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  • Boot hangs after kernel update (kubuntu 20.04)

    From Paulo da Silva@21:1/5 to All on Wed Jul 13 04:28:15 2022
    Hi!

    I have installed a hwe kernel in my kubuntu 20.04. I needed to do that
    because the standard kernel caused random freezes.
    It has been working pretty well for long time even after changing a
    couple of kernel versions, the last working one being 5.13.0.
    Now there came another version 5.15.0. After a normal update and reboot
    the system hangs at "Loading initial ramdisk"!
    Booting 5.13.0 still works fine.

    I have tried to rebuild initramfs, reinstall the nvidia drivers,
    update-grub. No success :-(

    Any suggestions?

    Thanks
    Paulo

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  • From Marco Moock@21:1/5 to All on Wed Jul 13 07:36:17 2022
    Am Mittwoch, 13. Juli 2022, um 04:28:15 Uhr schrieb Paulo da Silva:

    Now there came another version 5.15.0. After a normal update and
    reboot the system hangs at "Loading initial ramdisk"!
    Booting 5.13.0 still works fine.

    Seems to be a problem with that kernel. What nvidia GPU and what driver?
    Does it also happen with nouveau?

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  • From Andrei Z.@21:1/5 to Paulo da Silva on Wed Jul 13 10:11:33 2022
    Paulo da Silva wrote:
    Hi!

    I have installed a hwe kernel in my kubuntu 20.04. I needed to do that because the standard kernel caused random freezes.
    It has been working pretty well for long time even after changing a
    couple of kernel versions, the last working one being 5.13.0.
    Now there came another version 5.15.0. After a normal update and reboot
    the system hangs at "Loading initial ramdisk"!
    Booting 5.13.0 still works fine.

    I have tried to rebuild initramfs, reinstall the nvidia drivers,
    update-grub. No success :-(

    Any suggestions?

    Thanks
    Paulo

    Was "Loading initial ramdisk" followed by the LUKS prompt?

    https://bbs.archlinux.org/viewtopic.php?pid=2001959#p2001959

    https://unix.stackexchange.com/questions/671087/ubuntu-21-04-hangs-at-loading-initial-ramdisk-after-kernel-update-with-luks

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  • From Paul@21:1/5 to Paulo da Silva on Wed Jul 13 11:15:11 2022
    On 7/12/2022 11:28 PM, Paulo da Silva wrote:
    Hi!

    I have installed a hwe kernel in my kubuntu 20.04. I needed to do that because the standard kernel caused random freezes.
    It has been working pretty well for long time even after changing a couple of kernel versions, the last working one being 5.13.0.
    Now there came another version 5.15.0. After a normal update and reboot the system hangs at "Loading initial ramdisk"!
    Booting 5.13.0 still works fine.

    I have tried to rebuild initramfs, reinstall the nvidia drivers, update-grub. No success :-(

    Any suggestions?

    Thanks
    Paulo

    I would run "memtest" and make sure the RAM is good.

    Paul

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  • From Paulo da Silva@21:1/5 to All on Wed Jul 13 18:27:45 2022
    Às 08:11 de 13/07/22, Andrei Z. escreveu:
    Paulo da Silva wrote:
    Hi!

    I have installed a hwe kernel in my kubuntu 20.04. I needed to do that
    because the standard kernel caused random freezes.
    It has been working pretty well for long time even after changing a
    couple of kernel versions, the last working one being 5.13.0.
    Now there came another version 5.15.0. After a normal update and
    reboot the system hangs at "Loading initial ramdisk"!
    Booting 5.13.0 still works fine.

    I have tried to rebuild initramfs, reinstall the nvidia drivers,
    update-grub. No success :-(

    Any suggestions?

    Thanks
    Paulo

    Was "Loading initial ramdisk" followed by the LUKS prompt?

    https://bbs.archlinux.org/viewtopic.php?pid=2001959#p2001959

    https://unix.stackexchange.com/questions/671087/ubuntu-21-04-hangs-at-loading-initial-ramdisk-after-kernel-update-with-luks


    The MODULES=dep procedure, as described in your second link, fixed the
    problem :-)
    THANK YOU.
    Thank you also to all who responded.
    Paulo

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