11

Occasionally my lock screen does this:

No password input

That makes logging in difficult. Restarting Unity kind of works, sometimes only a reboot will fix it. My video card is a Sapphire Radeon HD 6870 with dual displays using the open drivers.

Community
  • 1
Andy Gaskell
  • 210

4 Answers4

4

Reloading unity restores the password input on the login screen for me (Ubuntu 14.04 with a Nvidia GPU).

  1. Switch to an alternate terminal using Ctrl+Alt+F1.

  2. Reload unity with:

    nohup unity --replace &

  3. Switch back to your graphical terminal using Ctrl+Alt+F7. You may have to wait several seconds if you see a black screen.

Unity sort of works after this but you can at least save your work in progress:

  • The compiz grid plugin seems to think multiple monitors are now a single monitor.

  • The global menu bar no longer works.

  • Menus in window title bars no longer work (if enabled).

  • Custom global keyboard shortcuts don't work.

ohmu
  • 731
0

This can be worked around without losing your session by:

  1. Switch to a tty (e.g. Ctrl+Alt+F1)
  2. Log in
  3. Run: sudo loginctl unlock-sessions
  4. Switch back to the Desktop: Ctrl+Alt+F7 (or F8).

From the bug report fori this issue and this answer to a similar question

Gabriel Grant
  • 161
0

I had the same problem on an HP with Radeon 6370 graphics. I'm still using open source graphics, but I'm using the versions that came from the oibaf repository - they are a little 'edgier' than the stock open source, but not as edgy as xorg-edgers.

sudo add-apt-repository ppa:oibaf/graphics-drivers
sudo apt-get update
sudo apt-get upgrade

installs the drivers

sudo apt-get install ppa-purge
sudo ppa-purge ppa:oibaf/graphics-drivers

removes the drivers.

Charles Green
  • 21,859
0

open terminal
CTRL+ALT+F3

reset the unity 

$ unity-reset
$ setsid unity

if that didnt workout try to re-install the unity & the desktop

$ sudo apt-get autoremove ubuntu-desktop 
$ sudo apt-get autoremove unity 
$ sudo apt-get update 
$ sudo apt-get install unity
$ sudo apt-get install unity-2d 
$ sudo apt-get install ubuntu-desktop 
$ sudo shutdown -r

now install the ati driver 

$ sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
$ sudo apt-get update
$ sudo apt-get install fglrx gksu
$ sudo amdconfig --initial && sudo shutdown -r

after the reboot
u can run the driver buy ALT + F2
copy & past this 

gksu amdcccle
hwez
  • 3,026