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Login Loop on Ubuntu 18.04.1

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0

I am a beginner Linux user and have been using, as mentioned, Ubuntu 18.04.1 for about three months. So far, since I know I lack sufficient experience, I have avoided messing with anything tricky or dangerous-looking in the command-line.

Then, a couple days ago, I ran into a problem. After rebooting my computer, and typing in my password as usual, the screen went black for a few seconds, and then showed up at the login manager again. And again. And again. The Login Loop. I've heard of it before.

So obviously, what caused it, and how do I fix it?

That's what I need help with.

I was aware that this question has been asked before, so I looked around to see if I could find some things out. First, I found out that my login manager was GDM3, and there could be problems with that.
So I tried installing LightDM and using that instead. No luck.

Next, I tried using the Cinnamon desktop environment that I had installed several weeks ago. That didn't work either. Something came up about Cinnamon needing to be restarted, which it never successfully did.

Note: I did not have Cinnamon running when I ran into this problem, I only tested it briefly a while ago. My current desktop environment is the default that was there when I first installed Ubuntu. I assume that is called 'Ubuntu' or 'Gnome', but I don't really know.

Then I read something about the Xauthority file possibly causing an issue. I used something like cat ~/ .xsession-errors to check that and it showed my username as still owning it. So apparently no problem there.

Later, I was able to install the Lubuntu desktop environment and successfully log in to my account. That's a far cry from my original position though, and the problem still isn't fixed.

I really have no idea how the problem started though.
The only unusual things I can think I did before the problem started were:

1. Installed Alacarte from software manager to edit application icon.




2. Used sudo nautilus in the terminal to get into some files that were locked. This was in regards to the application icon I was trying to change; nothing system-related.

I did nothing else out of the ordinary before the reboot.

Any help on how to diagnose and fix this Login Loop would be greatly appreciated.

18.04 login lightdm desktop-environments gdm

share

asked 7 mins ago

KalebKaleb

112

add a comment | 

0

I am a beginner Linux user and have been using, as mentioned, Ubuntu 18.04.1 for about three months. So far, since I know I lack sufficient experience, I have avoided messing with anything tricky or dangerous-looking in the command-line.

Then, a couple days ago, I ran into a problem. After rebooting my computer, and typing in my password as usual, the screen went black for a few seconds, and then showed up at the login manager again. And again. And again. The Login Loop. I've heard of it before.

So obviously, what caused it, and how do I fix it?

That's what I need help with.

I was aware that this question has been asked before, so I looked around to see if I could find some things out. First, I found out that my login manager was GDM3, and there could be problems with that.
So I tried installing LightDM and using that instead. No luck.

Next, I tried using the Cinnamon desktop environment that I had installed several weeks ago. That didn't work either. Something came up about Cinnamon needing to be restarted, which it never successfully did.

Note: I did not have Cinnamon running when I ran into this problem, I only tested it briefly a while ago. My current desktop environment is the default that was there when I first installed Ubuntu. I assume that is called 'Ubuntu' or 'Gnome', but I don't really know.

Then I read something about the Xauthority file possibly causing an issue. I used something like cat ~/ .xsession-errors to check that and it showed my username as still owning it. So apparently no problem there.

Later, I was able to install the Lubuntu desktop environment and successfully log in to my account. That's a far cry from my original position though, and the problem still isn't fixed.

I really have no idea how the problem started though.
The only unusual things I can think I did before the problem started were:

1. Installed Alacarte from software manager to edit application icon.




2. Used sudo nautilus in the terminal to get into some files that were locked. This was in regards to the application icon I was trying to change; nothing system-related.

I did nothing else out of the ordinary before the reboot.

Any help on how to diagnose and fix this Login Loop would be greatly appreciated.

18.04 login lightdm desktop-environments gdm

share

asked 7 mins ago

KalebKaleb

112

add a comment | 

I am a beginner Linux user and have been using, as mentioned, Ubuntu 18.04.1 for about three months. So far, since I know I lack sufficient experience, I have avoided messing with anything tricky or dangerous-looking in the command-line.

Then, a couple days ago, I ran into a problem. After rebooting my computer, and typing in my password as usual, the screen went black for a few seconds, and then showed up at the login manager again. And again. And again. The Login Loop. I've heard of it before.

So obviously, what caused it, and how do I fix it?

That's what I need help with.

I was aware that this question has been asked before, so I looked around to see if I could find some things out. First, I found out that my login manager was GDM3, and there could be problems with that.
So I tried installing LightDM and using that instead. No luck.

Next, I tried using the Cinnamon desktop environment that I had installed several weeks ago. That didn't work either. Something came up about Cinnamon needing to be restarted, which it never successfully did.

Note: I did not have Cinnamon running when I ran into this problem, I only tested it briefly a while ago. My current desktop environment is the default that was there when I first installed Ubuntu. I assume that is called 'Ubuntu' or 'Gnome', but I don't really know.

Then I read something about the Xauthority file possibly causing an issue. I used something like cat ~/ .xsession-errors to check that and it showed my username as still owning it. So apparently no problem there.

Later, I was able to install the Lubuntu desktop environment and successfully log in to my account. That's a far cry from my original position though, and the problem still isn't fixed.

I really have no idea how the problem started though.
The only unusual things I can think I did before the problem started were:

1. Installed Alacarte from software manager to edit application icon.




2. Used sudo nautilus in the terminal to get into some files that were locked. This was in regards to the application icon I was trying to change; nothing system-related.

I did nothing else out of the ordinary before the reboot.

Any help on how to diagnose and fix this Login Loop would be greatly appreciated.

18.04 login lightdm desktop-environments gdm

share

asked 7 mins ago

KalebKaleb

112

share

asked 7 mins ago

KalebKaleb

112

share

asked 7 mins ago

KalebKaleb

112

asked 7 mins ago

KalebKaleb

112

asked 7 mins ago

KalebKaleb

112