qt.qpa.screen: QXcbConnection: Could not connect to display Could not connect to any X display.

lcleve

I tested for x11 using: echo $XDG_SESSION_TYPE at the $prompt of the terminal. The terminal I used is the default terminal that installed with the operating systems (18.04 and 20.10), presumably gnome-terminal? Should I switch to another?

What is it that you see that indicates that "env seems to return empty"?

Could it be a matter of permissions, given that that a gui (albeit distorted ) did appear on the screen when I opened from root?

Thanks.

lcleve

SGaist

I thought you called the env command and did not saw anything printed.

So it was not the case, can you call it and show what you get ?

lcleve

@SGaist
here is the result for 18.04. If this is not informative, I can send the result for 20.10, but it will take me a few minuttes to change hard drives.

(base) william@william-HP-Compaq-Elite-8300-USDT:~$ env
CLUTTER_IM_MODULE=xim
CONDA_SHLVL=1
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.Z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:
CONDA_EXE=/home/william/anaconda3/bin/conda
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_MENU_PREFIX=gnome-
LANG=en_US.UTF-8
DISPLAY=:0
GNOME_SHELL_SESSION_MODE=ubuntu
COLORTERM=truecolor
USERNAME=william
CONDA_PREFIX=/home/william/anaconda3
XDG_VTNR=2
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
MANDATORY_PATH=/usr/share/gconf/ubuntu.mandatory.path
S_COLORS=auto
_CE_M=
XDG_SESSION_ID=2
USER=william
DESKTOP_SESSION=ubuntu
QT4_IM_MODULE=xim
TEXTDOMAINDIR=/usr/share/locale/
GNOME_TERMINAL_SCREEN=/org/gnome/Terminal/screen/4415aacb_f29d_41fc_969b_1ecfb25dfbd2
DEFAULTS_PATH=/usr/share/gconf/ubuntu.default.path
PWD=/home/william
HOME=/home/william
CONDA_PYTHON_EXE=/home/william/anaconda3/bin/python
TEXTDOMAIN=im-config
SSH_AGENT_PID=2421
QT_ACCESSIBILITY=1
XDG_SESSION_TYPE=x11
XDG_DATA_DIRS=/usr/share/ubuntu:/home/william/.local/share/flatpak/exports/share/:/var/lib/flatpak/exports/share/:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
_CE_CONDA=
XDG_SESSION_DESKTOP=ubuntu
GJS_DEBUG_OUTPUT=stderr
CONDA_PROMPT_MODIFIER=(base)
GTK_MODULES=gail:atk-bridge
WINDOWPATH=2
TERM=xterm-256color
SHELL=/bin/bash
VTE_VERSION=5202
QT_IM_MODULE=ibus
XMODIFIERS=@im=ibus
IM_CONFIG_PHASE=2
XDG_CURRENT_DESKTOP=ubuntu:GNOME
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GNOME_TERMINAL_SERVICE=:1.84
XDG_SEAT=seat0
SHLVL=1
GDMSESSION=ubuntu
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
LOGNAME=william
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
XDG_RUNTIME_DIR=/run/user/1000
XAUTHORITY=/run/user/1000/gdm/Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/etc/xdg
PATH=/home/william/anaconda3/bin:/home/william/anaconda3/condabin:/home/william/.local/bin:/home/william/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
CONDA_DEFAULT_ENV=base
GJS_DEBUG_TOPICS=JS ERROR;JS LOG
SESSION_MANAGER=local/william-HP-Compaq-Elite-8300-USDT:@/tmp/.ICE-unix/2324,unix/william-HP-Compaq-Elite-8300-USDT:/tmp/.ICE-unix/2324
LESSOPEN=| /usr/bin/lesspipe %s
GTK_IM_MODULE=ibus
_=/usr/bin/env

SGaist

Everything looks Ok...

