lxdm and pam_group.so not working correctly
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
lxdm (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
We have a bunch of clients all configured identically. To give our users the choice and comfort they need for working smooth we have installed a big set of windows managers on these clients
Currently I'm preparing the upgrade from Precise to Trusty, so I've upgraded a few of the clients for testing. Because of the bugs https:/
Lxdm works fine for login and displays all available desktops with a proper scroll bar. Unfortunally it doesn't work together with the pam_group.so correctly.
First, I encountered problems with the 3d acceleration of the client falling back to llvmpipe. Analyzing the problem, I recognized that my pam_group assignments (we have ldap groups mapped to local ones) were not active, especially the membership in the video group (required for the intel i915 drivers) was not set.
Comparing the pam config files of lightdm and lxdm I recognized that /etc/pam.d/lxdm is including 'common-
In the /var/log/auth.log we have messages like this:
xscreensaver[
or
cinnamon-
It looks like the bug is similar to an old bug in lightdm (https:/