http://bugzilla.kernel.org/show_bug.cgi?id=12249
------- Comment #25 from tetrom...@gmail.com 2008-12-22 22:32 ------- (In reply to comment #23) > Created an attachment (id=19443) --> (http://bugzilla.kernel.org/attachment.cgi?id=19443&action=view) [details] > customized DSDT: fix another BIOS bug > > _BQC should return the current backlight levels rather than an index in the > PCTG package. With this DSDT, incrementing brightness above 100% will flip-flop from 25% to 100%: ... -> 80 -> 85 -> 90 -> 100 -> 25 -> 100 -> 25 -> ... And same thing when decrementing below 20%. Start with brightness at 100% # cat /sys/class/backlight/acpi_video0/actual_brightness 0 # dmesg | tail <...> [ 893.870775] Rui: current level is 20, brightness count is 18 # echo 6 > /sys/class/backlight/acpi_video0/brightness /* brightness goes to 50% */ # cat /sys/class/backlight/acpi_video0/actual_brightness 9 # dmesg | tail <...> [ 893.870775] Rui: current level is 20, brightness count is 18 [ 929.443643] Rui: current level is 65, brightness count is 18 /* Note: according to my eyes and /proc/acpi/video/VGA/LCDD/brightness , brightness is now 50%, not 65% */ -- 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. ------------------------------------------------------------------------------ _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
