gnome-session conflicts with cinnamon-session

[Nazar Mokrynskyi]

I see next message in window without decoration and black background:

* Could not acquire name on session bus.
* Failed to load session 'Ubuntu'

Gnome fallback mode works fine.

I think this is CRITICAL bug.
Reinstalling/downgrade of some packages did not help me.
Compiz in fallback mode works fine.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity 7.0.0daily13.04.18~13.04-0ubuntu1
Uname: Linux 3.10.0-rc4-bulldozer x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.10.2-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sat Jun 8 16:23:38 2013
DistUpgraded: 2013-05-12 12:26:17,024 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Turks PRO [Radeon HD 6570] [1002:6759] (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Device [1682:3195]
 Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770 GHz Edition] [1002:683d] (prog-if 00 [VGA controller])
   Subsystem: Hightech Information System Ltd. Device [1787:2319]
InstallationDate: Installed on 2012-04-27 (406 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-rc4-bulldozer root=UUID=59430d17-e491-4f6f-ab9a-82c92889317c ro max_loop=64 xen-pciback.hide=(04:00.0)(04:00.1)(00:12.0)(00:12.2) quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to saucy on 2013-05-12 (27 days ago)
dmi.bios.date: 10/12/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.50
dmi.board.name: 990FX Extreme3
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd10/12/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn990FXExtreme3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.45-2ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.3-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 9.1.3-0ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.3-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2glamor2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.9-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Sat Jun 8 16:09:51 2013
xserver.configfile: /etc/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu10
xserver.video_driver: radeon

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Nazar Mokrynskyi (nazar-pc)]

I found, that it didn't work because of cinnamon-session, that was installed togather with Nemo file manager.
After removing them I'm able lo log in, but actually, problem still exists,

[Andrea Bellitto (9600xt)]

After i installed cinnamon on Ubuntu 13.10 i had same issue, i did try to remove cinnamon, cinnamon-session, nemo, but i can't login to unity session anymore... Please someone can help me?

Thanks

[Nazar Mokrynskyi (nazar-pc)]

Removing all cinnamon-related packages helped me, maybe you have something still not uninstalled?

[Andrea Bellitto (9600xt)]

No i uninstalled all releated cinnamon with apt-get purge cinnamon* && apt-get autoremove, i did also restore of gnome-desktop and gnome-session with dpkg-reconfigure command but i had to reinstall entire system to have it working again, and now i'm with unity only. :(

[Jeremy Bícha (jbicha)]

cinnamon-session is not an Ubuntu package. Ubuntu developers are unable to fix a problem that is not in an Ubuntu package.

I assume you got cinnamon-session from a PPA. Please report this problem to the maintainers of that PPA.

[ek0892 (kranich)]

yes i confirm to me : Failed to load session 'Ubuntu' with Cinnamon + Unity

Cinnamon is Ok
But session with Unty is fail = Failed to load session 'Ubuntu'