Missing the screen capture permission

[M-Emran]

trafficstars

What happened?

First when we open the app, it takes a full screenshot. when I click select an area to grab then a dialog box appears NorCamp is missing the permission for a screen capture. Grant the permission by clicking ok but when I click ok, the app take a full screenshot and closes.

How did you install NormCap?

FlatPak (Linux)

Operating System + Version?

Zorin OS (ubuntu 23)

[Linux only] Display Server (DS) + Desktop environment (DE)?

No response

Debug log output?*

emran@emran:~$ flatpak run --command=normcap com.github.dynobo.normcap -v debug
07:44:33 - INFO    - normcap:49 - Start NormCap v0.5.4
07:44:33 - DEBUG   - normcap:95 - Set XCURSOR_SIZE=24
07:44:33 - DEBUG   - normcap:100 - Set QT_QPA_PLATFORM=wayland
07:44:33 - DEBUG   - normcap.gui.tray:77 - System info:
{'normcap_version': '0.5.4', 'python_version': '3.11.9', 'cli_args': '/app/bin/normcap -v debug', 'is_briefcase_package': False, 'is_flatpak_package': True, 'is_appimage_package': False, 'platform': 'linux', 'desktop_environment': <DesktopEnvironment.GNOME: 1>, 'display_manager_is_wayland': True, 'pyside6_version': '6.6.1', 'qt_version': '6.6.1', 'qt_library_path': '/usr/share/runtime/lib/plugins, /app/lib/python3.11/site-packages/PySide6/Qt/plugins, /usr/bin', 'locale': 'DEFAULT', 'config_directory': PosixPath('/home/emran/.var/app/com.github.dynobo.normcap/config/normcap'), 'resources_path': PosixPath('/app/lib/python3.11/site-packages/normcap/resources'), 'tesseract_path': PosixPath('/app/bin/tesseract'), 'tessdata_path': PosixPath('/home/emran/.var/app/com.github.dynobo.normcap/config/normcap/tessdata'), 'envs': {'TESSDATA_PREFIX': '/app/share', 'LD_LIBRARY_PATH': ''}, 'screens': [Screen(left=0, top=0, right=1365, bottom=767, device_pixel_ratio=1.0, index=0, screenshot=None)]}
07:44:33 - DEBUG   - normcap.gui.settings:162 - Skip update of non existing setting (show_introduction: None)
07:44:33 - DEBUG   - normcap.gui.settings:162 - Skip update of non existing setting (cli_mode: False)
07:44:33 - DEBUG   - normcap.gui.settings:162 - Skip update of non existing setting (background_mode: False)
07:44:33 - DEBUG   - normcap.gui.settings:162 - Skip update of non existing setting (clipboard_handler: None)
07:44:33 - DEBUG   - normcap.gui.tray:394 - Another instance is already running. Sending capture signal.
07:44:33 - INFO    - normcap.gui.tray:610 - Exit normcap
07:44:33 - DEBUG   - normcap.gui.tray:611 - Debug images saved in /tmp/normcap
emran@emran:~$ ^C

[dynobo]

I confirm, that permission handling for Flatpak seems quite broken. Theoretically, when NormCap tries to access org.freedesktop.portal.Screenshot the first time, a system permission dialog should pop-up, but somehow it doesn't...

Probably needs some more investigation, into why this is the case and what could be done about it. Any help would be appreciated!

[creeper82]

I have the same problem and I've accidentally found a workaround: Open the file manager, navigate to /usr/share/applications, and open normcap (normcap.desktop) from there. In my case, it kinda ties the permission request to the Nemo file manager, as it says that Nemo wants to request a screenshot, and not the normcap app. But it works afterwards.

Note: I use GNOME, but I suppose the .desktop files location isn't tied to any specific DE?

Edit: sorry. I didn't fully read your issue. I think it's not related, but I will leave it anyway

[abrahamvg]

Hi @M-Emran, I am also running Zorin OS 17. I tried installing it by pip, flatpak, and AppImage and all of them gave me the same kind of error when I try to select the 'Share Area to Grab" option. It worked fine when I share the screenshot that is taken just after the app launches, i.e, the full screen screenshot, but didn't with the other options.

Error Received :

TimeoutError: Timeout when taking screenshot!
01:04:09 - ERROR   - normcap.screengrab.handlers.dbus_shell:48 - Failed move Window!
01:04:09 - ERROR   - normcap.screengrab.handlers.dbus_shell:49 - Screenshot is not allowed
01:04:09 - CRITICAL - normcap:148 - Uncaught exception!
Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/home/a/.local/lib/python3.10/site-packages/normcap/__main__.py", line 6, in <module>
    run()
  File "/home/a/.local/lib/python3.10/site-packages/normcap/app.py", line 102, in run
    app, tray = _prepare()
  File "/home/a/.local/lib/python3.10/site-packages/normcap/app.py", line 95, in _prepare
    tray = SystemTray(app, vars(args))
  File "/home/a/.local/lib/python3.10/site-packages/normcap/gui/tray.py", line 139, in __init__
    self._show_windows(delay_screenshot=delay_screenshot)
  File "/home/a/.local/lib/python3.10/site-packages/normcap/gui/tray.py", line 204, in _show_windows
    self._create_window(index)
  File "/home/a/.local/lib/python3.10/site-packages/normcap/gui/tray.py", line 543, in _create_window
    new_window.set_fullscreen()
  File "/home/a/.local/lib/python3.10/site-packages/normcap/gui/window.py", line 144, in set_fullscreen
    raise ValueError("Screenshot is missing on screen %s", self.screen_)

ValueError: ('Screenshot is missing on screen %s', Screen(left=0, top=0, right=2559, bottom=1439, device_pixel_ratio=1.0, index=0, screenshot=<PySide6.QtGui.QImage(null) at 0x7300ce078840>))

But right now it works on ''Share Area to Grab" about which even I do not know it got fixed :/ ( I remember it breaking earlier). Probably it didn't capture the initial screenshot for the application to work with.

I also wanted to ask how to pass the dialog box which shows :

It would help remove the manual step of clicking on share :/

[pbsds]

Workaround on GNOME wayland:

flatpak permission-set screenshot screenshot normcap yes

discovered in https://github.com/NixOS/nixpkgs/issues/351680