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

SGaist

Hi and welcome to devnet,

Are you using Xorg or Wayland as windowing system ?

prehmo

@SGaist Hi Sgaist, thanks for your reply.

root@localhost:~# echo $XDG_SESSION_TYPE
x11

JonB

@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

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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