I tried it again and couldn't reproduce the same. But I first found this issue in precise only. For me it was more like an issue with stopping lightdm than un-installing it. I triggered it first time as below. Had lightdm installed and it was the default display manager.Boot the machine, login using lightdm.Install gdm (sudo apt-get install gdm) - On the pop-up windoow in terminal, select gdm as defaultStop lightdm (CTRL+ALT+F1 for terminal screen - Login - sudo stop lightdm)Remove lightdm (sudo apt-get remove --purge lightdm)This gave a warning saying lightdm user is still logged in. On next reboot (and login with gdm), I got the pop-up saying system problem detected and reported the below error. But this is not happening at present. After stop lightdm, purge lightdm worked fine for me. Regards,Sreekumar
> Date: Thu, 14 Jun 2012 15:46:53 +0000 > From: [email protected] > To: [email protected] > Subject: [Bug 992376] Re: package lightdm (not installed) failed to > install/upgrade: subprocess installed post-removal script returned > error exit status 1 > > Jim, > > Can you confirm that precise also fixed this for you? > > -- > You received this bug notification because you are subscribed to a > duplicate bug report (1001268). > https://bugs.launchpad.net/bugs/992376 > > Title: > package lightdm (not installed) failed to install/upgrade: subprocess > installed post-removal script returned error exit status 1 > > Status in “lightdm” package in Ubuntu: > Incomplete > > Bug description: > lightdm failed to install or uninstall properly. While it was > installed I could not login to my system. stopping the service and > then removing the package and installing gdm fixed the issue. Not as > pretty but at least I can login. > > Description: Ubuntu 12.04 LTS > Release: 12.04 > > ProblemType: Package > DistroRelease: Ubuntu 12.04 > Package: lightdm (not installed) > ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 > Uname: Linux 3.2.0-24-generic x86_64 > NonfreeKernelModules: nvidia > ApportVersion: 2.0.1-0ubuntu7 > AptOrdering: > lightdm-gtk-greeter: Purge > ubuntu-desktop: Purge > lightdm: Purge > Architecture: amd64 > Date: Mon Apr 30 21:15:34 2012 > ErrorMessage: subprocess installed post-removal script returned error exit > status 1 > InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) > SourcePackage: lightdm > Title: package lightdm (not installed) failed to install/upgrade: > subprocess installed post-removal script returned error exit status 1 > UpgradeStatus: Upgraded to precise on 2012-04-27 (3 days ago) > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/992376/+subscriptions -- 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/992376 Title: package lightdm (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1 Status in “lightdm” package in Ubuntu: Incomplete Bug description: lightdm failed to install or uninstall properly. While it was installed I could not login to my system. stopping the service and then removing the package and installing gdm fixed the issue. Not as pretty but at least I can login. Description: Ubuntu 12.04 LTS Release: 12.04 ProblemType: Package DistroRelease: Ubuntu 12.04 Package: lightdm (not installed) ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu7 AptOrdering: lightdm-gtk-greeter: Purge ubuntu-desktop: Purge lightdm: Purge Architecture: amd64 Date: Mon Apr 30 21:15:34 2012 ErrorMessage: subprocess installed post-removal script returned error exit status 1 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) SourcePackage: lightdm Title: package lightdm (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1 UpgradeStatus: Upgraded to precise on 2012-04-27 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/992376/+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
