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I want to use ubuntu 16.04 on my laptop so I use a bootable USB to install the system.

Now I want to install NVIDIA driver... another story, skip it. Anyway I need to use tty to install the driver as I need to shut down X server.

But when I use ctrl+alt+F1~6 to enter the tty, nothing happens. The situation is, first I login to my user, stay on the desktop. I press ctrl+alt+f1, then my mouse disappear, and the GUI directly got frozen (I test it by playing a youtube video and press the keys).

It looks like I stucked at somethere because if I press ctrl+alt+f7 the GUI goes back to working. The same thing happens if I tried to enter tty at the login page without logging into my account.

Can anyone help? I can update any information about the system if you need. Thank you.

Edit:

I've read this thread Boot hangs after installing the latest driver from PPA and Ctrl+Alt+F1 keyboard shortcut doesn't work

Now I finished step 2 and stucked before enter step 3. After selecting the recovery mode, I only have 'loading linux 4.13.0-36 generic' and 'loading initial ramdisk' these two lines appear, no menu like it is supposed to be in step 3

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    The X server suspends its clients when its tty gets backgrounded which is why the GUI freezes. – dsstorefile1 May 6 '18 at 2:38
  • @karel will have a try now. – Kulbear May 6 '18 at 2:44
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    Please comment if it doesn't work so we can try to fix it another way. – karel May 6 '18 at 2:45
  • @karel Of course, now I finished step 2 and stucked before enter step 3. After selecting the recovery mode, I only have 'loading linux 4.13.0-36 generic' and 'loading initial ramdisk' these two lines appear, no menu like it is supposed to be in step 3. – Kulbear May 6 '18 at 2:54
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    @karel I boot the laptop with my USB and select try ubuntu without installation, now I am at the desktop and still cannot enter tty. – Kulbear May 6 '18 at 3:10

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