Thanks Antoine,
On 05/10/2018 18:54, Antoine Martin via shifter-users wrote:
On 05/10/2018 14:00, Iwan Vosloo via shifter-users wrote:
When run from a normal, "Ubuntu" session (meaning the new Gnome shipped
with Ubuntu 18.04), all is well.
However, if we log into a unity session (which is what we'd like to do),
xpra cannot attach, giving:
2018-10-05 08:35:15,622 Xpra gtk2 client version 2.3.4-r20509 64-bit
2018-10-05 08:35:15,623 running on Linux Ubuntu 18.04 bionic
2018-10-05 08:35:17,212 GStreamer version 1.14.1 for Python 2.7.15 64-bit
2018-10-05 08:35:17,376 No OpenGL_accelerate module loaded: No module
named OpenGL_accelerate
/usr/lib/python2.7/dist-packages/xpra/client/gl/gtk_base/gtkgl_check.py:152:
Warning: cannot register existing type 'GdkScreen'
glarea.realize()
/usr/lib/python2.7/dist-packages/xpra/client/gl/gtk_base/gtkgl_check.py:152:
Warning: g_once_init_leave: assertion 'result != 0' failed
glarea.realize()
/usr/lib/python2.7/dist-packages/xpra/client/gl/gtk_base/gtkgl_check.py:152:
GtkWarning: gdk_screen_is_composited: assertion 'GDK_IS_SCREEN (screen)'
failed
glarea.realize()
Segmentation fault (core dumped)
That's an OpenGL crash.
We have sanity checks to verify that the OpenGL drivers work properly
before we enable them, but it is those checks that are causing the crash
here. If the drivers can't create a simple test window, something is
fundamentally wrong.
Looks like the opengl bindings don't run properly under Unity.
This would be a bug for Unity or gtkgl.
You may have more luck with the alternative opengl backend:
xpra attach --opengl=native
The only thing we could do better here would be to proactively disable
OpenGL under Unity.
I realise something besides xpra must be causing the issue - something
that changed between ubuntu 16.04 (where Unity works fine) and 18.04.
Not sure how to get more info to poinpoint the issue though.
Let us know how you get on so that I can blacklist Unity if necessary.
with --opengl=native things still dont work and I get output:
2018-10-07 14:31:18,390 Xpra gtk2 client version 2.3.4-r20509 64-bit
2018-10-07 14:31:18,391 running on Linux Ubuntu 18.04 bionic
2018-10-07 14:31:20,113 GStreamer version 1.14.1 for Python 2.7.15 64-bit
2018-10-07 14:31:20,275 No OpenGL_accelerate module loaded: No module
named OpenGL_accelerate
/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_client_base.py:1020:
Warning: cannot register existing type 'GdkScreen'
window.realize()
/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_client_base.py:1020:
Warning: g_once_init_leave: assertion 'result != 0' failed
window.realize()
/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_client_base.py:1020:
GtkWarning: gdk_screen_is_composited: assertion 'GDK_IS_SCREEN (screen)'
failed
window.realize()
2018-10-07 14:31:20,529 OpenGL enabled with Mesa DRI Intel(R) HD
Graphics 520 (Skylake GT2)
However that process seems to hang and never reports being attached. I
have to kill -9 to get rid of it.
It wouldn't hurt to have the output of the command:
xpra opengl
No OpenGL_accelerate module loaded: No module named OpenGL_accelerate
GLU.extensions=GLU_EXT_nurbs_tessellator GLU_EXT_object_space_tess
GLU.version=1.3
accum-blue-size=0
accum-green-size=0
accum-red-size=0
alpha-size=0
aux-buffers=0
blue-size=8
depth=24
depth-size=0
display_mode=DOUBLE
double-buffered=True
gdkgl={'version': (1, 4)}
gdkglext={'version': (1, 2, 0)}
green-size=8
gtkglext={'version': (1, 2, 0)}
has-depth-buffer=False
has-stencil-buffer=False
has_alpha=False
max-viewport-dims=(32768, 32768)
opengl=3.0
pygdkglext={'version': (1, 1, 0)}
pyopengl=3.1.1a1
red-size=8
renderer=Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
rgba=True
safe=True
sample-buffers=0
samples=0
shading-language-version=1.30
stencil-size=0
stereo=False
texture-size-limit=16384
transparency=True
vendor=Intel Open Source Technology Center
zerocopy=False
If we run it under unity with:
xpra attach --sharing=yes --opengl=no ssh:vagrant@10.0.3.140:100
...then it attaches fine (also according to the server log file), but
running a program on :100 does not open a window on the attached client.
This looks like a separate issue.
It's very difficult to tell you anything useful as there just isn't
enough information there. FWIW, I've just tried it and encountered no
problems.
Try filing a ticket and make sure to include "xpra info".
Ok, thanks I did so and included output of xpra opengl and xpra info.
Regards
Iwan
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