No Brightness Control After Sleep

Hi there, the problem here is that as my laptop comes out of sleep it looses the brightness control - the corresponding buttons don’t respond. The screen is very bright. Before sleep it works fine. Anybody know if it can be fixed?
Specs: Dell Inspiron N5010
i3 CPU M 350
[AMD/ATI] Park [Mobility Radeon HD 5430/5450/5470]

OS: Netrunner 14
System: Linux 3.13.0-29-generic x86_64
KDE: 4.13.1
ext4 file system

Are you using the free (opensource) radeon or the non-free (proprietary) Catalyst drivers?

Radeon driver:
Catalyst driver:

Hi, I’m using a proprietary driver called FGLRX-Updates. Right after I installed Netrunner it came with the opensource driver, but it didn’t have the Catalist manager installed and I need it installed because it allows to make more adjustments to the driver to take off load from the graphics, you see… So I installed the fglrx one. From the Driver Manager menu. Is it problematic?
P.S. Here is what I got in the Terminal about this driver:
$ fglrxinfo
display: :0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Mobility Radeon HD 5000 Series
OpenGL version string: 4.3.12798 Compatibility Profile Context 13.35.1005

OK, well unfortunately it’s hard to diagnose issues with closed source software. Try using the opensource radeon driver and see if that works as expected, if it does then you’ll need to file a bug report to AMD on this issue.

Thank you!

Well, I tried both of them - the opensource driver works right, the flgrx doesn’t. Maybe there is a way to install the opensource while also having the Catalist manager available? Or, maybe, there is some 3-rd party brightness controller? Thanks.

There is no need for anything like the Catalyst Control Center with the radeon drivers, these driver work with the KDE brightness controls just like all the other drivers do.

Right click on the system tray and select System Tray Settings, Then on the Entries tab set battery to always visible. The battery indicator with the be in the tray even when plugged in to AC. When you click the battery icon in the system tray you’ll have the ability to adjust brightness as well as turn on and off Power Management. Then if you right click on the battery icon and select configure Power Management or look for it in the KDE’s System Settings control panel, you can change the all brightness level settings, the suspend and hibernate values, etc.

Well, when i click on the Battery icon the brightness does change, but it stays changed only as long as the battery options are open. As soon as I close them, the brightness gets back to max level.

For permanently changing the default brightness level you would need to set that under Systems Settings > Power Management, however as long as the battery indicator is in the tray the adjustment should stay, just like as if you used the brightness controls on your keyboard, if it’s not sticking then there is an issue elsewhere.

PS. You can also use the touch pads scroll motion or mouse scroll wheel over the battery icon (Indicator) to change the brightness.

If you need to do some tweaking to the drivers here are a few places to look:

Thanks, I’m trying to tweak the driver, but it keeps telling me : “permission denied”. Do you know by any chance how to obtain permission (root?) in Netrunner 14?

Less dangerous “sudo” command

More dangerous “su” command