Experiencing it on Ubuntu 14.04, lightdm 1.9.6 Steps to reproduce 1. Login as user1 (starts session on vt7) 2. Switch to user2 (starts session on vt8) 3. Try to switch to user1 session. Attempt brings to black X screen (just cross mouse pointer). It seems lightdm starts X only on vt9.
Thus, there are three X terminals (vt7, vt8, vt9). Switching to another user is possible via manual ctrl-alt-f[7-8] only Attempt to switch via indicator-session always brings to vt9 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/851612 Title: Logging out from a FUS session does not reliably return to VT7 Status in Light Display Manager: Fix Committed Status in “lightdm” package in Ubuntu: Triaged Status in “xorg-server” package in Ubuntu: Triaged Status in “lightdm” source package in Oneiric: Won't Fix Status in “xorg-server” source package in Oneiric: Won't Fix Status in “lightdm” source package in Precise: Confirmed Status in “xorg-server” source package in Precise: Confirmed Bug description: [Problem] Logging out of a second user session results in a black screen with blinking cursor, until you manually switch to vt7. Might also be caused when screen is locked because of inactivity. [Impact] Frequency of occurrence may be about 1 in 4. Not a hardware-specific problem, so can be encountered by most users. [Development Fix] Adding a VT_WAITACTIVE after the VT_ACTIVATE ioctl helps reduce the chance of a race condition between LightDM, the kernel, ConsoleKit, and X, but is not a complete solution. This change was introduced to Precise as of version 1.1.2-0ubuntu1 on Feb 10th. [Stable Fix] The development change was not a complete fix. Thus the change is not valid for SRUing. [Text Case] 1. Have a multi-user system 2. Start up and log in as a user 3. Use the User Menu to switch to another user 4. You will be at the Unity Greeter, log in as the second user 5. The second user session will load 6. Choose Log Out from the power/setting menu 7. You will be at the Unity Greeter 8. select and enter the password for the logged in user Broken Behavior: The screen turns black and shows a blinking cursor Manually switching to VT7 shows the first user session, and works fine Fixed Behavior: Automatically returned to VT7 after entering the password for the first user [Regression Potential] <fill me in with a discussion of likelihood and potential severity of regressions and how users could get inadvertently affected. [Original Report] Steps: 1. Have a multi-user system 2. Start up and log in as a user 3. Use the Use Menu to switch to another user 4. You will be at the Unity Greeter, log in as the second user 5. The second user session will load 6. Choose Log Out from the power/setting menu 7. You will be at the Unity Greeter 8. select and enter the password for the logged in user Result: The screen turns black and shows a blinking cursor Manually switching to VT7 shows the first user session, and works fine Expected: Automatically returned to VT7 after entering the password for the first user ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: lightdm 0.9.7-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4 Uname: Linux 3.0.0-11-generic i686 NonfreeKernelModules: wl ApportVersion: 1.23-0ubuntu1 Architecture: i386 Date: Fri Sep 16 08:19:11 2011 InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Alpha i386 (20100329) ProcEnviron: LANGUAGE=en_US:en PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: Upgraded to oneiric on 2011-09-11 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/851612/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
