On Sat, 2009-04-18 at 19:17 +0800, Andika Triwidada wrote: > On Wed, Apr 15, 2009 at 8:44 AM, Zhang Rui <rui.zhang@xxxxxxxxx> wrote: > > On Wed, 2009-04-15 at 03:52 +0800, Andika Triwidada wrote: > >> On Wed, Apr 15, 2009 at 2:33 AM, Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote: > >> > On Wed, Apr 15, 2009 at 02:31:35AM +0700, Andika Triwidada wrote: > >> > > >> >> /sys/class/backlight/acpi_video0/brightness exist, I can write and > >> >> the value kept, > >> >> but no effect on display brightness. > >> > > >> > Is this an Intel graphics machine? Is the i915 driver loaded? > >> > >> yes and yes > >> > >> $ lspci -nn|egrep '(VGA|Disp)' > >> 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 > >> Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) > >> 00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series > >> Chipset Integrated Graphics Controller [8086:2a43] (rev 07) > >> > >> $ lsmod|grep 915 > >> i915 44928 2 > >> drm 110304 3 i915 > >> intel_agp 39152 1 > >> > > please attach the acpidump output. > > please try the latest git tree. > > > > thanks, > > rui > > using latest (?) git tree (my network link is quite slow, latest I > have is v2.6.30-rc1) > is worst, no /sys/class/backlight > > furthermore, please apply this patch http://marc.info/?l=linux-kernel&m=123982845406021&w=2 on top of 2.6.30-rc1 and see if /sys/class/backlight/acpi_video0/ comes back again. If it doesn't help, please file a new bug report at http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI so that we can track this bug better. thanks, rui > running acpi_listen while running kernel Ubuntu > 2.6.27-11-generic (amd64) > I got some messages (comments are mine): > video DD02 00000086 00000000; brightness up key pressed > video DD02 00000087 00000000; brightness down key pressed > > attached some files which might help, > please let me know if you need more data/test > > Regards, > Andika -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
