r/Ubuntu • u/Brassens71 • 15h ago

System won't start after 26.04.01 upgrade from 24.04LTS

So... last night I decided to upgrade from 24.04 to 26.04. My initial idea was to stay up until the whole thing was done but the progress bar was advancing painfully slowly so I went to bed. And this morning I woke up to things not working.

When I tried to restart the PC via the power switch, here's what I saw:

  1. grub worked, and the USB system worked (this will be relevant), so I selected Ubuntu.

  2. as the system started, USB stopped working (the lights on my keyboard switched off)

  3. a screen appeared, "waiting for cryptfs..." instead of the prompt for the cryptfs password

  4. the screen blanked and I got a initramfs prompt, but USB doesn't work so I can't type anything.

Fortunately I have a Windows disk I can start from so I could come post this on reddit, but... how fscked am I w/r/t my Linux installation?..

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u/Tall_Fly5565 14h ago

Oof, that's a rough morning. The USB dropping out right when you need to type the cryptfs password is the killer here. Since you can get into grub, try editing the boot entry (hit 'e' on the Ubuntu line) and adding `iommu=soft` or `usbcore.autosuspend=-1` to the linux line. Might keep the ports alive long enough to get the prompt.

If that doesn't work, boot from a live USB, chroot in, and check what the upgrade actually did to your initramfs. Sometimes an interrupted upgrade leaves the modules half-configured and the keyboard driver doesn't get included. You'd need to rebuild it with `update-initramfs -u` while chrooted. Not the end of the world but definitely a project for a day off.

1

u/Brassens71 13h ago

Tried adjusting the grub parameters, but the score.auto suspend=-1 was already present and saw amd_iommu=1 was there which is correct. Removed the “quiet” parameter to see more debug messages and I am noticing a lot of “loading of module with unavailable key is rejected” messages. Guess I’ll try removing all the usb cables besides the keyboard and see if that helps…

1

u/Brassens71 13h ago

Nope, but I noticed that when I switch keyboards I get that “loading of module with unavailable key is rejected”, so it looks like a problem with the usb driver… grrr.

1

u/TheDavii 11h ago

Are you sure it isn't ecryptfs ?

I ran into a similar problem with a 24.04 -> 26.04 upgrade recently. ecryptfs was deprecated years ago (2019?) and they finally removed it from the 26.04.

To get my data back, I had to boot with a 24.04 USB, recover the keys (AI was helpful there, since I only had to go through this process once), copy the data (rsync) to another PC, and then install Ubuntu 26.04, copy the data back, and Bob was my uncle.

1

u/Blitzbahn 3h ago

You might get better help on the official forums

2

u/rsinghal1965 1h ago

Ran into problem with upgrade too. I upgraded a VM running pihole & immich to 26.04. Everything went well but at night it just crashed giving Kernel panic error.