Ubuntu kernel upgrade borked my machine
: Martin Holmes
Minutes: 120
I’ve been running my new machine with Ubuntu 21.10 to get a preview of the next LTS, but that proved to have been a mistake today; booting first thing in the morning, I was unable to get past the decryption of the boot drive. After an hour and a half of messing around trying to figure it out, I determined that it was caused by the new kernel installed yesterday. Eventually I was able to get to a grub menu and boot the old kernel, which solved the problem, but what made it more difficult was what appears to be a bug in the UEFI bios which prevented me from setting a USB stick as the first boot drive.
For the moment, what I’ve done is to extend the grub menu timeout from 0 to 5. I’ll add my /etc/default/grub file here, because it also contains the special boot param that’s the workaround for the Intel graphics issue that hobbled this machine when we got it.
# If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 GRUB_TIMEOUT_STYLE=menu GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.force_probe=4680" GRUB_CMDLINE_LINUX="" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1"