Next test: can you install and test your code with your distribution provided PyQt5 ?

lcleve

@SGaist
The env results I sent before were for ubuntu 18.04. In retrospect, this may have complicated things unnecessarily, since our goal is is to work on ubuntu 20.10. So below is the env output for 20.10. Note that the username for 20.10 is jonathan. For the older version, it is william.

(base) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ env
SHELL=/bin/bash
SESSION_MANAGER=local/jonathan-HP-Compaq-Elite-8300-USDT:@/tmp/.ICE-unix/1707,unix/jonathan-HP-Compaq-Elite-8300-USDT:/tmp/.ICE-unix/1707
QT_ACCESSIBILITY=1
COLORTERM=truecolor
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/etc/xdg
XDG_MENU_PREFIX=gnome-
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
CONDA_EXE=/home/jonathan/anaconda3/bin/conda
_CE_M=
GNOME_SHELL_SESSION_MODE=ubuntu
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
XMODIFIERS=@im=ibus
DESKTOP_SESSION=ubuntu
SSH_AGENT_PID=1663
GTK_MODULES=gail:atk-bridge
PWD=/home/jonathan
LOGNAME=jonathan
XDG_SESSION_DESKTOP=ubuntu
XDG_SESSION_TYPE=x11
CONDA_PREFIX=/home/jonathan/anaconda3
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
XAUTHORITY=/run/user/1000/gdm/Xauthority
GJS_DEBUG_TOPICS=JS ERROR;JS LOG
WINDOWPATH=2
HOME=/home/jonathan
USERNAME=jonathan
IM_CONFIG_PHASE=1
LANG=en_US.UTF-8
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.webp=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:
XDG_CURRENT_DESKTOP=ubuntu:GNOME
VTE_VERSION=6200
CONDA_PROMPT_MODIFIER=(base)
GNOME_TERMINAL_SCREEN=/org/gnome/Terminal/screen/f4b8c0e5_b44e_4a61_8b22_3f26ba220048
GJS_DEBUG_OUTPUT=stderr
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_SESSION_CLASS=user
TERM=xterm-256color
_CE_CONDA=
LESSOPEN=| /usr/bin/lesspipe %s
USER=jonathan
GNOME_TERMINAL_SERVICE=:1.81
CONDA_SHLVL=1
DISPLAY=:0
SHLVL=1
QT_IM_MODULE=ibus
CONDA_PYTHON_EXE=/home/jonathan/anaconda3/bin/python
XDG_RUNTIME_DIR=/run/user/1000
CONDA_DEFAULT_ENV=base
XDG_DATA_DIRS=/usr/share/ubuntu:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
PATH=/home/jonathan/anaconda3/bin:/home/jonathan/anaconda3/condabin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
GDMSESSION=ubuntu
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
_=/usr/bin/env

I am not entirely clear on what you mean for the next test. The program was previously transferred from Mojave to 20.10 via flash drive and run from vscode without debugging. After testing the code on Mojave to double check that it was working, I ran the code on 20.10 and got the following:

source /home/jonathan/anaconda3/bin/activate
(base) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ source /home/jonathan/anaconda3/bin/activate
conda activate anno_env
(base) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ conda activate anno_env
(anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ /usr/bin/env /home/jonathan/anaconda3/envs/anno_env/bin/python /home/jonathan/.vscode/extensions/ms-python.python-2021.5.842923320/pythonFiles/lib/python/debugpy/launcher 40389 -- /home/jonathan/fullgui9JHC.gyp
qt.qpa.screen: QXcbConnection: Could not connect to display
Could not connect to any X display.
(anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$

SGaist

The idea is to use what is provided by Ubuntu rather than conda.

But before doing that, can you start your application with the QT_DEBUG_PLUGINS environment variable set to 1 ?

That will give you more information with what is happening with plugins.

lcleve

Based on what I found on web, I opened QtCreator: Tools-options-Environment-system-change. I added QT_DEBUG_PLUGINS=1, hit apply and ok. When I reopened the editor, the variable was there and set to 1. Re running the program as before yielded the same output in the vscode terminal. Should I look somewhere else ?

