Brightness on lenovo hardware

The SMI method on the X40 looks sorta like the PHSS method on the n100. It's protected by the same type of mutex and does a similar sort of SMI call. SMI is undocumented and thus difficult to understand. The SMI interface on the n100 is 40% similar to the X40 interface, although there's a lot missing on my lenovo. None of the cmos commands work, although that's not a big surprise. Lenovo, I would really appreciate a hand with this, even if it's just one of the BIOS engineers saying “it just won't work”.

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Richard has over 10 years of experience developing open source software. He is the maintainer of GNOME Software, PackageKit, GNOME Packagekit, GNOME Power Manager, GNOME Color Manager, colord, and UPower and also contributes to many other projects and opensource standards. Richard has three main areas of interest on the free desktop, color management, package management, and power management. Richard graduated a few years ago from the University of Surrey with a Masters in Electronics Engineering. He now works for Red Hat in the desktop group, and also manages a company selling open source calibration equipment. Richard's outside interests include taking photos and eating good food.

One thought on “Brightness on lenovo hardware”

  1. do you have *any* contact with lenovo engineers? I fixed a trivial bug in the 3000 V100 DSDT and I'd like to let them know about it but I can't find any kind of technical contact point for lenovo.

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