![](https://seccdn.libravatar.org/avatar/3035b38ff33cf86f480bb169b8500b80.jpg?s=120&d=mm&r=g)
https://bugzilla.novell.com/show_bug.cgi?id=445428
User dkukawka@novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=445428#c12
--- Comment #12 from Danny Kukawka
Danny: Seife has partly explained to me that there are
* machines that have a purely hardware implementation of brightness control, * machines that have a pure software implementation of brightness control * machines that have a hardware implementation and can be controlled in software, and that performing the software calls to change brightness on keypress may conflict with the hardwired brightness control.
All true.
He recommends that I check with you that this is correct, and, how do I establish which kind of hardware Xavier has, to confirm that it is a "KDE issue"?
If the machine handle key events in hardware: stop HAL use the keys. -> if the brightness change, you have a machine from (1) or (3) -> check if you can change the brightness via the sysfs brightness interface -> if not: no problem for KDE -> if it's possible: check if HAL hal has set: laptop_panel.brightness_in_hardware=true -> if not: it's a HAL problem -> if yes (and you have trouble with brightness): it's a KDE bug -> if the brightness don't change you, you have machine from (2) -> check if hal has laptop_panel.brightness_in_hardware=true -> if so: HAL bug -> if not: KDE bug -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.