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Thread: New 20.04 install hangs on re-boot; can't reboot

  1. #1
    Join Date
    Oct 2009
    Location
    New York City
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    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Question New 20.04 install hangs on re-boot; can't reboot

    I have two new 20.04.3 installs (Ubuntu-MATE) on a newly built desktop workstation. One is on a 2.5-inch SSD, the other on an nvme SSD.

    If I do a "Restart" from either, it appears as if a restart will happen, but it just hangs.

    The computer does not restart, does not shut down, it just goes black, and I have to press the reset button.

    The same thing happens if I make any change in the UEFI/BIOS settings. When I save the changes, there is no shutdown and no reboot, just a hang, and I have to press the reset button.

    (The motherboard's Q-codes, after quickly flashing through a bunch of numbers & letters, just go back to "AA" during the attempted reboot, indicating nothing useful.)

    The motherboard is Asus ROG Crosshair Hero VIII (WiFi); kernel 5.11.0-37, AMD Ryzen 7 3800XT CPU; GPU is Gigabyte GeForce RTX 3060, Nvidia driver 470.63.01.

    Would anyone have a clue as to where I might start troubleshooting for this?

    I'll provide more info re my system if needed. (System info in my sig below is my old machine, not the new one with the reboot problem.)
    Last edited by watchpocket; October 4th, 2021 at 06:36 PM.
    CPU: AMD Ryzen 7 3800XT Mobo: Asus ROG Crosshair VIII Hero wifi
    Drives: 2 1TB Sabrent Rocket 4 Plus; 1 SanDisk Ultra II 960GB SSD
    Graphics: NVIDIA Gigabyte GeForce RTX 3060
    RAM: 4x 32-GB G.SKILL. I use Vim not gedit; Zsh not Bash

  2. #2
    Join Date
    Oct 2009
    Location
    New York City
    Beans
    Hidden!
    Distro
    Ubuntu Mate 20.04 Focal Fossa

    Re: New 20.04 install hangs on re-boot; can't reboot

    SOLVED: I removed the CMOS battery on the motherboard, waited one minute, and put it back in. Problem solved.
    CPU: AMD Ryzen 7 3800XT Mobo: Asus ROG Crosshair VIII Hero wifi
    Drives: 2 1TB Sabrent Rocket 4 Plus; 1 SanDisk Ultra II 960GB SSD
    Graphics: NVIDIA Gigabyte GeForce RTX 3060
    RAM: 4x 32-GB G.SKILL. I use Vim not gedit; Zsh not Bash

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