After upgrade from 10.04 to 12.04, I cannot boot with linux 3.2.0-24-generic-pae: process gets frozen in a xubuntu initialization screen (I had qimo installed).

If I try the recovery mode (with the same Linux version), booting freezes after this message:

Begin: Mounting root file system.

If in grub menu I choose Previous Linux versions, I can boot using Linux 2.6.32-41-generic-pae. But once logged in, some things don't seem to work (apt-get update fails, update manager fails, HID menu does not provide suggestions...) (to be honest, I have no idea whether this is part of the bigger issue)

Reading in Ask Ubuntu through apparently similar problems, I decided to follow some advices: got boot-repair and run it. The problem remains & I got this report.

I also run as root in terminal

$ sudo update-initramfs -u

and this is what I got:

update-initramfs: Generating /boot/initrd.img-3.2.0-24-generic-pae

cryptsetup: WARNING: failed to detect canonical device of /dev/sda1

cryptsetup: WARNING: could not determine root device from /etc/fstab

/tmp/mkinitramfs_EIDlHy/scripts/classmate-bottom/45xconfig: 9: .: Can't open /scripts/casper-functions

What else? My pc is Intel® Core™ i7 CPU 870 @ 2.93GHz × 8, graphs is GeForce 8400 GS/PCIe/SSE2, memory is 7,8 GiB.

I have two questions: Is this a bug in the newest kernel I should report? Is there anything I can do appart from a fresh install?

  • 1
    There are issues with upgrade from 10.04 to 12.04 and clearly warned in the release notes to post pone it.Please read this wiki.ubuntu.com/PrecisePangolin/ReleaseNotes/UbuntuDesktop – beeju May 10 '12 at 0:02
  • @beeju thanks for the link, I must admit I did read the warning only after doing the upgrade! Oh well, it won't happen again... – Ricardo May 10 '12 at 21:03

Based on this upstream Debian bug report I'd say the two cryptsetup warning messages are not related to the cause of the boot failure.


There are suggestions that removing the canonical-census package fixes the issue about not being able to open /scripts/casper-functions



Your report shows that your Ubuntu partition ends far from the start of the disk:

Model: ATA WDC WD5002ABYS-0 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End    Size    Type      File system     Flags
1      1049kB  490GB  490GB   primary   ext4            boot

So you may need this: http://ubuntuforums.org/showthread.php?t=1998257


After some time on it, I think I can now partially answer the minor issues:

HUD menu does not provide suggestions...

I have been able to replicate in an ASUS EeePC T101MT the HUD problem. I started from fresh install 10.04.2 from USB, updated using Synaptic, then upgraded to 12.04. HUD would not work properly. This looks to me like a bug. I will report it as bug if it has not been reported (any help/info appreciated)

I cannot boot with linux 3.2.0-24-generic-pae

I could not replicate the boot problem with the ASUS, so really no clues there. It could be machine specific, it could be software I had installed...

a xubuntu initialization screen (I had qimo installed)

qimo and Xfce do not play any role here: HUD problem takes place if I install qimo before upgrading and also if I do not install it. And no boot problem in the ASUS regardless of qimo.

Is there anything I can do appart from a fresh install?

Surely a 12.04 fresh intall and everything works in the ASUS. So, if you really want to go 12.04, as @beeju said, please first read


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