Can not log into Ubuntu after update software and remove nvidia driver

Question

The story began when I updated the software (I swear I will not update it again in future). The updater installed nVidia driver (I don't know why the updater installed nvidia because the ubuntu I use can not see the nvidia graphics card installed; it's a VM on Windows that does not support 3D graphics). Then, after I reboot and log in, only a wallpaper writing "Ubuntu 14.04 LTS" lies on the desktop. Answers to Unity doesn't load, no Launcher, no Dash appears does not work to restore the unity left panel and topbar, so I checked and checked to convince myself that that's because of the nvidia driver. So I uninstalled nvidia driver completely using the answer to How can I uninstall a nvidia driver completely ?. Then I reboot. Then after I input my password in the login, the same login window comes out again, again and again. I have also tried all commands in unity and the tray are not displayed after login, but the same problem persists. Here is a hint: when I run ccsm, I got "can not open display" error as the picture below shows. I'm not sure it is exactly the cause of the problem and I can not solve this problem either. So I need your help to pull me out of this trouble. If you need any information, please comment. Thanks a lot.

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score 0 · Answer 1 · answered Dec 20 '14 at 07:02

0

It seems a lot of people are having boot issues with the latest update. It appears it has to do with the newest kernel. It happened to me as we'll and I had to reinstall everything before I did a little research. What worked for me was the following:

Restar your machine and press shift to get to the Grub menu and select a previous version from your kernel. Let me know if it boots. Tomorrow I once I'm at my office I can help you remove the new kernel.

answered Dec 20 '14 at 07:02

Darkhaund

1

@Thank you. I selected "ubuntu, with Linux 3.13.0-43-generic (recovery mode)" in Advanced options, then I saw a menu in http://tinypic.com/r/2s9ugsm/8, which item should I choose? or should I select other options in Advanced options? – user280121 Dec 20 '14 at 07:53
Hi, are you at office? – user280121 Dec 20 '14 at 20:50
Sorry, I had a RL emergency and couldn't make it. I will help u tomorrow step bu step. Also, you do NOT WANT that 43ish kernel. That is the faulty one. Do you see other kernel versions listed? – Darkhaund Dec 21 '14 at 02:42
Yes. Should I try the bare version or the version followed by (recovery mode)? – user280121 Dec 21 '14 at 03:26
Yes and if you can list me the kernel versions that appear please – Darkhaund Dec 21 '14 at 15:52
They are: 3.13.0-43-generic, 3.13.0-37-generic, 3.13.0-32-generic, 3.13.0-30-generic, 3.13.0-20-generic, 3.8.0-31-generic, with or without "(recovery mode)". – user280121 Dec 22 '14 at 06:12
Try to load the -37 generic in normal mode and tell me if it works – Darkhaund Dec 23 '14 at 02:11
I tried 37-generic, but not work; I still can't login. – user280121 Dec 23 '14 at 03:29
I'm doing research. Can u boot with any kernel version sr all? – Darkhaund Dec 28 '14 at 06:37
I tried all kernels. For all of them, I can boot, but I can not login – user280121 Dec 28 '14 at 07:06
U get a black screen? Or how far can you get? – Darkhaund Dec 28 '14 at 07:57
I'm on the login screen (LightDM, the display manager of ubuntu), input the password but the login screen appears again and again without taking me to unity. – user280121 Dec 28 '14 at 12:56
Ok I see. You are on a loop. Mmmmmm so no kernel version allows you to login? – Darkhaund Dec 30 '14 at 01:52
No. I don't think this is a kernel problem. This should be a simple configuration problem of LightDM used in ubuntu 14.04. – user280121 Dec 30 '14 at 12:24

Can not log into Ubuntu after update software and remove nvidia driver

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