Brightness problem on a Samsung 530U3B

Question

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.

hleinone · Accepted Answer · 2012-07-25 11:53:49Z

up vote 5 down vote accepted

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

answered Jul 25 '12 at 11:53

hleinone
3501213

	samsung-backlight is really helpful!!! Thank you! – Alexey Plutakhin Jul 25 '12 at 13:45
	Works on 900X3A after reboot, but there's no brightness indicator anymore. Thanks! – l0b0 Sep 8 '12 at 13:33

Eliah Kagan · Answer 2 · 2012-07-31 20:54:27Z

up vote 0 down vote

Notebook NP530U3B.

I solved this:

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

edited Jul 31 '12 at 20:54

Eliah Kagan
23.9k854136

answered Jul 31 '12 at 6:49

ilya
1

2 Answers