2013/9/25 Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>: > 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? > Without Aaron's patches intel_backlight also does not work. But acpi_video0 does (and takes precedence I think). >>>>> Video driver: i915 >>>>> FUJITSU LIFEBOOK AH532/FJNBB1C, BIOS Version 1.09 05/22/2012 >> >> 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