JonB

@lcleve
With that variable set you're supposed to get a whole bunch of output on stdout/stderr. I don't know about "vscode terminal". If you know how to run your Python script from a terminal you can set the variable there before running it and you should see the output.

lcleve

@SGaist Below are the results. This time the gui opened, but with the same distortions.

(base) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ conda activate anno_env
(anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ export QT_DEBUG_PLUGINS=1
(anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ env
SHELL=/bin/bash
SESSION_MANAGER=local/jonathan-HP-Compaq-Elite-8300-USDT:@/tmp/.ICE-unix/1707,unix/jonathan-HP-Compaq-Elite-8300-USDT:/tmp/.ICE-unix/1707
QT_ACCESSIBILITY=1
COLORTERM=truecolor
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/etc/xdg
XDG_MENU_PREFIX=gnome-
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
CONDA_EXE=/home/jonathan/anaconda3/bin/conda
_CE_M=
GNOME_SHELL_SESSION_MODE=ubuntu
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
XMODIFIERS=@im=ibus
DESKTOP_SESSION=ubuntu
SSH_AGENT_PID=1663
GTK_MODULES=gail:atk-bridge
PWD=/home/jonathan
LOGNAME=jonathan
XDG_SESSION_DESKTOP=ubuntu
XDG_SESSION_TYPE=x11
CONDA_PREFIX=/home/jonathan/anaconda3/envs/anno_env
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
XAUTHORITY=/run/user/1000/gdm/Xauthority
GJS_DEBUG_TOPICS=JS ERROR;JS LOG
WINDOWPATH=2
HOME=/home/jonathan
USERNAME=jonathan
IM_CONFIG_PHASE=1
LANG=en_US.UTF-8
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.webp=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:
XDG_CURRENT_DESKTOP=ubuntu:GNOME
VTE_VERSION=6200
CONDA_PROMPT_MODIFIER=(anno_env)
GNOME_TERMINAL_SCREEN=/org/gnome/Terminal/screen/c167ca7d_7f2e_486d_97ba_108c9f87d984
GJS_DEBUG_OUTPUT=stderr
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_SESSION_CLASS=user
TERM=xterm-256color
_CE_CONDA=
LESSOPEN=| /usr/bin/lesspipe %s
USER=jonathan
GNOME_TERMINAL_SERVICE=:1.81
CONDA_SHLVL=2
DISPLAY=:0
SHLVL=1
QT_IM_MODULE=ibus
QT_DEBUG_PLUGINS=1
CONDA_PYTHON_EXE=/home/jonathan/anaconda3/bin/python
XDG_RUNTIME_DIR=/run/user/1000
CONDA_DEFAULT_ENV=anno_env
XDG_DATA_DIRS=/usr/share/ubuntu:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
PATH=/home/jonathan/anaconda3/envs/anno_env/bin:/home/jonathan/anaconda3/bin:/home/jonathan/anaconda3/condabin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
GDMSESSION=ubuntu
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
CONDA_PREFIX_1=/home/jonathan/anaconda3
_=/usr/bin/env
(anno_env) jonathan@jonathan-HP-Compaq-Elite-8300-USDT:~$ python3 /home/jonathan/fullgui9JHC.gyp
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqeglfs.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqeglfs.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"eglfs"
]
},
"className": "QEglFSIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqminimal.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqminimal.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimal"
]
},
"className": "QMinimalIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqminimalegl.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqminimalegl.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimalegl"
]
},
"className": "QMinimalEglIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqoffscreen.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqoffscreen.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"offscreen"
]
},
"className": "QOffscreenIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqvnc.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqvnc.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"vnc"
]
},
"className": "QVncIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqxcb.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqxcb.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"xcb"
]
},
"className": "QXcbIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/platforms" ...
loaded library "/home/jonathan/anaconda3/envs/anno_env/plugins/platforms/libqxcb.so"
loaded library "Xcursor"
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations" ...
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations/libqxcb-egl-integration.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations/libqxcb-egl-integration.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5",
"MetaData": {
"Keys": [
"xcb_egl"
]
},
"className": "QXcbEglIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("xcb_egl")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations/libqxcb-glx-integration.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations/libqxcb-glx-integration.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5",
"MetaData": {
"Keys": [
"xcb_glx"
]
},
"className": "QXcbGlxIntegrationPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("xcb_glx")
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/xcbglintegrations" ...
loaded library "/home/jonathan/anaconda3/envs/anno_env/plugins/xcbglintegrations/libqxcb-glx-integration.so"
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts" ...
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so, metadata=
{
"IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
"MetaData": {
"Keys": [
"compose",
"xim"
]
},
"className": "QComposePlatformInputContextPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("compose", "xim")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so, metadata=
{
"IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
"MetaData": {
"Keys": [
"ibus"
]
},
"className": "QIbusPlatformInputContextPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("ibus")
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libqtvirtualkeyboardplugin.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libqtvirtualkeyboardplugin.so, metadata=
{
"IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
"MetaData": {
"Keys": [
"qtvirtualkeyboard"
]
},
"className": "QVirtualKeyboardPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("qtvirtualkeyboard")
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/platforminputcontexts" ...
loaded library "/home/jonathan/anaconda3/envs/anno_env/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so"
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/styles" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/styles" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/iconengines" ...
QFactoryLoader::QFactoryLoader() looking at "/home/jonathan/anaconda3/envs/anno_env/plugins/iconengines/libqsvgicon.so"
Found metadata in lib /home/jonathan/anaconda3/envs/anno_env/plugins/iconengines/libqsvgicon.so, metadata=
{
"IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
"MetaData": {
"Keys": [
"svg",
"svgz",
"svg.gz"
]
},
"className": "QSvgIconPlugin",
"debug": false,
"version": 329991
}

