In <200908211043.44820.tchate...@free.fr>, Thierry Chatelet wrote: >On Friday 21 August 2009 10:28:20 Thierry Chatelet wrote: >> Next problem (and last) I have is that I cannot set the brightness on my >> laptop. Kpowersave setting indicate: Your Hardware currently not support >> changing the brightness o your display. >> What is missing, as it works with kernel 2.6.28? > >I found that: >~$ dmesg |grep brightness >[ 26.758710] ACPI Error (video-0537): Current brightness invalid > [20090320]
That looks like either the kernel is reading from the wrong place or the hardware is providing the wrong value. You might want to follow up with some kernel hackers. >What to do now? You might try reading/setting some of these values: /sys/devices/virtual/backlight/acpi_video0/brightness /sys/devices/virtual/backlight/acpi_video0/actual_brightness /sys/devices/virtual/backlight/acpi_video0/max_brightness /sys/module/video/parameters/brightness_switch_enabled Perhaps it will work if your brightness is less than the max_brightness. -- Boyd Stephen Smith Jr. ,= ,-_-. =. b...@iguanasuicide.net ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.net/ \_/
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