[Bug 568611] Re: Screen brightness control fails on Dell Studio 1558

[thugUA]

I've got Lenovo u350 laptop with intel 4500hd graphics and Ubuntu 10.10.
After installing your kernel, brightness regulation works fine, but in a
little while (10-20min) the system's interface starting to freeze:
graphics draw very slow, when writing in console, letters appear not
immediately. Some time later it returns to normal. When I return to
native kernel, it doesn't happen. Do you have any idea how to fix this?

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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
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