LightDM currently assigns each seat a different VT, and each seat tries to switch to its own VT when starting X. If I understand correctly, these switches compete with each other, causing the problem.
The proper solution is to have only the primary seat switch VTs, then have all other seats share that VT. LightDM doesn't currently support this, but I have some changes to LightDM in progress to add more complete multiseat support. If you are using Ubuntu, please try installing the version of LightDM in my PPA (<https://launchpad.net/~a7x/+archive/multiseat>): sudo apt-add-repository ppa:a7x/multiseat sudo apt-get update sudo apt-get upgrade More complete instructions can be found by visiting the PPA page. ** Changed in: lightdm Assignee: (unassigned) => a7x (a7x) ** Changed in: lightdm (Ubuntu) Assignee: Robert Ancell (robert-ancell) => a7x (a7x) ** Changed in: lightdm Status: New => In Progress ** Changed in: lightdm (Ubuntu) Status: Confirmed => In Progress ** Branch linked: lp:~a7x/lightdm/multiseat ** Branch linked: lp:~a7x/ubuntu/saucy/lightdm/multiseat -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/997483 Title: VT_WAITACTIVE does not work well with a multiseat setup Status in Light Display Manager: In Progress Status in “lightdm” package in Ubuntu: In Progress Bug description: Related to the fix introduced in bug #851612 . Saw this in lightdm.log (system call interrupted because of ctrl-alt-del pressed): [+2.97s] DEBUG: New display ready, switching to it [+2.97s] DEBUG: Activating VT 8 [+77.56s] WARNING: Error using VT_WAITACTIVE 8 on /dev/console: Interrupted system call [+77.56s] DEBUG: Got signal 15 from process 1 [+77.56s] DEBUG: Caught Terminated signal, shutting down And in x-1-greeter.log: [+0.48s] DEBUG: Loading users from org.freedesktop.Accounts [+0.48s] DEBUG: Loading user /org/freedesktop/Accounts/User1001 [+0.50s] DEBUG: Loading user /org/freedesktop/Accounts/User1000 [+50.56s] WARNING: Error getting session list from org.freedesktop.DisplayManager: Timeout was reached On vt7, unity-greeter would get stuck after password input. On vt8, unity-greeter appears after that "getting session list timeout", which is about a minute later than vt7, and does not have a password input field. lightdm blocked by VT_WAITACTIVE may be the cause... Tested with lightdm 1.2.0-0ubuntu2 in precise. To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/997483/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
