[Natty] Ubiquity takes forever to load partitioner (if exotic file systems are present?)

[Felix Zweig]

Binary package hint: ubiquity

Using Natty Desktop Alpha 3, the installer takes forever to load the screen after the installation preparation ("For best results, ensure that this computer...").

This also happens using the Alternate CD!

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: ubiquity 2.5.22 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic i686
Architecture: i386
Date: Sat Mar 5 10:16:37 2011
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Felix Zweig (f.zweig)]

I've added debian-installer since this also happens using the Alternate CD. However, feel free the change it back.

[Julian Taylor (jtaylor)]

I have the same problem but only when my external hard disk is plugged in.

[Felix Zweig (f.zweig)]

I'm having a partition formatted as BFS (type "eb") on my disk. After removing it, the partitioner loaded successfully. So the problem seems be unrecognized file systems.

[Julian Taylor (jtaylor)]

a partition with lvm2 also causes the hang.

working partition setup:
ext4, ext4, ext4, ntfs

not working:
lvm2, ext4, ext4, ntfs
ext4, ext4, ext4, ntfs + external with: truecrypt partition (ntfs), ntfs (unencrypted)

[Colin Watson (cjwatson)]

This appears to be the same as bug 729394.