http://bugzilla.kernel.org/show_bug.cgi?id=11769
------- Comment #27 from [EMAIL PROTECTED] 2008-11-12 20:07 ------- (In reply to comment #26) > Hi, Marc, > you don't need to do the test in comment #22. Too late :) > (In reply to comment #21) > > 23:15 - Boot. Brightness goes up to 100% > good I respectfully disagree :) > > 23:17 - echo 62 > /proc/acpi/video/VGA/LCD/brightness. The actual > > brightness > > changes, and that file has the correct value, but both backlight brightness > > files (acpi_video0, acpi_video1) still say level 7 (100%). > good. the ACPI control methods works on this laptop. > and the "brightness" file only returns a cached value, in order to get the > real > brightness level, you need to run "cat actual_brightness" I will use actual_brightness from now on. > > 23:19 - I go to console using Ctrl-Alt-F1. The actual brightness goes to > > 100%. > this is strange, this is not done by ACPI driver. > please do this test, unload the ACPI video driver before you go to console. > does the brightness still goes to 100%? No, it does not. There are absolutely no brightness changes under any circumstance when video.ko is not loaded. > > 23:21 - I press the brightness up/down switches a few times. The values in > > the brightness files never change. > this is weird, the dmesg shows that ACPI video driver does change the > brightness level upon hotkey event, please press the brightness down button > for > 5 times, if the brightness doesn't change, attach the output of "cat > /proc/.../brightness" The hotkeys change the physical brightness, but the files remain unchanged. I have just used the keys to reduce the brightness to a very low level, but /proc.. still says 100%. [EMAIL PROTECTED] cat /proc/acpi/video/VGA/LCD/brightness levels: 100 37 12 25 37 50 62 75 87 100 current: 100 > BTW: please attach the output of "xrandr --verbose". > please run "xrandr --verbose | grep BACKLIGHT", > if the BACKLIGHT_CONTROL is not "kernel" mode, > please run "xrandr --output LVDS --set BACKLIGHT_CONTROL kernel" > and check if this helps. BACKLIGHT_CONTROL is "kernel". I'll attach the output in a moment. -- 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
