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I am using Ubuntu 12.04 on a Samsung 530U3B laptop. Screen blinks on adjusting the brightness and CPU load grow up to 100%.

Video device: Intel(R) Extreme Graphics 3 Controller.

Seems like it started after kernel upgrade to 3.2.0-27-generic-pae.

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    Experiencing the same issues on Samsung 900X3A.
    – hleinone
    Jul 25, 2012 at 11:04

2 Answers 2

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I was able to fix this problem by installing the samsung-backlight from Linux on my Samsung PPA.

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  • samsung-backlight is really helpful!!! Thank you! Jul 25, 2012 at 13:45
  • Works on 900X3A after reboot, but there's no brightness indicator anymore. Thanks!
    – l0b0
    Sep 8, 2012 at 13:33
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Notebook NP530U3B.

I solved this:

cat /etc/madprobe.d/blacklist-samsung.conf
blacklist samsung_laptop
blacklist samsung_backlight #if you have

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