Hello, It appears with the release today (xpra v3.0.8-r25879) I've started getting an error:
(Xpra:37551): Gtk-CRITICAL **: 19:42:28.298: gtk_window_add_accel_group: assertion 'GTK_IS_WINDOW (window)' failed
I'm running Ubuntu 16.04, and everything was fine until today. On the client side, I'm running xpra v3.0.8-r25796 under OsX.
Here's all the output on the client side:
2020-03-31 20:05:42,820 running on Mac OS X 10.15.3 2020-03-31 20:05:43,887 GStreamer version 1.16.2 for Python 3.8.2 64-bit 2020-03-31 20:05:44,126 OpenGL_accelerate module loaded 2020-03-31 20:05:44,151 Using accelerated ArrayDatatype /Applications/Xpra.app/Contents/Resources/lib/python/numpy/ma/core.py:4466: SyntaxWarning: "is" with a literal. Did you mean "=="? if self.shape is (): /Applications/Xpra.app/Contents/Resources/lib/python/xpra/client/gl/gtk3/nativegl_client_window.py:13: Warning: g_object_get_qdata: assertion 'G_IS_OBJECT (object)' failed return GLContext().check_support(force_enable) #pylint: disable=not-callable /Applications/Xpra.app/Contents/Resources/lib/python/xpra/client/gl/gtk3/nativegl_client_window.py:13: Warning: g_object_set_qdata_full: assertion 'G_IS_OBJECT (object)' failed return GLContext().check_support(force_enable) #pylint: disable=not-callable /Applications/Xpra.app/Contents/Resources/lib/python/xpra/client/gl/gtk3/nativegl_client_window.py:13: Warning: g_object_unref: assertion 'G_IS_OBJECT (object)' failed return GLContext().check_support(force_enable) #pylint: disable=not-callable 2020-03-31 20:05:46,614 OpenGL enabled with AMD Radeon Pro 450 OpenGL Engine 2020-03-31 20:05:51,826 Connected (version 2.0, client OpenSSH_7.6p1) 2020-03-31 20:05:52,574 loaded RSA private key from 'XXXXl' 2020-03-31 20:05:52,909 Authentication (publickey) successful! 2020-03-31 20:06:09,206 keyboard settings: layout=us 2020-03-31 20:06:09,207 Warning: invalid screen size 8532x9615mm 2020-03-31 20:06:09,207 using 330x206 mm 2020-03-31 20:06:09,213 desktop size is 1680x1050 with 1 screen: 2020-03-31 20:06:09,213 pacific-5.local (330x206 mm - DPI: 129x129) workarea: 1680x947 at 0x23 2020-03-31 20:06:09,213 monitor 2 /Applications/Xpra.app/Contents/Resources/lib/python/xpra/platform/darwin/osx_tray.py:91: Warning: invalid cast from 'GtkMenuBar' to 'GtkWindow' self.macapp.set_menu_bar(self.menu) (Xpra:38892): Gtk-CRITICAL **: 20:06:09.288: gtk_window_add_accel_group: assertion 'GTK_IS_WINDOW (window)' failed 2020-03-31 20:06:09,364 Error: failed to receive anything, not an xpra server? 2020-03-31 20:06:09,364 could also be the wrong protocol, username, password or port 2020-03-31 20:06:09,364 or the session was not found 2020-03-31 20:06:09,364 Connection lost
(Xpra:37551): Gtk-CRITICAL **: 19:42:28.298: gtk_window_add_accel_group: assertion 'GTK_IS_WINDOW (window)' failed
This one is not new.
Error: failed to receive anything, not an xpra server?
This is the real problem.
I assume that you're connecting via ssh?
In which case this bug is a duplicate of #2693. Just update your server package again and you should be OK.
There are also updated macos builds, but those won't make a difference unless you use macos as a shadow server via ssh.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2695