2013/9/27 Rafael J. Wysocki <rjw@xxxxxxx>: > On Thursday, September 26, 2013 09:49:03 AM Jörg Otte wrote: >> 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). > > So can you please open a bug entry at bugzilla.kernel.org against i915? > > The fact that ACPI video works for you doesn't mean that intel_backlight > shouldn't, I suppose? > > Rafael > done. Bug-Id:62281 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
