On Thu, May 17, 2007 at 03:25:13PM +0200, Beat Zahnd wrote: > Source: linux > Version: 2.6 > > After Updating to etch and kernel 2.6.18 a whining very high frequency > noise is hearable. The same noise was also hearable with kernel-2.6.8 > but only if backlight intensity was not at maximum level > > As with the old kernel the noise frequency changes with backlight > intensity change, but is not disapearing with maximum intensity with > the new kernel. Upon boot the noise is not present until the line: > > pmubl: Backlight initialized (pmubl) > > appears. Therefore I think that the new kernel has limited the > backlight level to value slighly bellow the hardware limit. > > The above stated console log line is issued by code in > > drivers/macintosh/via-pmu-backlight.c
Does this error still occur with more recent kernel versions? If you're running Etch, could you try to reproduce this bug with the 2.6.24 based kernel added in 4.0r4? http://packages.qa.debian.org/l/linux-2.6.24.html Cheers, Moritz -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org