Comment 11 for bug 489041

Hello, I have the same notebook model, and this is a problem. Ubuntu idenfies the commands in keyboard to change brightness and it try to change it.. The brightness "tooltip" comes in the right top corner, but it have just a few steps (6 steps), and it does not change a thing. Is intersting that the fadeout that heppens when its going to screensaver happens, and it automatically turn off the monitor too.

Adding the parameter acpi_backlight=vendor to the kernel in grub makes the brightness change, but it have too much steps, and it works very buggy (changes automatticaly very crazy, when lighting up it goes all dark, and comes back to where you was... very annoying), so I prefer not using this workaround, since its worst then not having the adjust brightness option.

In Fedora 11 the brightness works perfectly in Acer 5738. I didnt tested the Fedora 12 yet.

Thank you.