http://bugzilla.kernel.org/show_bug.cgi?id=11457
------- Comment #22 from [EMAIL PROTECTED] 2008-09-09 18:46 ------- (In reply to comment #21) > (In reply to comment #20) > > Okay, in order to see if ACPI can control the brightness, > > please stop using xbacklight. :) > > Can "echo 0 > /sys/class/backlight/acpi_video0/brightness" and "echo 10 > > > /sys/class/backlight/acpi_video0/brightness" change the brightness level > > after > > a fresh boot? > > Yes, it's work. > this means that the brightness can be controlled via ACPI methods. > > If yes, please kill acpid and run "cat /proc/acpi/event", check if there is > > something pop up when pressing the hotkey. > > Yes, it's work too. > > cat /proc/acpi/event > video C1AD 00000087 00000000 > video C1AD 00000086 00000000 > this means that ACPI video driver can receive the event. > > If no, which means that the ACPI video driver can receive the event and then > > tries to change the backlight via ACPI control method, which doesn't work on > > this laptop. > > > And if yes? > If yes, the brightness should be changed successfully when pressing the hotkey, but actually it's not... this could happen only in one case, i.e. video.brightness_switch_enable is cleared. could you please 1. attach the result of "grep . /proc/acpi/video/*/*/brightness" 2. make sure /sys/modules/video/parameters/brightness_switch_enabled is set. 3. do this test: a) grep . /sys/class/backlight/acpi_video0/* b) press the hotkey (make sure there is an event at this time using the method in comment#20) c) grep . /sys/class/backlight/acpi_video0/* 4. attach the test results here. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
