Failed to start session after upgrade to 14.04

https://ubuntuforums.org/showthread.php?t=2217895 Thread: Failed to start session after upgrade to 14.04 Thread Tools Display April 19th, 2014 #1 prashanta2 prashanta2 is offline 5 Cups of Ubuntu Join Date Feb 2014 Location Alajuela, Costa Rica Beans 21 Distro Ubuntu 13.10 Saucy Salamander Failed to start session after upgrade to 14.04 Hello, I just did an upgrade to 14.04 Ubuntu. I had 13.10 with Mate Desktop. After upgrade and reboot, the system does not log in anymore. It just says "Failed to start session" I guess mate crashed and know the system can't log in. What can I do? Big thanks, Pedro Advanced reply Adv Reply April 19th, 2014 #2 prashanta2 prashanta2 is offline 5 Cups of Ubuntu Join Date Feb 2014 Location Alajuela, Costa Rica Beans 21 Distro Ubuntu 13.10 Saucy Salamander Re: Failed to start session after upgrade to 14.04 One additional info. In the log in screen I go to terminal Ctrl+Alt+F1 after sudo su code I type password and get - login incorrect Advanced reply Adv Reply April 19th, 2014 #3 prashanta2 prashanta2 is offline 5 Cups of Ubuntu Join Date Feb 2014 Location Alajuela, Costa Rica Beans 21 Distro Ubuntu 13.10 Saucy Salamander Re: Failed to start session after upgrade to 14.04 Somehow I got it to work... don't know what I did... Advanced reply Adv Reply April 19th, 2014 #4 Abhilash_Nayak Abhilash_Nayak is offline First Cup of Ubuntu Join Date Apr 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 I faced the same problem after the upgrade.. I tried to install Gnome env. and surprisingly this got fixed. $ sudo apt-get install gnome $ sudo reboot After the reboot I selected Gnome environment first, but then I tried my luck with Ubuntu env. and wola! I was able to login.. Advanced reply Adv Reply April 22nd, 2014 #5 charlyoleg2 charlyoleg2 is offline First Cup of Ubuntu Join Date Apr 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 I face the same issue after updating from 12.04 to 14.04. Your workaround doesn't work in my case I have seen this debug messages in the lightdm log: > sudo cat /var/log/lightdm/lightdm.log DEBUG: Seat: Failed to find session configuration ubuntu DEBUG: Seat: Can't find session ubuntu I'm still looking for a solution! Last edited by charlyoleg2; April 22nd, 2014 at 10:45 AM. Advanced reply Adv Reply April 22nd, 2014 #6 ivan-janes ivan-janes is offline Spilled the Beans Join Date Aug 2013 Beans 12 Re: Failed to start session after upgrade to 14.04 Try to install ubuntu-session package as suggested on http://osdir.com/ml/ubuntu-bugs/2014-04/msg13063.html Code: sudo apt-get install ubuntu-session If it is installed try to reinstall it with: Code: sudo apt-get install --reinstall ubuntu-session Advanced reply Adv Reply April 23rd, 2014 #7 moorkai moorkai is offline First Cup of Ubuntu Join Date Jun 2013 Beans 1 Re: Failed to start session after upgrade to 14.04 Tried ivan-janes' solution. Sadly, it didn't work for me. Changing user-session from ubuntu to mate in /etc/lightdm/lightdm.conf did the trick instead. Advanced reply Adv Reply May 14th, 2014 #8 ron20 ron20 is offline First Cup of Ubuntu Join Date May 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 I had the same problem and this solution worked for me. Quote Originally Posted by ivan-janes View Post Try to install ubuntu-session package as suggested on http://osdir.com/ml/ubuntu-bugs/2014-04/msg13063.html Code: sudo apt-get install ubuntu-session If it is installed try to reinstall it with: Code: sudo apt-get install --reinstall ubuntu-session Advanced reply Adv Reply July 17th, 2014 #9 Tony_Pellicccio Tony_Pellicccio is offline First Cup of Ubuntu Join Date Jul 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 Thanks to all of you. I went from 12.04LTS to 14.04LTS. The upgrade was a nightmare. I mean are they that clueless at Canonical that they couldn't do a proper upgrade? Really? Now I just have to get my networking running again and I'll be back in business. But being out of service for a few days, that wasn't cute. Making me really re-think using Ubuntu. Advanced reply Adv Reply July 24th, 2014 #10 rafael.lopez011 rafael.lopez011 is offline First Cup of Ubuntu Join Date Dec 2013 Beans 2 Re: Failed to start session after upgrade to 14.04 Once I pressed ctr+alt+F1 or F2 .....or F6 the command line appear but request me the login and password. Once I entered the username and password it request me the password. Then 'Login incorrect' message appear. if I put the sudo and rest of the commands it does not work. Please help. Also have tried booting from the USB with Ubuntu 14.04 LTS then open the terminal and then I'm able to execute the lines but after reinstall the session it is doing the same. Please help Thread: Failed to start session after upgrade to 14.04 Thread Tools Display July 24th, 2014 #11 rafael.lopez011 rafael.lopez011 is offline First Cup of Ubuntu Join Date Dec 2013 Beans 2 Re: Failed to start session after upgrade to 14.04 do you figure out what did you do? I have the same problem? Advanced reply Adv Reply July 25th, 2014 #12 Jeton_Sinoimeri Jeton_Sinoimeri is offline First Cup of Ubuntu Join Date Jul 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 I had the same problem, I upgraded from 12.04 to 14.04. I pressed CTR-ALT-F3 and then logged in using my credentials, then typed in sudo apt-get install, and put in my password. I let it finish then restarted the computer and was able to log in Advanced reply Adv Reply October 23rd, 2014 #13 derrick3 derrick3 is offline First Cup of Ubuntu Join Date Oct 2014 Beans 1 Re: Failed to start session after upgrade to 14.04 When it says Login "Incorrect" you probably typed something wrong. Remember capitaliztion matters on both USER and PASS and make sure you type in the right password. Advanced reply Adv Reply January 28th, 2015 #14 jiwon21c jiwon21c is offline First Cup of Ubuntu Join Date Jan 2015 Beans 1 Re: Failed to start session after upgrade to 14.04 This made it clear the problem in my case. Thanks a lot. Advanced reply Adv Reply August 5th, 2015 #15 Kuan-Hsun Kuan-Hsun is offline First Cup of Ubuntu Join Date Aug 2015 Beans 1 Re: Failed to start session after upgrade to 14.04 It is still work for me as well. My case is that after updating the system as usual, I cannot log in the system. Originally Posted by ivan-janes Try to install ubuntu-session package as suggested on http://osdir.com/ml/ubuntu-bugs/2014-04/msg13063.html Code: sudo apt-get install ubuntu-session If it is installed try to reinstall it with: Code: sudo apt-get install --reinstall ubuntu-session Advanced reply Adv Reply August 6th, 2015 #16 mmercado mmercado is offline First Cup of Ubuntu Join Date Jan 2009 Beans 5 Re: Failed to start session after upgrade to 14.04 None of these options worked for me. In case it helps someone, what I did was I downgraded my NVIDIA graphics package and it worked. It is strange that this solved the issue because I could see the login screen and for a second my custom background before it would go back to the login screen.