Public bug reported: I use Ubuntu Mate 18.04. When I press one of the mouse buttons (frequently the middle one I remember) and one of the Ctrl/Shift/Alt keys on keyboard at the same time in a program, the program keeps its control state when I finish hold down all buttons (sometimes). You can close a desktop window and you can start a new program (by pressing an icon in the Mate panel only). Neither the Mate menu is reachable nor the desktop's context menu. In the Firefox webbrowser the menus are reachable. All keyboard inputs are disabled in all programs. When I press the logout button (I put an icon to the Mate panel, otherwise I couldn't log out) and start the desktop again after log in, all is working well (until...). Maybe it's something with the kbd/mouse event managing in Mate, I don't know. I started an X-session with the xterm only and then mate-session on its command line for displaying debug messages. None of the messages warn about this strange behavior.
** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1748447 Title: Mate session desktop loses keyboard and mouse control sometimes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1748447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs