Can not log in to my 18.04 LTS ubuntu












0















Everytime I am trying to login to my ubuntu, it takes the password. It shows me a glimpse of an unlocked screen (not even full) and with some black flashes goes back to the lockscreen.

Previous to this I had been doing a log-out and a log-in for some changes in the tweak tool and also turning on some Extensions. (Application menu, etc., etc.).










share|improve this question

























  • Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

    – Podesta
    Mar 16 at 2:21











  • I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

    – Shadman Seetab
    Mar 16 at 8:08











  • You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

    – Thorbjørn Ravn Andersen
    Mar 16 at 14:47











  • Thanks. But decided to again installing ubuntu using pendrive.

    – Shadman Seetab
    Mar 16 at 16:24
















0















Everytime I am trying to login to my ubuntu, it takes the password. It shows me a glimpse of an unlocked screen (not even full) and with some black flashes goes back to the lockscreen.

Previous to this I had been doing a log-out and a log-in for some changes in the tweak tool and also turning on some Extensions. (Application menu, etc., etc.).










share|improve this question

























  • Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

    – Podesta
    Mar 16 at 2:21











  • I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

    – Shadman Seetab
    Mar 16 at 8:08











  • You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

    – Thorbjørn Ravn Andersen
    Mar 16 at 14:47











  • Thanks. But decided to again installing ubuntu using pendrive.

    – Shadman Seetab
    Mar 16 at 16:24














0












0








0


0






Everytime I am trying to login to my ubuntu, it takes the password. It shows me a glimpse of an unlocked screen (not even full) and with some black flashes goes back to the lockscreen.

Previous to this I had been doing a log-out and a log-in for some changes in the tweak tool and also turning on some Extensions. (Application menu, etc., etc.).










share|improve this question
















Everytime I am trying to login to my ubuntu, it takes the password. It shows me a glimpse of an unlocked screen (not even full) and with some black flashes goes back to the lockscreen.

Previous to this I had been doing a log-out and a log-in for some changes in the tweak tool and also turning on some Extensions. (Application menu, etc., etc.).







18.04 login screen






share|improve this question















share|improve this question













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edited Mar 17 at 9:32









oh.dae.su

19516




19516










asked Mar 16 at 0:18









Shadman SeetabShadman Seetab

12




12













  • Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

    – Podesta
    Mar 16 at 2:21











  • I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

    – Shadman Seetab
    Mar 16 at 8:08











  • You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

    – Thorbjørn Ravn Andersen
    Mar 16 at 14:47











  • Thanks. But decided to again installing ubuntu using pendrive.

    – Shadman Seetab
    Mar 16 at 16:24



















  • Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

    – Podesta
    Mar 16 at 2:21











  • I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

    – Shadman Seetab
    Mar 16 at 8:08











  • You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

    – Thorbjørn Ravn Andersen
    Mar 16 at 14:47











  • Thanks. But decided to again installing ubuntu using pendrive.

    – Shadman Seetab
    Mar 16 at 16:24

















Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

– Podesta
Mar 16 at 2:21





Wihtout knowing exactly what settings you changed it is hard to help you. A solution would be opening a different tty pressing ctrl + alt + f2 and logging in with your user. Then you can either attempt to fix whatever you messed up or create a new user and go from there.

– Podesta
Mar 16 at 2:21













I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

– Shadman Seetab
Mar 16 at 8:08





I think I have problems with my ubuntu desktop enviroment. Searched for some solution and got one where I was told to try installing Lubuntu Desktop environment. Now when I log in to the lubuntu desktop environment it works just fine. But Can't log in using Ubuntu desktop environment. Can you help me get back My ubuntu desktop environment? Thanks in advance.

– Shadman Seetab
Mar 16 at 8:08













You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

– Thorbjørn Ravn Andersen
Mar 16 at 14:47





You probably broke your configuration files, try switching to a text console (Ctrl-Alt-F2 or similar) and log in there to see what happens.

– Thorbjørn Ravn Andersen
Mar 16 at 14:47













Thanks. But decided to again installing ubuntu using pendrive.

– Shadman Seetab
Mar 16 at 16:24





Thanks. But decided to again installing ubuntu using pendrive.

– Shadman Seetab
Mar 16 at 16:24










1 Answer
1






active

oldest

votes


















0














If you've been starting graphic applications from the terminal using sudo, that's what probably caused your problem. Always use sudo -H.




  • boot to the GRUB menu

  • choose Advanced Options

  • choose Recovery mode

  • choose Root access

  • at the # prompt, type:



    • sudo mount -o remount,rw / # remount the disk as rw


    • cd /home/your_username # change directory


    • ls -al .*thority* # list some files




You should see something like this...



-rw------- 1 your_username your_username 407910 Nov  2 08:56 .ICEauthority
-rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority


If it DOES NOT show -rw------- then...





  • sudo chmod 600 .*thority* # change file protection


If it DOES SHOW root root then...




  • sudo chown your_username:your_username .*thority* # change file ownership


  • reboot # reboot the computer



Reboot and see if you can log in.






share|improve this answer
























  • This didn't work. But thanks . again installed linux.

    – Shadman Seetab
    Mar 16 at 16:28











  • @ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

    – heynnema
    Mar 16 at 16:30













  • Yeah. I have Nvidia

    – Shadman Seetab
    Mar 17 at 9:34











  • @ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

    – heynnema
    Mar 17 at 13:01











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














If you've been starting graphic applications from the terminal using sudo, that's what probably caused your problem. Always use sudo -H.




