Comment 46 for bug 311716

No, I have not tried the "options video acpi_backlight=vendor" with the 2.6.27-11.23smb2 kernel.

@Stefan, regarding your comment 30 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/311716/comments/30) I just tried setting "options video acpi_backlight=vendor" in /etc/modules.d/options for kernel 2.6.27-11.22 and it did work. However, the brightest I can go feels like the lowest setting in 2.6.27-11.23 or 2.6.27-10. In a bright room the highest setting is barely readable. Also, there is no /proc/acpi/video/ directory so I can't really check the value am I at.