adding "acpi_backlight=vendor" as kernel option fixed it. This can be closed.
-- [karmic on Vaio VGN Z21MN] Cannot get laptop panel brightness https://bugs.launchpad.net/bugs/392055 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
