How to adjust the brightness of Lenovo U150 under Linux

How to adjust the brightness of Lenovo U150 under Linux. In view of this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Since I bought the U150, the brightness of the integrated GMA X4500MHD has never been adjusted. At most, it can only be adjusted during the grub menu, which is a headache. After a hard search on the Internet, I found the same problems encountered by Y450 children's shoes. In this post, there is a summary and a script is written to relate the relationship between keyboard-adjusted brightness and actual brightness. The core thing is:

Sudo setpci-s 00displacement 02.0 F4.B = "20"

The next 20 is luminance, with values from 00 to FF, hexadecimal. Can achieve 255 levels of brightness adjustment, or very ideal. It is a little more than the level in Windows.

Setpci adjusts by setting the value of the pci interface register, and it is possible to force the value of the pci register in Windows to achieve the same effect.

After running the provided script, it can be adjusted in linux anyway. Although it's a little awkward to do so.

In the end, the microphone and camera still don't seem to drive. The latest Ubuntu 10.04 has not been solved, and it seems that the road to Linux, driver and compatibility, has become the biggest problem.

This is the answer to the question about how to adjust the brightness of Lenovo U150 under Linux. I hope the above content can be of some help to everyone. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.