Bug#749571: grub-pc: "aptitude install" reports "post-installation script returned error exit status 30"

[Paul]

> Could you post the output from "sudo DEBCONF_DEBUG=developer
> aptitude install"?

paul at shift:~$ sudo DEBCONF_DEBUG=developer aptitude install
[sudo] password for paul: 
The following partially installed packages will be configured:
  grub-pc 
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 10 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
Setting up grub-pc (2.02~beta2-10) ...
debconf (developer): frontend started
debconf (developer): frontend running, package name is grub-pc
debconf (developer): starting /var/lib/dpkg/info/grub-pc.config configure 2.02~beta2-9
debconf (developer): <-- INPUT high grub-pc/chainload_from_menu.lst
debconf (developer): --> 30 question skipped
debconf (developer): <-- GET grub-pc/kopt_extracted
debconf (developer): --> 0 true
debconf (developer): <-- SET grub2/linux_cmdline quiet
debconf (developer): --> 0 value set
debconf (developer): <-- SET grub2/linux_cmdline_default quiet
debconf (developer): --> 0 value set
debconf (developer): <-- SET grub-pc/timeout 5
debconf (developer): --> 0 value set
debconf (developer): <-- INPUT medium grub2/linux_cmdline
debconf (developer): --> 30 question skipped
debconf (developer): <-- INPUT medium grub2/linux_cmdline_default
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO 
debconf (developer): --> 0 ok
debconf (developer): starting /var/lib/dpkg/info/grub-pc.postinst configure 2.02~beta2-9
debconf (developer): <-- GET grub2/linux_cmdline
debconf (developer): --> 0 quiet
debconf (developer): <-- GET grub2/linux_cmdline_default
debconf (developer): --> 0 quiet
debconf (developer): <-- GET grub-pc/timeout
debconf (developer): --> 0 5
debconf (developer): <-- GET grub-pc/hidden_timeout
debconf (developer): --> 0 false
debconf (developer): <-- X_LOADTEMPLATEFILE /var/lib/dpkg/info/ucf.templates ucf
debconf (developer): --> 0
debconf (developer): <-- SUBST grub-pc/mixed_legacy_and_grub2 DISKS /dev/sda /dev/sdb /dev/sdd
debconf (developer): --> 0
debconf (developer): <-- INPUT critical grub-pc/mixed_legacy_and_grub2
debconf (developer): --> 30 question skipped
dpkg: error processing package grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 30
E: Sub-process /usr/bin/dpkg returned an error code (1)
Failed to perform requested operation on package.  Trying to recover:
Setting up grub-pc (2.02~beta2-10) ...
debconf (developer): frontend started
debconf (developer): frontend running, package name is grub-pc
debconf (developer): starting /var/lib/dpkg/info/grub-pc.config configure 2.02~beta2-9
debconf (developer): <-- INPUT high grub-pc/chainload_from_menu.lst
debconf (developer): --> 30 question skipped
debconf (developer): <-- GET grub-pc/kopt_extracted
debconf (developer): --> 0 true
debconf (developer): <-- SET grub2/linux_cmdline quiet
debconf (developer): --> 0 value set
debconf (developer): <-- SET grub2/linux_cmdline_default quiet
debconf (developer): --> 0 value set
debconf (developer): <-- SET grub-pc/timeout 5
debconf (developer): --> 0 value set
debconf (developer): <-- INPUT medium grub2/linux_cmdline
debconf (developer): --> 30 question skipped
debconf (developer): <-- INPUT medium grub2/linux_cmdline_default
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO 
debconf (developer): --> 0 ok
debconf (developer): starting /var/lib/dpkg/info/grub-pc.postinst configure 2.02~beta2-9
debconf (developer): <-- GET grub2/linux_cmdline
debconf (developer): --> 0 quiet
debconf (developer): <-- GET grub2/linux_cmdline_default
debconf (developer): --> 0 quiet
debconf (developer): <-- GET grub-pc/timeout
debconf (developer): --> 0 5
debconf (developer): <-- GET grub-pc/hidden_timeout
debconf (developer): --> 0 false
debconf (developer): <-- X_LOADTEMPLATEFILE /var/lib/dpkg/info/ucf.templates ucf
debconf (developer): --> 0
debconf (developer): <-- SUBST grub-pc/mixed_legacy_and_grub2 DISKS /dev/sda /dev/sdb /dev/sdd
debconf (developer): --> 0
debconf (developer): <-- INPUT critical grub-pc/mixed_legacy_and_grub2
debconf (developer): --> 30 question skipped
dpkg: error processing package grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 30
Errors were encountered while processing:
 grub-pc


--
Paul.