[Bug 986833] Re: Setting up memtest86+ (4.20-1.1ubuntu1) hangs indefinitely while generating grub.cfg

[Jaakko Kiviluoto]

*** This bug is a duplicate of bug 970260 ***
    https://bugs.launchpad.net/bugs/970260

I ran into this when I had my Garmin navigator connected over USB, with
its internal and external storages automatically mounted. At some stage
os-prober executes "blkid -o value -s TYPE /dev/sde1" (as root) which
gets stuck. It was probing the navigator's external SDcard storage that
apparently wasn't accessible anymore even if it was still mounted.

Thanks Laurent for your workaround, it helped me.

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https://bugs.launchpad.net/bugs/986833

Title:
  Setting up memtest86+ (4.20-1.1ubuntu1) hangs indefinitely while
  generating grub.cfg

Status in “memtest86+” package in Ubuntu:
  Confirmed

Bug description:
  Occurred while upgrading from 11.10 to 12.04 beta 2

  lsb_release -rd
  Description:	Ubuntu 12.04 LTS
  Release:	12.04

  apt-cache policy memtest86+
  memtest86+:
    Installed: 4.20-1.1ubuntu1
    Candidate: 4.20-1.1ubuntu1
    Version table:
   *** 4.20-1.1ubuntu1 0
          500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
          100 /var/lib/dpkg/status

  During the installing new packages step, terminal became stuck at
  configuring memtest86+, I broke out of it with ctrl+c and the setup
  continued, but with ubuntu-standard subsequently failing due to the
  missing dependency.

  I mounted and installed the missing packages ignoring the dependency
  using the 12.04 Live CD and the system booted and was functional
  correctly, apart from update manager doesn't work complaining that I
  need to perform a partial upgrade instead.

  When I attempt to sudo dpkg --configure -a as recommended by the error
  dialog I am presented with the following behaviour.

  Terminal output:

  Setting up memtest86+ (4.20-1.1ubuntu1) ...
  Generating grub.cfg ...
  Found linux image: /boot/vmlinuz-3.2.0-23-generic
  Found initrd image: /boot/initrd.img-3.2.0-23-generic
  Found linux image: /boot/vmlinuz-3.0.0-17-generic
  Found initrd image: /boot/initrd.img-3.0.0-17-generic
  Found linux image: /boot/vmlinuz-3.0.0-16-generic
  Found initrd image: /boot/initrd.img-3.0.0-16-generic
  Found linux image: /boot/vmlinuz-3.0.0-15-generic
  Found initrd image: /boot/initrd.img-3.0.0-15-generic
  Found linux image: /boot/vmlinuz-3.0.0-14-generic
  Found initrd image: /boot/initrd.img-3.0.0-14-generic
  Found linux image: /boot/vmlinuz-3.0.0-12-generic
  Found initrd image: /boot/initrd.img-3.0.0-12-generic
  Found memtest86+ image: /boot/memtest86+.bin
  umount: /var/lib/os-prober/mount: not mounted
  rmdir: failed to remove `/var/lib/os-prober/mount': Device or resource busy
  grub-probe: error: cannot find a GRUB drive for /dev/sdb1.  Check your device.map.
  grub-probe: error: cannot find a GRUB drive for /dev/sdb2.  Check your device.map.
  grub-probe: error: cannot find a GRUB drive for /dev/sdb4.  Check your device.map.
  done

  at which point it hangs indefinitely and if I break it (ctrl+c) the
  following:

  ^Cdpkg: error processing memtest86+ (--configure):
   subprocess installed post-installation script was interrupted
  Errors were encountered while processing:
   memtest86+

  The fact that this package is unconfigured is preventing me from using
  update manager since ubuntu-standard has it as a dependency.

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