On Thu, 2010-04-15 at 10:10 +0800, Chris Bagwell wrote: > On Wed, Apr 14, 2010 at 8:42 PM, Zhang Rui <rui.zhang@xxxxxxxxx> wrote: > > On Thu, 2010-04-15 at 09:30 +0800, Zhang Rui wrote: > >> On Thu, 2010-04-15 at 06:18 +0800, Chris Bagwell wrote: > >> > On Wed, Apr 14, 2010 at 12:26 PM, Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote: > >> > > On Wed, Apr 14, 2010 at 12:14:04PM -0500, Chris Bagwell wrote: > >> > > > >> > >> Does the acpi-video logic not have logic on its own to send key > >> > >> events? So I guess laptops that don't have custom modules to handle > >> > >> this type of stuff don't get visual feedback from gnome-power-manager? > >> > > > >> > > It does, but it's dependent upon the firmware sending them. > >> > > >> > I think the following tells me firmware is sending them. If I leave > >> > acpi_osi="Windows 2009" so that eeepc_laptop doesn't get loaded, I see > >> > events like this on /pro/acpi/event: > >> > > >> > video LCDD 00000087 00000000 > >> > video LCDD 00000087 00000000 > >> > video LCDD 00000086 00000000 > >> > video LCDD 00000086 00000000 > >> > > >> > Thats a couple decreases followed by a couple increases. > >> > > >> I have a EEEpc 1005PE. I'm looking at the backlight problem on this > >> machine, but it seems to be different from this one. > >> > >> The hotkey seems to work perfectly when ACPI video driver is loaded. > >> i.e. I get a single hotkey event when pressing the hotkey and the value > >> of /sys/class/backlight/acpi_video0/brightness changes correctly. > >> > >> The only problem I get is that the actual brightness does not change > >> consistently. > >> say, there are 15 brightness levels in all, > >> level 0, level 5 and level 12 give me a screen with lowest brightness. > >> If I want to get maximum backlight, I need to set it to level 4 or level > >> 11. > > I'm curious, do you still see this issue if you first kill > gnome-power-manager first? > > >> > > Oh, this have already been fixed in the latest BIOS. > > Wasn't fixed in my case. I'd be curious to here if it fixes for you. > no, the problem still exists. I misread your comment at https://bugzilla.kernel.org/show_bug.cgi?id=15182#c33 > > > > Chris, > > do you mean you get duplicate hotkey events after upgrading the BIOS? > > With latest firmware, I get zero hotkey events over /dev/input/event* > unless I add acpi_backlight=vendor to boot options. I just upgrade the BIOS to 1003, and I can still get input event from /dev/input/event4 (which is ACPI video bus). and there is no duplicate input events when pressing hotkey. thanks, rui -- 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