Got keys from plugin meta data ("svg", "svgz", "svg.gz")
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/iconengines" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/plugins/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "/home/jonathan/anaconda3/envs/anno_env/bin/accessible" ...

SGaist

Can you show the distortion you get ?

I still suggest that you try to run your application with the Ubuntu provided PyQt5 to ensure it's something related to your conda installation and not your system.

lcleve

@SGaist I did that earlier today. Specifically, I used "conda create" to create an env with no specific packages specified. I then opened anaconda-navigator and added a single package, Pandas. Using the terminal on the activated env, I used "pip install pyqt5". At the command prompt of the activated env, I entered python app-path. The interface opened with distortions as follows:

The text on buttons extends beyond the bounds of the buttons.
It is impossible to click on the title bar and drag the window.
No buttons or menu items work except for a "Start Here" button that pops up a message dialog.
Previously, I had thought that the window was larger than 1920x1080, but the size is correct.
If I kill the terminal, then the window can be moved by clicking and dragging the title bar. It can then be closed with the window close button.

Sorry not to enclose a picture of the screen, but I am using an apple keyboard, which ,according to my knowledge, does not have a print screen button.

In response to an above post, I installed Qt6. Do you think it might be worthwhile installing pyqt6 and creating an environment as described above?

Thanks very much for your patience.

lcleve

lcleve

Did more work to completely eliminate conda and vs code as you suggested.
Used python to create a virtual env.
pip installed pyqt5.
Tested it with simple hello world app and it worked.
pip installed pandas.
at the env prompt entered python myapp path.
Initially it worked but with window problems described earlier.
Re edited fonts with new Qt6 designer and font problems disappeared. My recollection is that I did this earlier. Don't know why it didn't work before.
Changed min win size to 0x0. Now the window close button became visible (was off screen before) and the window could be closed.

Evidently, there is some problem with conda. I was reluctant to abandon conda since in the past it was the only way we could get pandas installed with some other packages. Fortunately pandas and pyqt5 are coinstallable with the standard approach.

Many thanks to all for suggestions and patience with a newcomer.

lcleve