https://bugzilla.novell.com/show_bug.cgi?id=578578
https://bugzilla.novell.com/show_bug.cgi?id=578578#c10
Joey Lee changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEEDINFO
InfoProvider| |mjh@kabelmail.de
--- Comment #10 from Joey Lee 2011-08-31 04:16:17 UTC ---
Could you please try to add acpi_osi="Linux" kernel parameter to
/boot/grub/menu.lst? like the following:
kernel /boot/vmlinuz-2.6.32.29-0.3-pae
root=/dev/disk/by-id/ata-WDC_WD1200BEVS-08UST0_WD-WXC608060890-part2
resume=/dev/disk/by-id/ata-WDC_WD1200BEVS-08UST0_WD-WXC608060890-part1
splash=silent showopts vga=0x317 acpi_osi="Linux" <==== add here
Then, reboot your machine try to echo a number to acpi video brightness node:
echo 4 > /sys/class/backlight/acpi_video0/brightness
Looks it works or not.
If yes, that means your machine have incomplete _BCM function support by EC
firmware.
Does your machine's brightness control works fine before ? or ALWAYS fail ?
What is your original OS when you bought in this machine?
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