@Alexandre Are your additional X servers loaded with "-sharevts" option? You can see it with "ps -FC X | less" or "ps -FC Xorg | less".
Dou you have any additional setup in your lightdm.conf? Could you paste it here? -- 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/903194 Title: multiseat not set up correctly Status in Light Display Manager: New Status in “lightdm” package in Ubuntu: Confirmed Bug description: I have a multiseat xorg.conf setup on Arch Linux (with ServerLayouts called seat-chris and seat-brynn) Based on the below details, it seems that -sharevts is needed, but not handled correctly by lightdm If I use a fairly minimal config, I get: When lightdm starts, Seat 0 is activated Ctrl-Alt-F8 on Seat 0 kbd activates Seat 1 (deactivates Seat 0) Ctrl-Alt-F7 on Seat 1 kbd activates Seat 0 (deactivates Seat 1) lightdm.conf: -------------------- [LightDM] start-default-seat=false [SeatDefaults] session-wrapper=/etc/lightdm/Xsession xserver-config=xorg.conf.multiseat [Seat:0] xserver-layout=seat-chris [Seat:1] xserver-layout=seat-brynn pstree ----------- lightdm,9833 /etc/init.d/lightdm start `-lightdm,9834 |-X,9839 :0 -config xorg.conf.multiseat -layout seat-chris -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch |-X,9841 :1 -config xorg.conf.multiseat -layout seat-brynn -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch |-lightdm-gtk-gre,9860 | `-{lightdm-gtk-gr},9861 |-lightdm-gtk-gre,9881 | `-{lightdm-gtk-gr},9882 |-{lightdm},9837 |-{lightdm},9840 |-{lightdm},9863 `-{lightdm},9884 When I use the sharevts flag on Seat 1, I see the following: On lightdm start, Seat 0 is activated After a second or so, Seat 0 goes blank, and Seat 1 is activated Pressing Ctrl-Alt-F7 on Seat 1 activates Seat 0 again, and I can log in on both correctly lightdm.conf ----------------- [LightDM] start-default-seat=false [SeatDefaults] session-wrapper=/etc/lightdm/Xsession xserver-config=xorg.conf.multiseat greeter-hide-users=false [Seat:0] xserver-layout=seat-chris [Seat:1] xserver-command=/usr/bin/X -sharevts xserver-layout=seat-brynn pstree ----------- lightdm,21164 /etc/init.d/lightdm start `-lightdm,21165 |-X,21171 :0 -config xorg.conf.multiseat -layout seat-chris -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch |-X,21173 -sharevts :1 -config xorg.conf.multiseat -layout seat-brynn -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch |-lightdm-gtk-gre,21192 | `-{lightdm-gtk-gr},21193 |-lightdm-gtk-gre,21210 | `-{lightdm-gtk-gr},21211 |-{lightdm},21168 |-{lightdm},21172 |-{lightdm},21195 `-{lightdm},21215 If I try sharevts on both sessions, I see the following: On lightdm start, Seat 1 starts up Seat 0 shows a mouse pointer on a text mode console printing the kernel message 'Invalid Framebuffer ID' If I force kill lightdm and restart it using the init.d service, then it starts correctly lightdm.conf ------------------ [LightDM] start-default-seat=false [SeatDefaults] session-wrapper=/etc/lightdm/Xsession xserver-config=xorg.conf.multiseat greeter-hide-users=false [Seat:0] xserver-command=/usr/bin/X -sharevts xserver-layout=seat-chris [Seat:1] xserver-command=/usr/bin/X -sharevts xserver-layout=seat-brynn pstree -------- lightdm,32594 /etc/init.d/lightdm start `-lightdm,32595 |-X,32599 -sharevts :0 -config xorg.conf.multiseat -layout seat-chris -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch |-X,32603 -sharevts :1 -config xorg.conf.multiseat -layout seat-brynn -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch |-lightdm-gtk-gre,32620 | `-{lightdm-gtk-gr},32623 |-lightdm-gtk-gre,32640 | `-{lightdm-gtk-gr},32643 |-{lightdm},32598 |-{lightdm},32600 |-{lightdm},32645 `-{lightdm},4109 To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/903194/+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
