Thanks. I've uploaded a fix which works for me to vivid's SRU queue. It should be accepted into vivid-proposed soon.
** Description changed: + [ Description ] + + Due to an error when merging with Debian, ubuntu's gnome-session file is + inadvertantly starting compiz when it should instead be managed by upstart. + This means that we don't, for example, have unity restarted by upstart if it + crashes and (as the reporter of this bug notes) unity --replace breaks due to + gnome-session tearing the session down if one of its required components goes + away and comes back. + + [ Fix ] + + Remove "compiz;" from ubuntu.session so that the unity7.conf shipped by unity + is used. + + [ QA ] + + Verify that you see the following before upgrading + + laney@raleigh> status unity7 + unity7 stop/waiting + laney@raleigh> pstree -s -p $(pidof compiz) + systemd(1)───lightdm(1625)───lightdm(10651)───upstart(10864)───gnome-session(11094)───compiz(11374)─┬─{dconf worker}(11382) + ├─{gdbus}(11383) + └─{gmain}(11376) + + i.e. compiz is a child of gnome-session, and the unity7 job isn't + running. + + and this after + + laney@raleigh> status unity7 + unity7 start/running, process 8945 + laney@raleigh> pstree -s -p $(pidof compiz) + systemd(1)───lightdm(1625)───lightdm(8487)───upstart(8715)───compiz(8945)─┬─{dconf worker}(8972) + ├─{gdbus}(8976) + └─{gmain}(8950) + + + compiz is a direct child of upstart and the unity7 job is running. + + Additionally, verify that unity --replace kicks you back to the display manager + before and unity is replaced in-session after. + + [ Regression potential ] + + unity's job is now used instead of upstart being started by gnome-session. This + was the case since we started having upstart in the session, but make sure that + login and logout still work properly. + + [ Original description ] + Running ./unity --replace <params> on vivid (systemd) exits the session and the login screen of lightdm appears. After log in, a new session starts. Steps: 1- build unity 2- run ./unity --replace with the env. variables and parameters you used on utopic 3- see the lightdm login screen and login ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: ubuntu-session 3.14.0-2ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Apr 29 13:15:16 2015 InstallationDate: Installed on 2014-07-04 (299 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) ** Description changed: [ Description ] Due to an error when merging with Debian, ubuntu's gnome-session file is - inadvertantly starting compiz when it should instead be managed by upstart. - This means that we don't, for example, have unity restarted by upstart if it - crashes and (as the reporter of this bug notes) unity --replace breaks due to - gnome-session tearing the session down if one of its required components goes - away and comes back. + inadvertantly starting compiz when it should instead be managed by + upstart. This means that we don't, for example, have unity restarted by + upstart if it crashes and (as the reporter of this bug notes) unity + --replace breaks due to gnome-session tearing the session down if one of + its required components goes away and comes back. [ Fix ] - Remove "compiz;" from ubuntu.session so that the unity7.conf shipped by unity - is used. + Remove "compiz;" from ubuntu.session so that the unity7.conf shipped by + unity is used. [ QA ] Verify that you see the following before upgrading laney@raleigh> status unity7 unity7 stop/waiting laney@raleigh> pstree -s -p $(pidof compiz) systemd(1)───lightdm(1625)───lightdm(10651)───upstart(10864)───gnome-session(11094)───compiz(11374)─┬─{dconf worker}(11382) - ├─{gdbus}(11383) - └─{gmain}(11376) + ├─{gdbus}(11383) + └─{gmain}(11376) i.e. compiz is a child of gnome-session, and the unity7 job isn't running. and this after laney@raleigh> status unity7 unity7 start/running, process 8945 laney@raleigh> pstree -s -p $(pidof compiz) systemd(1)───lightdm(1625)───lightdm(8487)───upstart(8715)───compiz(8945)─┬─{dconf worker}(8972) - ├─{gdbus}(8976) - └─{gmain}(8950) - + ├─{gdbus}(8976) + └─{gmain}(8950) compiz is a direct child of upstart and the unity7 job is running. - Additionally, verify that unity --replace kicks you back to the display manager - before and unity is replaced in-session after. + Additionally, verify that unity --replace kicks you back to the display + manager before and unity is replaced in-session after. [ Regression potential ] - unity's job is now used instead of upstart being started by gnome-session. This - was the case since we started having upstart in the session, but make sure that - login and logout still work properly. + unity's job is now used instead of upstart being started by + gnome-session. This was the case since we started having upstart in the + session, but make sure that login and logout still work properly. [ Original description ] Running ./unity --replace <params> on vivid (systemd) exits the session and the login screen of lightdm appears. After log in, a new session starts. Steps: 1- build unity - 2- run ./unity --replace with the env. variables and parameters you used on utopic + 2- run ./unity --replace with the env. variables and parameters you used + on utopic 3- see the lightdm login screen and login ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: ubuntu-session 3.14.0-2ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Apr 29 13:15:16 2015 InstallationDate: Installed on 2014-07-04 (299 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1449959 Title: Running ./unity --replace ... terminates the session and starts a new one on vivid Status in gnome-session package in Ubuntu: In Progress Status in gnome-session source package in Vivid: In Progress Bug description: [ Description ] Due to an error when merging with Debian, ubuntu's gnome-session file is inadvertantly starting compiz when it should instead be managed by upstart. This means that we don't, for example, have unity restarted by upstart if it crashes and (as the reporter of this bug notes) unity --replace breaks due to gnome-session tearing the session down if one of its required components goes away and comes back. [ Fix ] Remove "compiz;" from ubuntu.session so that the unity7.conf shipped by unity is used. [ QA ] Verify that you see the following before upgrading laney@raleigh> status unity7 unity7 stop/waiting laney@raleigh> pstree -s -p $(pidof compiz) systemd(1)───lightdm(1625)───lightdm(10651)───upstart(10864)───gnome-session(11094)───compiz(11374)─┬─{dconf worker}(11382) ├─{gdbus}(11383) └─{gmain}(11376) i.e. compiz is a child of gnome-session, and the unity7 job isn't running. and this after laney@raleigh> status unity7 unity7 start/running, process 8945 laney@raleigh> pstree -s -p $(pidof compiz) systemd(1)───lightdm(1625)───lightdm(8487)───upstart(8715)───compiz(8945)─┬─{dconf worker}(8972) ├─{gdbus}(8976) └─{gmain}(8950) compiz is a direct child of upstart and the unity7 job is running. Additionally, verify that unity --replace kicks you back to the display manager before and unity is replaced in-session after. [ Regression potential ] unity's job is now used instead of upstart being started by gnome-session. This was the case since we started having upstart in the session, but make sure that login and logout still work properly. [ Original description ] Running ./unity --replace <params> on vivid (systemd) exits the session and the login screen of lightdm appears. After log in, a new session starts. Steps: 1- build unity 2- run ./unity --replace with the env. variables and parameters you used on utopic 3- see the lightdm login screen and login ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: ubuntu-session 3.14.0-2ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Apr 29 13:15:16 2015 InstallationDate: Installed on 2014-07-04 (299 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1449959/+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