Public bug reported: I'm using Xephyr for a multiseat system (4 GPUs -> up to 12 screens; using VirtualGL for 3D acceleration.)
The eventual command line that LightDM ends up running is: Xephyr -fullscreen :0 -seat seat5 -auth /var/run/lightdm/root/:0 -nolisten tcp In 18.04 and earlier this works great. Important note: There is a strong chance my system had the version of Xephyr from the Multiseat PPA with Evdev support patches (https://launchpad.net/~ubuntu- multiseat/+archive/ubuntu/xephyr/+packages). In 19.04 I get: root@redstone-server:~# DISPLAY=:200.1 Xephyr -fullscreen -seat seat6 :20 Pointer option key (_source) of value (server/udev) not assigned! Pointer option key (major) of value (13) not assigned! Pointer option key (minor) of value (80) not assigned! Pointer option key (config_info) of value (udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.5/2-1.5.5.3/2-1.5.5.3.1/2-1.5.5.3.1:1.0/0003:045E:0083.001D/input/input58/event16) not assigned! Pointer option key (GrabDevice) of value (on) not assigned! couldn't find driver for pointer device "Microsoft Basic Optical Mouse" (/dev/input/event16) Pointer option key (_source) of value (server/udev) not assigned! Pointer option key (major) of value (13) not assigned! Pointer option key (minor) of value (32) not assigned! Pointer option key (config_info) of value (udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.5/2-1.5.5.3/2-1.5.5.3.1/2-1.5.5.3.1:1.0/0003:045E:0083.001D/input/input58/mouse0) not assigned! Pointer option key (GrabDevice) of value (on) not assigned! couldn't find driver for pointer device "Microsoft Basic Optical Mouse" (/dev/input/mouse0) Kbd option key (_source) of value (server/udev) not assigned! Kbd option key (major) of value (13) not assigned! Kbd option key (minor) of value (93) not assigned! Kbd option key (config_info) of value (udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.5/2-1.5.5.3/2-1.5.5.3.2/2-1.5.5.3.2:1.0/0003:045E:0752.001E/input/input59/event29) not assigned! Kbd option key (GrabDevice) of value (on) not assigned! couldn't find driver for keyboard device "Microsoft Wired Keyboard 400" (/dev/input/event29) The display is correct, but no user input (mouse or keyboard) works. It looks like Xephyr can't find any input drivers. I also tried specifying drivers (eg Evdev, libinput, keyboard, mouse, ...) Nothing worked. Extracting the version of Xephyr from https://launchpad.net/~ubuntu- multiseat/+archive/ubuntu/xephyr/+packages runs correctly. Required details: lsb_release -rd Description: Ubuntu 19.04 Release: 19.04 apt-cache policy xserver-xephyr xserver-xephyr: Installed: 2:1.20.4-1ubuntu3 Candidate: 2:1.20.4-1ubuntu3 Version table: *** 2:1.20.4-1ubuntu3 500 500 http://ca.archive.ubuntu.com/ubuntu disco/main amd64 Packages 100 /var/lib/dpkg/status ** Affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Tags: multiseat -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1828671 Title: Xephyr Input is broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1828671/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
