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. >>> >>> 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
