem turned out to be in the language settings on my linux system. Somehow, I am not sure how, I managed to set the language variables in my /etc/locale.conf to en_US_UTF.8 instead of en_US_UTF-8 *Note that the "-" was replaced by a ".". Resetting these variables correctly and rebooting fixed the problem. This will only be an issue for people who use Linux, and like me, fiddle with things they really do not understand.

Glad that got worked out. Very strange that the problem exhibited itself in that way :-/

As an aside, is there any way to edit, after the fact, the title of the posts to [SOLVED]... as I see on some forums?

I don't think there's a way to do this post-hoc, but in this message I'm testing what happens when we add [SOLVED] to the subject line, to see if it shows up as a new thread or replaces the title of the previous.

cheers,
Jon

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[Johan van der Meer]

Hi!

I tried your solution to this problem to deal with another problem, illustrated here:

Left: "from psychopy import visual" gives this exception

Right: the exception is absent when I set the pyglet option first.

Does this look familiar?

Thanks

Best

Johan

[Michael MacAskill]

Dear Johan,

This mailing list is deprecated. You would be best to raise this on the forum at <https://discourse.psychopy.org>

Regards,

Michael

> On 16/06/2018, at 14:28, Johan van der Meer <johanva...@gmail.com> wrote:
>
>
> Hi!
>
> I tried your solution to this problem to deal with another problem, illustrated here:
>

> <Auto Generated Inline Image 1.png>