On Mon, 11 Sep 2023 14:10:31 -0700 John Jason Jordan <joh...@gmx.com> dijo:
>On Mon, 11 Sep 2023 13:37:15 -0700 >wes <p...@the-wes.com> dijo: > >>On Mon, Sep 11, 2023 at 1:32 PM John Jason Jordan <joh...@gmx.com> >>wrote: >>> Normally release is done with the Right-Ctrl key, but if you're in >>> the host and the guest has exclusive control of mouse and keyboard, >>> you have no Right-Ctrl key > >>something is not right here. there should never be a case where the >>virtualbox guest can prevent virtualbox from acting on the "host key" >>(right-ctrl by default, as you noted). I don't have any specific >>suggestions at this point, but I would encourage you to peruse through >>the settings related to this to see if anything sticks out. > >I currently have three other virtual machines (all Windows), and in the >past I have had numerous others. I have never had this happen before, >so my guess is that you are right, 'something is not right here.' I >will poke at this more later today. OK, I have more information, although I don't have a fix. I thought the problem had just disappeared, but today it happened again. And while things were locked up I spent an hour trying different things to see if I could repair whatever was wrong. One of the things I discovered was that all running programs were still working, e.g., I was downloading a distro by qBittorrent, whose window was still on the screen, and I suddenly noticed numbers shifting as the download continued. In qBittorrent I tried moving around inside the window with the tab key, moving to different buttons to click on and it worked, except clicking failed. Eventually I discovered that the keyboard was fully functional unless I tried to minimize or maximize a window, or start or stop a program, or get to a terminal. The mouse cursor was working fine, but no clicks were possible with any of the keys or scroll wheel. At the end I came to the conclusion that what had gone wrong was that the window manager had been killed. On the net via my phone I read about key commands to restart the window manager, but none of them worked. I also discovered that it only happens when I minimize the window that is holding the Debian guest OS. I hadn't done this for a couple days, which is why I thought that the problem was resolved, but today I did it again, and sure enough, instantly I had no window manager. And since I never found a solution I'm still stuck using the power button. Well, at least I've made some progress. And now I can easily replicate the problem for testing purposes.