Results 1 to 4 of 4

Thread: Weird boot issues

  1. #1
    Join Date
    Nov 2020
    Beans
    2

    Weird boot issues

    Hi all,

    I have a Dell laptop on which I have been running Ubuntu since 12.04 with no problems at all. Currently it is on 20.04. Everything has been fine until very recently (early November) I started to get weird boot problems, and I was wondering if this sounds like something which is 'known' or whether I might have a hardware problem!

    Basically, I can 'suspend' and 'resume' and that works fine, and a 'restart' also works OK. The problem is when doing a 'cold start' from a power-off condition I intermittently get a failed boot which leaves me with a non-functioning grub menu. I have managed to find a work-around which may point toward whatever the problem might be: If I type 'c' to get a command line, I get the grub> prompt, and if I then type 'exit' it boots to some kind of hidden Microsoft thing that asks for a 'Live PIN'. If I hit 'Restart' from *this* screen then everything boots properly and I'm back in Ubuntu!

    If anyone wants me to provide more details I'd be happy to do so - just let me know what I should run to diagnose the problem. Kind of as an aside, is there some relatively easy way to 're-write' all the boot info, in case this has somehow gotten corrupted? I have tried 'sudo update-grub' which runs fine but makes no difference.

    Thanks for any assistance!
    Keith

  2. #2
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Weird boot issues

    Since from older installs, is this a BIOS install, not UEFI?

    The sudo update-grub just updates menu by scanning system for other installs.
    You have to do a full reinstall of grub to update grub in MBR (or ESP for UEFI).

    Did you update BIOS/UEFI? If an update is still available you should update it.
    It may be a setting in BIOS. Either an update or clicking on use defaults changes settings which you often then need to reset to run Linux correctly.
    I have 7 or 8 settings on one system that I have to redo after every UEFI update. Some required & some optional. With BIOS all settings were reset, but UEFI remembers some settings.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #3
    Join Date
    Nov 2020
    Beans
    2

    Re: Weird boot issues

    Thanks for that, particularly the link to the "UEFI installing tips" post - very interesting.

    I mis-spoke in my original message though. I have been using Ubuntu since 12.04, but this is a relatively new laptop which was on a UEFI boot of 18.04 then got upgraded to 20.04.

    I'm going to sit down one evening with that link you sent me and try and puzzle this out. I think the first thing I need to be able to do is to 'refresh' the EFI boot info somehow. If that make the problem go away then we're done!

    Thanks again for the feedback.
    Keith

  4. #4
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Weird boot issues

    Vendor has a support site with UEFI updates.
    If you have Windows that will often run updates also.
    Note that UEFI updates reset some settings, I keep a list, one system needs a lot, the other just a few changes.

    With old BIOS all settings were changed to default, but UEFI remembers boot & depending on system some settings.

    https://github.com/rhboot/fwupdate/b...ster/README.md
    https://fwupd.org/vendorlist &
    https://fwupd.org/lvfs/devicelistSome new systems now will update from Linux.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •