I just installed Fedora 18 on my ASUS K55VD laptop 2 days ago, I've noticed that when i try to adjust the screen brightness in KDE either with the fn keys or with the GUI in the power management or the using the slider when clicking on the battery icon, All i get is the brightness bar comes up and changes but almost instantly reverts to 90%.
Now, I'm not entirely new to Arch, but I have no idea how to diagnose this. While using my laptop with the backlight set to anything <100%, after a random interval of time independent of KB/mouse activity, the screen brightness will shoot back up to 100%. I'm running an Xfce4 DE, and the computer's a Lenovo W520.
Tested under Ubuntu 10.04 Lucid Lynx. The following BIOS settings are necessary in order for suspend/sleep functionality to work correctly. Under the 'Power' section in the BIOS: - "Suspend Mode" should be set to "S3 Only" - "Repost Video on S3 Resume...
For those of you still running these old soldiers like myself, I have discovered an interesting article that works great. I have noticed on most all G92 65nm (8800GT/GTS, 9600GSO, 8800GS, 9800GT etc.) based cards I have come across that they are set to run at full speed all the time....putting off excess heat and consuming too much power.
Well - my first gut thought is that the / filesystem is not being mounted upon resume from suspend?? I guess...The pre-suspend OS state seems to be read from memory, but perhaps the motherboard BIOS HDD power management state is not being read correctly - leaving the HDDs in limbo...Questions:1. Did suspend/resume function correctly before you upgraded to jessie? Or was that not tried?2.
In Windows 7 or Ubuntu, there is the power management option for you to customize things like what to do when laptop battery is low, hard drive behavior when you are using battery, what to do when you press the power button ... However, in Linux Mint 13 - MATE edition, you will not find the power management option the Mint Menu.
I think I made a mistake with a fresh install of 13.10 32-bit on Samsung NC10 atom powered netbook.
When I put the battery in and start up I get GUI issues and have no battery options for power management in System Settings Power Management.