Comment 53 for bug 1048059

It seems that udisks2 sets unconditionnally ACLs and exits if it fails. So, udisks2 doesnt' work if the root filesystem doesn't support ACLs. Which is the case, by default for ext3. You can add acl support in your mount options in /etc/fstab, if you are using ext3 on your root filesystem :

/dev/xxxx / ext3 acl,errors=remount-ro 0 1

Someone has made a patch which tests ACLs availability before issuing ACL commands : http://www.spinics.net/lists/hotplug/msg05612.html