imsolidstate Posted October 4, 2012 Share Posted October 4, 2012 I figured out what was wrong with my display being stuck on low brightness and how to fix it. It's CCFL backlit, not LED. The LED controller is probably different. If you have this problem and want to fix it yourself, see here: M17x inverter brightness fix » imsolidstate 6 Quote Link to comment Share on other sites More sharing options...
svl7 Posted October 5, 2012 Share Posted October 5, 2012 Excellent little hack!! It might also be possible to adjust the PWM duty cycle per MXM SIS, there's an entry for this in there, but I'm not sure whether it gets actually used. Quote Link to comment Share on other sites More sharing options...
imsolidstate Posted October 8, 2012 Author Share Posted October 8, 2012 Thanks svl7. I'm not sure the MXM signal would work, since I think the EC directly controls the brightness of the display alone. I don't think the PWM for brightness is muxed with the MXM connector. It would be a better fix though if it was possible. Quote Link to comment Share on other sites More sharing options...
Prasad Posted October 13, 2012 Share Posted October 13, 2012 I had similar problems on my M17x R4 whereby the brightness wouldn't reduce either by hardware button controls or software, no matter what I tried. A simple BIOS reflash got it working for me! 1 Quote Link to comment Share on other sites More sharing options...
Guest Alienware-L_Porras Posted October 15, 2012 Share Posted October 15, 2012 Thanks for sharing that info. +1Rep. Quote Link to comment Share on other sites More sharing options...
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