[SOLVED] qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""

[pussinmood]

Sorry to bother you again,but i really need your help ,after really struggling with this "qt.qpa.xcb: could not connect to display :1.0 qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.". I handled it with thishttps://forum.qt.io/topic/132855/qt-qpa-xcb-could-not-connect-to-display-1-0-qt-qpa-plugin-could-not-load-the-qt-platform-plugin-xcb-in-even-though-it-was-found. But new issue appear after that ,trace back is like : Traceback (most recent call last): File "/home/fb/RVT/rvt/eval.py", line 556, in _eval(args) File "/home/fb/RVT/rvt/eval.py", line 510, in _eval scores = eval( ^^^^^ File "/home/fb/.conda/envs/rvt/lib/python3.11/site-packages/torch/utils/_contextlib.py", line 116, in decorate_context return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/eval.py", line 300, in eval raise e File "/home/fb/RVT/rvt/eval.py", line 294, in eval for replay_transition in generator: File "/home/fb/RVT/rvt/libs/YARR/yarr/utils/rollout_generator.py", line 40, in generator obs = env.reset_to_demo(eval_demo_seed) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/utils/custom_rlbench_env.py", line 34, in reset_to_demo desc, obs = self._task.reset_to_demo(d) ^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/task_environment.py", line 161, in reset_to_demo return self.reset() ^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/task_environment.py", line 75, in reset desc = self._scene.init_episode( ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/backend/scene.py", line 136, in init_episode self.task.validate() File "/home/fb/RVT/rvt/libs/RLBench/rlbench/backend/task.py", line 274, in validate self._waypoints = self._get_waypoints() ^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/backend/task.py", line 410, in _get_waypoints feasible, way_i = self._feasible(waypoints) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/backend/task.py", line 361, in _feasible path = point.get_path(ignore_collisions=True) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/RLBench/rlbench/backend/waypoints.py", line 55, in get_path path = arm.get_path(self._waypoint.get_position(), ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/PyRep/pyrep/robots/arms/arm.py", line 444, in get_path p = self.get_nonlinear_path( ^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/PyRep/pyrep/robots/arms/arm.py", line 385, in get_nonlinearpath , retfloats, , _ = utils.script_call( ^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/PyRep/pyrep/backend/utils.py", line 65, in script_call return sim.simExtCallScriptFunction( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/fb/RVT/rvt/libs/PyRep/pyrep/backend/sim.py", line 698, in simExtCallScriptFunction _check_return(ret) File "/home/fb/RVT/rvt/libs/PyRep/pyrep/backend/sim.py", line 27, in _check_return raise RuntimeError( RuntimeError: The call failed on the V-REP side. Return value: -1

[pussinmood]

And before this trace back ,lots of "QFactoryLoader::QFactoryLoader() looking at "/home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/b0_bubbleRob" "Failed to extract plugin meta data from '/home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/b0_bubbleRob'" not a plugin" appeared many many times,i have no idea what went wrong.

[pussinmood]

Then i want to eval one task only ,it also appeared hundreds of "Failed to extract plugin meta data from '/home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/b0_bubbleRob'" not a plugin" ,and this ends with "Error: signal 11:

/home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_Z11_segHandleri+0x30)[0x7f1c3dde4ae0] /lib/x86_64-linux-gnu/libc.so.6(+0x43090)[0x7f1d9c319090] /lib/x86_64-linux-gnu/libc.so.6(+0x188915)[0x7f1d9c45e915] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_Z15initGl_ifNeededv+0x11c)[0x7f1c3df8acac] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN19COffscreenGlContextC1EiiiP9QGLWidgetii+0x1d2)[0x7f1c3dfeeff2] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN20CVisionSensorGlStuffC1EiiibP9QGLWidgetbbii+0x7d)[0x7f1c3dff083d] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN13CVisionSensor45createGlContextAndFboAndTextureObjectIfNeededEb+0x19d)[0x7f1c3dcb692d] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN13CVisionSensor13detectEntity2Eibbbb+0x35f)[0x7f1c3dcbb46f] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN13CVisionSensor44detectVisionSensorEntity_executedViaUiThreadEibbbb+0x79c)[0x7f1c3dcbbf1c] /home/fb/RVT/CoppeliaSim_Player_V4_1_0_Ubuntu20_04/libcoppeliaSim.so.1(_ZN9CUiThread27_executeCommandViaUiThreadEP16SUIThreadCommandS1+0x14a2)[0x7f1c3df437c2]". No traceback this time...

[imankgoyal]

Related issue #2

Did you try the possible solution there?

I have found this issue to be tricky to handle, and it depends significantly on the system configuration. I recommend first trying a local system with a display. Then, if the same setup doesn't work on the remote, try the xvfb solution.

[pussinmood]

Thanks for your patience,i will try this out.

[pussinmood]

It seems my server has no X , i shoud find a way to fix it

[pussinmood]

i solved these issues by virtualGL and opengl_headless, copied here ,hope to help someone like me:

apt update && apt install -y libglu1-mesa-dev mesa-utils xterm xauth x11-xkb-utils xfonts-base xkb-data libxtst6 libxv1

export TURBOVNC_VERSION=2.2.5 export LIBJPEGVERSION=2.0.90 wget http://aivc.ks3-cn-beijing.ksyun.com/packages/libjpeg-turbo/libjpeg-turbo-official${LIBJPEG_VERSION}amd64.deb wget http://aivc.ks3-cn-beijing.ksyun.com/packages/turbovnc/turbovnc${TURBOVNC_VERSION}amd64.deb dpkg -i libjpeg-turbo-official${LIBJPEG_VERSION}amd64.deb dpkg -i turbovnc${TURBOVNC_VERSION}_amd64.deb rm -rf *.deb

rm -rf /tmp/.X1* USER=root /opt/TurboVNC/bin/vncserver :1 -desktop X -auth /root/.Xauthority -geometry 1920x1080 -depth 24 -rfbwait 120000 -rfbauth /root/.vnc/passwd -fp /usr/share/fonts/X11/misc/,/usr/share/fonts -rfbport 6006

ps -ef | grep vnc

And with xvfb-run python eval.py......

Before the succeed ,i also use these command ,don't know which actually did the job: sudo apt update sudo apt install xvfb sudo apt install xserver-xorg sudo apt install xinit sudo apt install mesa-utils sudo apt install nvidia-settings sudo apt install kmod sudo apt install module-init-tools

[pussinmood]

Big gratitude，great love！