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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 11-10-2009, 07:14 PM   #1
kenshinji
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Registered: Apr 2004
Location: China
Distribution: Debian
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Unhappy Can't adjust brightness on X200


I installed an debian lenny on my X200 laptop,and upgrade kernel to 2.6.30,then I found that I can't adjust the brightness by Fn keys.But I could adjust the brightness by Fn keys on the kernel version of 2.6.26.It's really weird.
 
Old 11-11-2009, 07:54 PM   #2
exvor
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Registered: Jul 2004
Location: Phoenix, Arizona
Distribution: LFS-Version SVN-20091202, Arch 2009.08
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This is a kernel problem because of a bad mtrr it is a known issue but all the stuff I can find on it is back in 2.6.29 stuff someone suggested when doing a Google search to run
Code:
xrandr --output LVDS --set BACKLIGHT_CONTROL native
You can try that and see if it resolves the issue. I suspect tho its something in the kernel options that is causing it.
 
  


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