RightCrtl-F worked once to make the X11 go from full screen to window mode, but then everything was unresponsive except moving around the mouse.ĬentOS 6.8 x86_64 host O.S., all RPMs current. Symptom was all focus was lost, I could move my mouse around but it wouldn't then highlight a window. I was cutting and pasting between them at the time and probably crowding the RAM with so much stuff at once. My config is three monitors, Win 7 VM using the right two, X11 VM on the left one. vboxnetflt: 30 out of 80722 packets were not sent (directed to host)
vboxnetflt: 0 out of 55929 packets were not sent (directed to host) VBoxNetFlt: attached to 'enp6s0' / xx:xx:xx:xx:xx:xx vboxpci: IOMMU not found (not registered)
vboxdrv: Successfully loaded version 5.1.14 (interface 0x00280000) vboxdrv: TSC mode is Invariant, tentative frequency 3655034147 Hz I'm not sure why the VB runtime is 5.0.32 and the GUI is 5.1.14 I did a clean install a couple of weeks ago from the virtualbox dot org site and that has to be what was installed at the time. Host: LinuxMint 18, AMD Phenom II X4 965, 24Gb RAM, 512Gb SSD I have attached a few pertinent lines below from my LinuxMint dmesg log, which shows a segfault happening on two different occasions since my last reboot of Linux. The segfault happens much later, not immediately. I can correct that by maximizing, then unmaximizing the second virtual monitor. I have to resize the window manually, but then the bottom VB status line doesn't get positioned at the bottom like it should be. One thing that changed that might be related is that VirtualBox hasn't been restoring the window size of the second virtual monitor when I boot the Guest OS.
The really bad thing about this is that it aborts my Windows 7 VM, and aborts X11 on the LinuxMint host, so ALL of my work in both the guest AND the host is lost. Over the past couple of days, I have seen this segfault several times as well.
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