On Thursday, September 26, 2013 09:49:03 AM Jörg Otte wrote:
2013/9/25 Jani Nikula jani.nikula@linux.intel.com:
On Wed, 25 Sep 2013, Jörg Otte jrg.otte@gmail.com wrote:
2013/9/25 Jani Nikula jani.nikula@linux.intel.com:
On Wed, 25 Sep 2013, Aaron Lu aaron.lu@intel.com 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
2013/9/27 Rafael J. Wysocki rjw@sisk.pl:
On Thursday, September 26, 2013 09:49:03 AM Jörg Otte wrote:
2013/9/25 Jani Nikula jani.nikula@linux.intel.com:
On Wed, 25 Sep 2013, Jörg Otte jrg.otte@gmail.com wrote:
2013/9/25 Jani Nikula jani.nikula@linux.intel.com:
On Wed, 25 Sep 2013, Aaron Lu aaron.lu@intel.com 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
dri-devel@lists.freedesktop.org
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Jörg Otte -
Rafael J. Wysocki