sddm and lightdm can run at the same time
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
One Hundred Papercuts |
Fix Released
|
Critical
|
Unassigned | ||
SDDM |
Fix Released
|
Unknown
|
|||
sddm (Ubuntu) |
Fix Released
|
Critical
|
Unassigned | ||
Bug Description
I originally installed Ubuntu MATE 14.10 which I then updated to 15.04. At some point I decided to try KDE Plasma 5, so I installed the kubuntu-desktop package.
I got the prompt asking me whether I wish to run lightdm or sddm and I chose lightdm. However after reboot I got black screen which loaded plasma cursors and I was unable to do anything without going to TTY.
Running "systemctl status lightdm && systemctl status sddm" told me that they both were running and I solved this with "systemctl disable sddm" and rebooted and got lightdm normally.
I think this might have something to do with Ubuntu 15.04 using systemd by default and sddm not having systemd unit.
PS. I am not fully sure if this is sddm issue, but I feel this is. Feel free to move this to correct place if I am wrong.
PPS. I experienced this week or two ago, but I don't think there have been upgrades to these packages, so I am sorry if this is known issue and already fixed.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: sddm 0.11.0-0ubuntu10
ProcVersionSign
Uname: Linux 3.19.0-14-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: MATE
Date: Tue Apr 21 19:59:52 2015
InstallationDate: Installed on 2014-12-19 (123 days ago)
InstallationMedia: Ubuntu MATE 14.10 "Utopic Unicorn" - amd64 (20141023)
SourcePackage: sddm
UpgradeStatus: Upgraded to vivid on 2015-04-05 (15 days ago)
upstart.
Upstream bug report:
https:/
(SDDM and LightDM can run in paralell (thus create conflict)
created 9.Apr.2016
Changed in sddm (Ubuntu): | |
importance: | Undecided → Critical |
Changed in hundredpapercuts: | |
status: | New → Confirmed |
importance: | Undecided → Critical |
Changed in sddm (Ubuntu): | |
status: | Confirmed → Triaged |
Changed in hundredpapercuts: | |
status: | Confirmed → Triaged |
description: | updated |
Changed in sddm: | |
importance: | Unknown → Undecided |
status: | Unknown → New |
importance: | Undecided → Unknown |
status: | New → Unknown |
Changed in sddm: | |
status: | Unknown → Fix Released |
Changed in hundredpapercuts: | |
status: | Triaged → Invalid |
I copied your report and edited in my on-upstart observations:
I got the prompt asking me whether I wish to run lightdm or sddm and I chose lightdm. However after reboot I got a text login on TTY1. (NOTE: Very fast, a fraction of time needed for reaching a login manager on that machine)
Running "service lightdm status && service sddm status" told me that they both were STOPPED.
I could run "service lightdm start" or "service sddm start" to start either one manually, but not automatically.
So it's not just on systemd.
NOTE: Even though I selected "lightdm" during sddm installation, default- display- manager was still overwritten to says "/usr/bin/sddm"
/etc/X11/
I fixed that by working around #1422247 and deinstalling sddm.