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Thread: [lubuntu] 18.04: computer refuses to accept password after getting back from sleep

  1. #1
    Join Date
    Jun 2007
    Beans
    7

    [lubuntu] 18.04: computer refuses to accept password after getting back from sleep

    I have the same issue explained in this closed (but unsolved) thread (https://ubuntuforums.org/showthread....2349236&page=2)

    I have the following configuration:

    - Intel NUC NUC6CAYH (Celeron J3455 1.5 GHz, HD Graphics 500, 8 Gb RAM, 128 GB SSD)
    - Logitech Wireless Touch K400 keyboard
    - A projector connected via HDMI
    - Lubuntu 18.04 (installed via Ubuntu Server + $ sudo apt-get install lubuntu-desktop)
    - The OS is up-to-date with the latest updates

    Since a couple of weeks it started giving me this issue after getting back from sleep.
    It worked flawlessly for two years.
    Very static and minimal configuration, I didn't install any new app lately.

    Issue:

    1. I start the computer and login into it just fine;
    2. I use it for a couple of hours;
    3. I click on Suspend;
    4. The next day I click on the power button;
    5. The screen lock popups asking for password;
    6. I type in the passwords multiple times, no luck.

    I need every time to force reboot the machine via reset button.

    Any idea?
    Should I open a bug on launchpad?

    Thanks!
    Last edited by eldino; September 18th, 2019 at 11:51 AM. Reason: adapted subject to the subject style in use in the forum

  2. #2
    Join Date
    Aug 2017
    Location
    melbourne, au
    Beans
    180
    Distro
    Lubuntu Development Release

    Re: [lubuntu] 18.04: computer refuses to accept password after getting back from slee

    Firstly I'd check the keyboard is working/responding (eg. does CTRL+ALT+F4 switch to terminal 4? when it's suspended). When you hit RESET are you doing this because none of the keys are working, ie. you cannot use SysRq+REISUB to safely reboot rather than hardware reset?

    I just booted a Lubuntu 18.04 LTS box; once booted I suspended it. On waking, it asked me for password - but I could switch to terminal (CTRL+ALT+F4), and back to GUI without issue -- it's this I'm asking you to check. I'm betting I could use SysRq keys to reboot without logging back in, but didn't test that.

  3. #3
    Join Date
    Jun 2007
    Beans
    7

    Re: [lubuntu] 18.04: computer refuses to accept password after getting back from slee

    @guiverc
    Thanks for your answer

    I think the keyboard is working fine yes: as I said I'm able to type-in the password just fine after the wake up.
    But once I do it, it returns "Authentication Failed".

    I'll try to switch to the console and see what happens
    I'm pushing the RESET button for commodity, but I'll try the reisub option as well.

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