Mounting LUKS-enabled USB key always fails with "wrong passphrase" message

[Martijn vdS]

When I plug in my LUKS-enabled usb-disk, gnome-volume-manager asks me for a
passphrase.

When I type the passphrase, the device is not mounted, and this is in my
~/.xsession-errors:

manager.c/1033: Changed: /dev/sda1
manager.c/966: Added: /dev/sda1

** (gnome-volume-manager:7911): WARNING **: manager.c/698: failed to exec
/usr/bin/pmount-hal
Error: could not decrypt device (wrong passphrase?)

I setup LUKS like this:

cryptsetup luksFormat /dev/sda1
cryptsetup luksOpen /dev/sda1 usbdisk
mkfs.ext3 /dev/mapper/usbdisk
cryptsetup luksClose usbdisk
# then pull it out & plug it back in, and gnome-volume-manager asks me for a
passphrase.

[Martin Pitt (pitti)]

Just to confirm, the manual method

  pmount /dev/sda1

works?

If so, I'll build an extra debugging version soon. If you have time, maybe you
can do that yourself :-)

[Martin Pitt (pitti)]

This could be fixed in

 gnome-volume-manager (1.3.1-0ubuntu5) breezy; urgency=low
 .
   * Added debian/patches/07_dialogs_info.patch:
     - Hotplug popups are now information dialogs, not warnings.
     - Ubuntu #10651
   * Added debian/patches/08_photographss_typo.patch:
     - Fix typo "photographss" in src/manager.c and all translations.
   * debian/patches/06_pmount_crypt.patch:
     - Use g_child_watch_add() with a callback instead of waitpid(), since the
       latter does not work properly with g_spawn_async(). This could fix
       Ubuntu #11207.
     - If calling pmount-hal fails, and we have an encrypted device, show an
       error message box. (Ubuntu #11208)

Can you please try this version?

[Martijn vdS (martijn)]

Mounting works now, but unmounting gives me a dialog box with:

eject: unable to find or open device for: `/dev/mapper/_dev_sda1'

It's trying to eject the devicemapper file, while it should probably be ejecting
the underlying device. Otherwise, it's working great now!

[Martin Pitt (pitti)]

(In reply to comment #3)
> Mounting works now

Great, then I can close this bug. :-) Thanks for testing.

>, but unmounting gives me a dialog box with:
>
> eject: unable to find or open device for: `/dev/mapper/_dev_sda1'

Right, I know about this problem and I already have a half-working solution on
my hd. I need to think a bit more about it and will fix it soon.