https://bugzilla.novell.com/show_bug.cgi?id=578578 https://bugzilla.novell.com/show_bug.cgi?id=578578#c10 Joey Lee <jlee@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |mjh@kabelmail.de --- Comment #10 from Joey Lee <jlee@suse.com> 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? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.