Comment 114 for bug 12637

Hello, I posted before when Ubuntu switched to 8.04. The brightness was dim on boot/media player start/Game and not as bright. .I then switch to Archlinux but the problem cotinued but was not as bad, i.e. only dim once then not the next time you start vlc or game. Then came Ubuntu 8.10 and the problem became strange. Dim on boot and screen saver Only. And the brightness controls started going bright-> dim-> then bright again instead of dim->bright. I fooled around fixing the errors in the DSDT but could not fix the problem. This do to the lack of documentation on ACPI and AML. Then came chrismulderza on the ubuntuforums.org. He found out that the DSDT in the Lenovo Idea Pad Y510 was not giving the info to the kernel in the order it needed it and spesified in the ACPI standerds. In fact it was just spiting the info about the audio to the kernel and not ordering it at all. So, he fixed it and now the brightness is fixed.

http://ubuntuforums.org/showthread.php?t=870681&page=21

Just to make it clear.

This is all the deliberate act of Microsoft to make all computers only run on windows. They were taken to the supreme court of the United States of America and Found Guilty.

ACPI standers were made by a group of compays. Intel and Microsoft were among them. In the end intel made a compiler and Microsoft made one. Microsoft one is not standers compliant and Microsoft makes windows be able to run on messed up DSDT's and such that come out of there compiler. So, when computer manufacturers are writing the DSDT's and such they use the Micosoft compyler. Why maybe they are installing windows on most of the computers so they don't care. OR they just don't relies that the Microsoft complier sucks. At the end of the day windows only computers are pumped into the market.