  • boot to the GRUB menu

  • choose Advanced Options

  • choose Recovery mode

  • choose Root access

  • at the # prompt, type:



    • sudo mount -o remount,rw / # remount the disk as rw


    • cd /home/your_username # change directory


    • ls -al .*thority* # list some files




You should see something like this...



-rw------- 1 your_username your_username 407910 Nov  2 08:56 .ICEauthority
-rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority


If it DOES NOT show -rw------- then...





  • sudo chmod 600 .*thority* # change file protection


If it DOES SHOW root root then...




  • sudo chown your_username:your_username .*thority* # change file ownership


  • reboot # reboot the computer



Reboot and see if you can log in.






share|improve this answer
























  • This didn't work. But thanks . again installed linux.

    – Shadman Seetab
    Mar 16 at 16:28











  • @ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

    – heynnema
    Mar 16 at 16:30













  • Yeah. I have Nvidia

    – Shadman Seetab
    Mar 17 at 9:34











  • @ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

    – heynnema
    Mar 17 at 13:01
















0














If you've been starting graphic applications from the terminal using sudo, that's what probably caused your problem. Always use sudo -H.




  • boot to the GRUB menu

  • choose Advanced Options

  • choose Recovery mode

  • choose Root access

  • at the # prompt, type:



    • sudo mount -o remount,rw / # remount the disk as rw


    • cd /home/your_username # change directory


    • ls -al .*thority* # list some files




You should see something like this...



-rw------- 1 your_username your_username 407910 Nov  2 08:56 .ICEauthority
-rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority


If it DOES NOT show -rw------- then...





  • sudo chmod 600 .*thority* # change file protection


If it DOES SHOW root root then...




  • sudo chown your_username:your_username .*thority* # change file ownership


  • reboot # reboot the computer



Reboot and see if you can log in.






share|improve this answer
























  • This didn't work. But thanks . again installed linux.

    – Shadman Seetab
    Mar 16 at 16:28











  • @ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

    – heynnema
    Mar 16 at 16:30













  • Yeah. I have Nvidia

    – Shadman Seetab
    Mar 17 at 9:34











  • @ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

    – heynnema
    Mar 17 at 13:01














0












0








0







If you've been starting graphic applications from the terminal using sudo, that's what probably caused your problem. Always use sudo -H.




  • boot to the GRUB menu

  • choose Advanced Options

  • choose Recovery mode

  • choose Root access

  • at the # prompt, type:



    • sudo mount -o remount,rw / # remount the disk as rw


    • cd /home/your_username # change directory


    • ls -al .*thority* # list some files




You should see something like this...



-rw------- 1 your_username your_username 407910 Nov  2 08:56 .ICEauthority
-rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority


If it DOES NOT show -rw------- then...





  • sudo chmod 600 .*thority* # change file protection


If it DOES SHOW root root then...




  • sudo chown your_username:your_username .*thority* # change file ownership


  • reboot # reboot the computer



Reboot and see if you can log in.






share|improve this answer













If you've been starting graphic applications from the terminal using sudo, that's what probably caused your problem. Always use sudo -H.




  • boot to the GRUB menu

  • choose Advanced Options

  • choose Recovery mode

  • choose Root access

  • at the # prompt, type:



    • sudo mount -o remount,rw / # remount the disk as rw


    • cd /home/your_username # change directory


    • ls -al .*thority* # list some files




You should see something like this...



-rw------- 1 your_username your_username 407910 Nov  2 08:56 .ICEauthority
-rw------- 1 your_username your_username 58 Jun 23 2017 .Xauthority


If it DOES NOT show -rw------- then...





  • sudo chmod 600 .*thority* # change file protection


If it DOES SHOW root root then...




  • sudo chown your_username:your_username .*thority* # change file ownership


  • reboot # reboot the computer



Reboot and see if you can log in.







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 16 at 14:42









heynnemaheynnema

20.9k22360




20.9k22360













  • This didn't work. But thanks . again installed linux.

    – Shadman Seetab
    Mar 16 at 16:28











  • @ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

    – heynnema
    Mar 16 at 16:30













  • Yeah. I have Nvidia

    – Shadman Seetab
    Mar 17 at 9:34











  • @ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

    – heynnema
    Mar 17 at 13:01



















  • This didn't work. But thanks . again installed linux.

    – Shadman Seetab
    Mar 16 at 16:28











  • @ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

    – heynnema
    Mar 16 at 16:30













  • Yeah. I have Nvidia

    – Shadman Seetab
    Mar 17 at 9:34











  • @ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

    – heynnema
    Mar 17 at 13:01

















This didn't work. But thanks . again installed linux.

– Shadman Seetab
Mar 16 at 16:28





This didn't work. But thanks . again installed linux.

– Shadman Seetab
Mar 16 at 16:28













@ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

– heynnema
Mar 16 at 16:30







@ShadmanSeetab It would have been much better to give detailed feedback about what you saw while executing my procedure, and/or to fix the real problem with another solution, than to keep reinstalling Ubuntu. For example, it could be a problem with your video driver... do you have Nvidia?

– heynnema
Mar 16 at 16:30















Yeah. I have Nvidia

– Shadman Seetab
Mar 17 at 9:34





Yeah. I have Nvidia

– Shadman Seetab
Mar 17 at 9:34













@ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

– heynnema
Mar 17 at 13:01





@ShadmanSeetab I saw that you wiped your drive, so the problem may not even be there any more, but if it is, I'd recommend starting with the nomodeset parameter temporarily, just to see if this problem occurs. If it works, then you've probably got a Nvidia driver problem. Make sure you've got version 418.43.

– heynnema
Mar 17 at 13:01


















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