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Thread: 16.04: Alt+tab keyboard shortcut crashes system

  1. #1
    Join Date
    Oct 2010
    Location
    Dublin, Ireland
    Beans
    256
    Distro
    Ubuntu 18.04 Bionic Beaver

    Question 16.04: Alt+tab keyboard shortcut crashes system

    I have gotten used to not using alt+tab to switch program but I would like to start using it again, instead of using the less functional alt+¬, or manually navigating to docky to select the specific window of the specific program I want to display.

    This because when I use alt+tab, often my desktop will freeze. I know at least sometimes alt+F2, r, and enter does not resolve, it, REISUB may also not work and I will have to hard reset.

    I searched for a fix before but could not find, is there one please?

    Ubuntu 16.04, Gnome 3.28.2.

  2. #2
    Join Date
    Oct 2010
    Location
    Dublin, Ireland
    Beans
    256
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: 16.04: Alt+tab keyboard shortcut crashes system

    Bump.

  3. #3
    Join Date
    May 2008
    Beans
    534
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: 16.04: Alt+tab keyboard shortcut crashes system

    I do not know why your Alt+Tab is misbehaving but I can help you with a link about REISUB.

    Ubuntu does not ship with REISUB fully enabled.

    Here is a method to enable the process by editing a file:-

    Code:
    sudo nano /etc/sysctl.d/10-magic-sysrq.conf
    Then change the number in line 26 from 176 to 244 i.e. kernel.sysrq = 244

    I found the solution at this site https://digitalfortress.tech/debug/w...buntu-freezes/ and the information was in section 3.

    By the way, the last letter in the process B reboots your system, sometimes you may want to power off completely by substituting the B for an O

    Best wishes

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