QT error when trying to launch Anki from a termux Ubuntu install

SGaist

Ok, then are you trying to run that application from the root user ?

prehmo

@JonB said in QT error when trying to launch Anki from a termux Ubuntu install:

@prehmo
I may be mistaken but I believe the "authorization" failures are because you are trying to run as root (from the shell prompt)? Xorg doesn't like that.

@SGaist no, when I try to run it from root i get this error instead.

root@localhost:~# anki
qt: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'

(process:11914): Gtk-WARNING **: 11:12:47.469: Locale not supported by C library.
    Using the fallback 'C' locale.

(python3:11914): dbind-WARNING **: 11:12:47.540: AT-SPI: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
mpv not found, reverting to mplayer
[11914:11914:0717/111247.916695:ERROR:zygote_host_impl_linux.cc(90)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.

Btw I tried both using terminal from termux and from the terminal emulator of the gui itself and get the same errors.´

PS: As you can see, I no longer get the authorization error (you can see it in the 3rd codebox of the OP)

JonB

@prehmo
I don't really follow. Your earlier post showed

root@localhost:~# echo $XDG_SESSION_TYPE
x11

So you were doing that as root, hence what we asked...?

prehmo

@JonB

Let me rephrase to be more clear

The system was created with no user, but I created one the second i encountered this error:

root@localhost:~# anki
qt: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'

(process:11914): Gtk-WARNING **: 11:12:47.469: Locale not supported by C library.
    Using the fallback 'C' locale.

(python3:11914): dbind-WARNING **: 11:12:47.540: AT-SPI: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
mpv not found, reverting to mplayer
[11914:11914:0717/111247.916695:ERROR:zygote_host_impl_linux.cc(90)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.

Then I tried as user and found this error:

Authorization required, but no authorization protocol specified
qt: could not connect to display :1
qt: Could not load the Qt platform plugin "xcb" in "" even though it was found.
qt: 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, xcb.

Aborted

And after following some advice of that other thread here: https://forum.qt.io/topic/111553/solved-qt-qpa-plugin-could-not-find-the-qt-platform-plugin-xcb-in/3

I no longer get the authorization error, and instead of display :1 i get display:0 error.

prem@localhost:~$ pyenv/bin/anki
Preparing to run...
  File "/home/prem/pyenv/bin/anki", line 8, in <module>
    sys.exit(run())
  File "/home/prem/pyenv/lib/python3.10/site-packages/aqt/init.py", line 489, in run
    _run()
  File "/home/prem/pyenv/lib/python3.10/site-packages/aqt/init.py", line 563, in _run
    pmLoadResult = pm.setupMeta()
  File "/home/prem/pyenv/lib/python3.10/site-packages/aqt/profiles.py", line 133, in setupMeta
    res = self._loadMeta()
  File "/home/prem/pyenv/lib/python3.10/site-packages/aqt/profiles.py", line 413, in _loadMeta
    traceback.print_stack()
resetting corrupt _global
Qt warning: could not connect to display :0 
Qt info: Could not load the Qt platform plugin "xcb" in "" even though it was found. 
Qt fatal: 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, xcb.
 
Aborted

The way GNU/Linux on top of android runs is you start the systme thru Termux and after that you start a vcnsession with Tigervnc and then you view the gui thru the app vnc viewer.

I also noticed that there is no QT folder inside of usr/lib

JonB

@prehmo said in QT error when trying to launch Anki from a termux Ubuntu install:

Qt warning: could not connect to display :0

I only know that once you get this error you will not get any further, and you will get the qt: Could not load the Qt platform plugin "xcb" in "" even though it was found. message after it.

I know nothing about Android or Termux etc., so you will have to await someone on that.

prehmo

bumping.

SGaist

Can you explain you exact setup ?

It started from an Ubuntu issue and now you are writing about VNC and Android.

prehmo

@SGaist

Maybe i didn't explain myself good enough.

Device: Mi Pad 5 running android 13 Miui 14

On top of it: Ubuntu XFCE 22.04 installed thru Termux based on a script from Andronix.

The way GNU/Linux on top of android runs is you start the systme thru Termux and after that you start a vcnsession with Tigervnc and then you view the gui thru the app vnc viewer.

I also noticed that there is no QT folder inside of usr/lib

SGaist

And you are developing inside termux ?

prehmo

@SGaist I'm not developing, i'm just trying to launch Anki. I tried in Termux and in the gui Terminal emulator and got the same result.

SGaist

And you are really sure your have Xorg up and running ?

detoxagent

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