I am running 14.04.2 LTS. I want to change the time it takes to automatically lock the screen when I step away, but there is no Brightness & Lock option listed under the System Settings. I have searched using the Unity search icon on the side ribbon, but no success. How do I add or restore that function? Thanks in advance.!

1 Answer 1


Actually, brightness settings are not listed under settings, AFAIK. I just checked. Instead, they are either on your monitor, embedded in your laptop (if you use one) or are with your graphics drivers. Usually, with an AMD GPU, typing gksudo amdcccle will open the Catalyst Control Center--here, you can edit brightness. Example: Catalyst Control Center

If you use NVIDIA, just a search for "NVIDIA" in the dash should bring up a config.

  • waterlubber: thanks for replying - I appreciate learning that. However, I want to adjust the screen lock time, and according to the Ubuntu Help menu under the upper-right hand gear icon on my screen, that feature should be under the "Brightness & Lock" feature. But I don't have that feature listed on my system. May 22, 2015 at 22:22
  • I'm sorry, I misinterpreted your question. What kind of computer do you have? Drivers? You may be missing part of your gnome config...here's what mine looks like. i.snag.gy/ytK97.jpg May 22, 2015 at 22:31
  • No worries, waterlubber. I am using a desktop HP Compaq 6000 Pro. Not sure about the drivers as I thought ubuntu automatically loaded whatever it needs. Certainly possible that I'm missing part of Gnome as Unity appears to be in control here. Here's my System Settings menu: postimg.org/image/wgdjzpz01 May 22, 2015 at 22:41
  • Wow! That's totally different from what I expected! You are certainly missing a few components. Did you install kubuntu, or another variant, by mistake? Try looking up the unity control/gnome center in dash. For comparison, this is what mine looks like (with a theme): i.snag.gy/4abDC.jpg May 22, 2015 at 22:48
  • As far as I know, I installed the full ubuntu 14.04 on my machine. I downloaded it from ubuntu.com last year when I bought my machine. When I searched for "gnome", here's what was returned: postimg.org/image/mighct17j May 22, 2015 at 22:52

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .