On Wed, 25 Sep 2013, Jörg Otte <jrg.otte@xxxxxxxxx> wrote: > 2013/9/25 Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>: >> On Wed, 25 Sep 2013, Aaron Lu <aaron.lu@xxxxxxxxx> wrote: >>> On Wed, Sep 25, 2013 at 10:29:37AM +0200, Jörg Otte wrote: >>>> Backlight can't be modified with this patch set - neither with >>>> function keys nor with the gui. It is a step backward to v3.11-rc1 >> >> So both hotkeys and GUI work in v3.11-rc1? And v3.12-rc2? > > In v3.11-rc1 it didn't work. > Since a later rc (I don't remember exactly which) it did work. > In v3.12-rc1/2 it does work. > In v3.12-rc2 + Aaron's patch set it again doesn't work. > >> >>> Thanks for the test. >>> >>> Please check /sys/class/backlight, is there only one link file >>> intel_backlight? >> >> Indeed, are there others? fujitsu-laptop perhaps? If yes, try >> CONFIG_FUJITSU_LAPTOP=n or an appropriate module blacklist. >> >> Just checking, you do have CONFIG_BACKLIGHT_CLASS_DEVICE=y? > > There is only one intel_backlight link. > Yes, I have CONFIG_BACKLIGHT_CLASS_DEVICE=y > >> Embarrassingly there was a bug in i915 fixed just recently where the >> backlight device wasn't registered for >> CONFIG_BACKLIGHT_CLASS_DEVICE=m... >> >>> If so, please cd inside and try modify the brightness file using echo >>> with some values in the range of 0 - max_brightness, does the >>> backlight level change when you echo a new value? I guess it doesn't, >>> or you wouldn't notice problem. If indeed so, perhaps file a bug at >>> http://bugzilla.kernel.org, Drivers/Video(DRI-Intel)? I suppose Jani >>> and Daniel can help fix your problem. >> >> Yup, please check the above, and report back. > > - echo 0..max_brightness > brightness does not work. Thanks for the info. How about v3.12-rc2 without Aaron's patches? Does intel_backlight also not work there? How about the acpi_video0 (which I presume is present) sysfs interface? BR, Jani. > >>>> >>>> Video driver: i915 >>>> FUJITSU LIFEBOOK AH532/FJNBB1C, BIOS Version 1.09 05/22/2012 >>>> >>>> acpi_backlight=video works. > > Jörg -- 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
