12.04 64-bit in Unity 3D with ATI graphics. (Dell Inspirion laptop) Same EXACT problem.
What happened, was I was in a session when my battery ran down to about 6%. I put it to sleep instead of shutting down. It remained asleep until the battery fully-drained. When I plugged it back in and restarted, I encountered this problem. I renamed my .Xauthority -> .Xauthority.old (taking advice from a Ubuntu Forums poster, who suggested deleting all items in the home directory that start with ".", one by one, until the problem is resolved. . . - I renamed .conf, .gnome2, .gconf, a few others. . . but by renaming BACK, isolated the problem to .Xauthority). When the ONLY configuration delta was .Xauthority (the new file, and all of my old ~/. directories were restored), I was able to log back-in, but I only saw my desktop, (and conky). All the Unity elements were missing. No launcher, no menu-bar, and the popup thing didn't respond to the "windows" key. (various things would also crash, at random: colord, and compiz). But it was definitely a different symptom than being kicked right back to the login prompt as before. I tried to chown .Xauthority to my user, but that did not fix the problem. -- 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/1036830 Title: Can't log in unless remove .Xauthority or use gdm Status in “lightdm” package in Ubuntu: New Bug description: On 8/13/2012 I updated ubuntu 12.10. Now when I try to log in the system flashes a black screen and then puts me back at the log in screen. Logging in as guest works. I tried adding a new user and cannot log in with that user either. I switched to gdm and logging in works fine. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xorg 1:7.7+1ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-10.10-generic 3.5.1 Uname: Linux 3.5.0-10-generic x86_64 ApportVersion: 2.4-0ubuntu6 Architecture: amd64 Date: Tue Aug 14 13:24:06 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:04a9] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: Dell Inc. Latitude E6220 ProcEnviron: LANGUAGE=en_US:en TERM=linux PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-10-generic root=UUID=94ff83ca-e880-49d3-8791-cdd2999ea806 ro quiet splash elevator=deadline vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: No upgrade log present (probably fresh install) XorgConf: section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "sna" EndSection dmi.bios.date: 05/17/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0D1CTR dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd05/17/2012:svnDellInc.:pnLatitudeE6220:pvr01:rvnDellInc.:rn0D1CTR:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6220 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu2 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.38-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.12.1.902-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~really6.14.4-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-1build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1036830/+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

