I'm using Kubuntu and KDM.
Updated to 13.10 (64bit, Kubuntu) and encountered the same problem.
Cannot mount USB devices. Cannnot change settings in System
Settings-Login Screen (apply and leave screen asks to apply again
resulting in Unable to authenticate/execute the action: (code 4).
Tried
Checked the login screen shutdown problem using KDM: this works.
Reviewing the PAM files shows that the kdm file calls the common-session
file.
Tried version of #32
* modified to
session required pam_systemd.so
in /etc/pam.d/common-session
* reboot
= did not work
Tried version of #32
*
My problem has something to do with KDE, udisk, and multiple authentication
identities.
Disregard my prior comments.
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https://bugs.launchpad.net/bugs/1240336
Title:
Not
OK, it is this issue. PolicyKit is choking udisk2. Here are the sample
commands:
$ udisksctl mount -b /dev/sdm1 --no-user-interaction
Error mounting /dev/sdm1:
GDBus.Error:org.freedesktop.UDisks2.Error.NotAuthorizedCanObtain: Not
authorized to perform operation
$ udisksctl mount -b /dev/sdm1
Cleaned up /etc/pam.d and used sudo pam-auth-update and sudo pam-
auth-update --force to autofix thing. I found I had an extra likewise
PAM profile in /usr/share/pam-configs/.
Nothing worked.
Finally, I retried a previous solution:
Tried version of #32
* Added
session required
Further testing indicates that the above (#50) solution can be removed
once you have a working system.
Steps:
1. Added
session required pam_loginuid.so
session required pam_systemd.so
to top of /etc/pam.d/whatever_DM_file_you _use
2. Logout, Restart X, Login
3. Check that you can
