LightDM comes back to greeter after login in and "nvidia" logo

[forevertheuni]

Description: Ubuntu oneiric (development branch)
Release: 11.10

lightdm:
  Installed: 0.9.7-0ubuntu1
  Candidate: 0.9.7-0ubuntu1
  Version table:
 *** 0.9.7-0ubuntu1 0
        500 http://ftp.free.org/mirrors/archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

I can't login to any window manager. Kdm works, "startx" doesn't, gdm doesn't.

With KDM, which works with unity, kdm, etc: is finished by
[ 12883.746] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input10/event10"
[ 12883.746] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD)
[ 12883.746] (II) SynPS/2 Synaptics TouchPad: initialized for absolute axes.
[ 12883.746] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[ 12883.746] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 0
[ 12883.746] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[ 12883.746] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 12883.746] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse2)
[ 12883.746] (II) No input driver/identifier specified (ignoring)
[ 12883.751] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/event6)
[ 12883.751] (II) No input driver/identifier specified (ignoring)
[ 12883.751] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/mouse1)
[ 12883.751] (II) No input driver/identifier specified (ignoring)
[ 12894.779] (II) XKB: reuse xkmfile /var/lib/xkb/server-F9AB5957C4038215CF2E4173BD9C63568071BF76.xkm

With lightDM, no login is possible even to failsafes:
[ 12819.547] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input10/event10"
[ 12819.547] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD)
[ 12819.547] (II) SynPS/2 Synaptics TouchPad: initialized for absolute axes.
[ 12819.547] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[ 12819.547] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 0
[ 12819.547] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[ 12819.547] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 12819.548] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse2)
[ 12819.548] (II) No input driver/identifier specified (ignoring)
[ 12819.552] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/event6)
[ 12819.552] (II) No input driver/identifier specified (ignoring)
[ 12819.553] (II) config/udev: Adding input device Sony Vaio Jogdial (/dev/input/mouse1)
[ 12819.553] (II) No input driver/identifier specified (ignoring)
[ 12819.740] (II) Sony Vaio Keys: Close
[ 12819.740] (II) UnloadModule: "evdev"
[ 12819.740] (II) Unloading evdev
[ 12819.850] (II) Video Bus: Close
[ 12819.850] (II) UnloadModule: "evdev"
[ 12819.850] (II) Unloading evdev
[ 12819.850] (II) Power Button: Close
[ 12819.850] (II) UnloadModule: "evdev"
[ 12819.850] (II) Unloading evdev
[ 12819.860] (II) UVC Camera (05ca:18b5): Close
[ 12819.860] (II) UnloadModule: "evdev"
[ 12819.860] (II) Unloading evdev
[ 12819.870] (II) Logitech USB-PS/2 Optical Mouse: Close
[ 12819.870] (II) UnloadModule: "evdev"
[ 12819.870] (II) Unloading evdev
[ 12819.870] (II) AT Translated Set 2 keyboard: Close
[ 12819.870] (II) UnloadModule: "evdev"
[ 12819.870] (II) Unloading evdev
[ 12819.870] (II) SynPS/2 Synaptics TouchPad: Close
[ 12819.870] (II) UnloadModule: "evdev"
[ 12819.870] (II) Unloading evdev
[ 12821.453] ddxSigGiveUp: Closing log

[Launchpad Janitor (janitor)]

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

[forevertheuni (forevertheuni)]

I don't really thing the problem is nvidia related. If I remove nvidia 3rd party drivers and go with nv driver the same thing happens.
no gdm no lightdm , gdm is ok and startx is ok. It's like if when I do startx I don't have .xstartup file....I purged lightdm and gdm and installed again..still same problem.

[forevertheuni (forevertheuni)]

Can someone close this. I've found it. It was related to /etc/ld.so.conf I had a usr/bin/env LD_LIBRARY_PATH=/usr/lib32/nvidia-current/ in /etc/X11/Xsession.d/90preserve_ld_library_path and that was the problem I removed the line I had added in the past and now it works.

[kapouer (kapouer)]

I have the exact same symptoms (with ddxSigGiveUp as last line) but never added a line in /etc/X11/Xsession.d/
I'll check if i see something in 90preserve_ld_library_path (computer is away right now).

[forevertheuni (forevertheuni)]

hi. Check all the files in /etc/ld.so.conf.d and /etc/X11/Xsession.d . It you added a line that ruins everything..I think that this is the place to look for. Either that or make a vbox with ubuntu with a fresh install and replace these two directories with original ones ;).
Good luck