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EtienneCmb / visbrain

A multi-purpose GPU-accelerated open-source suite for brain data visualization
http://visbrain.org
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using visbrain with x11 forwarding and xming #46

Closed kgerman73 closed 5 years ago

kgerman73 commented 5 years ago

I get the following error trying to import the visbrain modules. This is a RHEL7 workstation which I ssh into using putty and forward x11 to xming. Is visbrain not compatible with xming?

-> python3

Python 3.6.8 (default, Apr 25 2019, 21:02:35) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from visbrain.gui import Brain qt.qpa.xcb: could not connect to display qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.

Aborted

-> python3 -m pip list | egrep -i 'numpy|matplot|vispy|pyqt5|pyopengl|pillow|visbrain'

matplotlib 2.1.0 numpy 1.16.4 Pillow 6.0.0 PyOpenGL 3.1.0 PyQt5 5.12.2 PyQt5-sip 4.19.17 visbrain 0.4.4 vispy 0.5.3

Thanks, Keith

kgerman73 commented 5 years ago

I added the path to the libxkbcommon libraries and now I get a different error.

-> python3

Python 3.6.8 (default, Apr 25 2019, 21:02:35) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from visbrain.gui import Sleep qt.qpa.xcb: X server does not support XInput 2 failed to get the current screen resources >>> WARNING: QXcbConnection: XCB error: 1 (BadRequest), sequence: 163, resource id: 90, major code: 130 (Unknown), minor code: 47 WARNING: QXcbConnection: XCB error: 170 (Unknown), sequence: 176, resource id: 90, major code: 146 (Unknown), minor code: 20 >>> Sleep().show() visbrain_data has been added to /home/***/visbrain_data/ python3: symbol lookup error: /usr/local/lib64/python3.6/site-packages/PyQt5/Qt/plugins/platforms/../../lib/libQt5XcbQpa.so.5: undefined symbol: FT_Get_Font_Format

EtienneCmb commented 5 years ago

Hi @kgerman73 ,

Unfortunately, I've never used such configuration. But visbrain is tested on a server (travis). May be take a look at the configuration file

EtienneCmb commented 5 years ago

I might also comes from the PyQt version. I recommend to try out version <5.12 (pip install --retries 3 "pyqt5<5.12.0"). You can check the version using : 

from PyQt5.QtCore import QT_VERSION_STR
from PyQt5.Qt import PYQT_VERSION_STR
from sip import SIP_VERSION_STR

print("Qt version:", QT_VERSION_STR)
print("SIP version:", SIP_VERSION_STR)
print("PyQt version:", PYQT_VERSION_STR)
kgerman73 commented 5 years ago

Downgraded PyQt5, now get a different error.

-> python3 -m pip list | grep PyQt5

PyQt5 5.11.3 PyQt5-sip 4.19.17

-> python3

Python 3.6.8 (default, Apr 25 2019, 21:02:35) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from visbrain.gui import Brain failed to get the current screen resources Could not initialize GLX Aborted

EtienneCmb commented 5 years ago

Does the travis file help?

kgerman73 commented 5 years ago

Not with Xming but I tried VcXsrv and it works. Thanks for your help.

EtienneCmb commented 5 years ago

It might be interesting for others to describe the steps you did . Should I closed the issue?

kgerman73 commented 5 years ago

I went through the travis config file and installed the python packages listed in the "install" section and downgraded PyQt5 to 5.11.3 but that didn't help. I was googling the error messages and came across a thread that said VcXsrv when Xming didn't so I gave it a shot. Installed with default options and worked like a charm. Please feel free to close the issue.

https://sourceforge.net/projects/vcxsrv/

HTH, Keith