On Tue, Jul 31, 2012 at 12:03 PM, Pali Rohár <pali.rohar@xxxxxxxxx> wrote: > On Tuesday 31 July 2012 17:49:32 Luca Tettamanti wrote: >> I'm putting back the CC and adding Alex. >> >> On Tue, Jul 31, 2012 at 5:07 PM, Pali Rohár > <pali.rohar@xxxxxxxxx> wrote: >> > Thanks, now working. When I write to acpi video brightness >> > file it change brightness and in dmesg is: >> > >> > [ 47.200998] [drm:radeon_atif_handler], event, device_class >> > = video, type = 0xd0 >> > [ 47.201102] [drm:radeon_atif_get_sbios_requests], SBIOS >> > pending requests: 0x80 >> > [ 47.201104] [drm:radeon_atif_handler], ATIF: 1 pending >> > SBIOS requests >> > [ 47.201105] [drm:radeon_atif_handler], Changing brightness >> > to 11 >> >> Great! I'll send an updated patch to Alex soon. >> >> > I think that acpi only sent event about brightness key >> > pressed, because nothing happened when I pressed it. >> > >> > Also for windows is needed special HP application (hp hotkey) >> > for brightness keys. Without it brightness keys not working >> > too... >> I've looked at hp-wmi: the hotkey is indeed dispatched via WMI >> (hp-wmi) so you need something in userspace (KDE, Gnome, etc) >> to respond to that key press. >> > > No, when I rmmod hp-wmi brightness keys still generate events. > And when I disable acpi then brightness keys do not generate > events but adjust brightness automatically (by BIOS). > > I think that hp-wmi on my notebook only handle bluetooth & wifi > rfkills and ALS switch. All button working without hp-wmi too. > >> > And there is one problem with /sys/class/backlight/radeon_bl. >> > When I enable Ambient Light Sensor which auto adjust >> > brightness based on sensor data, writing value 0 (min) or >> > 255 (max) to /sys/class/backlight/radeon_bl/brightness turn >> > off display. >> Ok, that's weird. 0 turns off the panel by design, 255 should >> not... > > But when ALS is disabled 0 did not turn display off. 0 only turns off the backlight, not the panel itself. Is the backlight still partially on or is it just the actual panel (timing and image)? Alex -- 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
