Can turning off drm_kms_helper polling affect screen brightness control?

Posted by dodecaphonic on Ask Ubuntu See other posts from Ask Ubuntu or by dodecaphonic
Published on 2011-01-15T13:55:57Z Indexed on 2011/01/15 13:59 UTC
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I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question.

The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot.

Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

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