Hi; I am using VPCYS1E (Y Series) Sony Vaio notebook, I am using Ubuntu 9.04 with 2.6.31-20-generic kernel. I am also experiencing same issue, i couldn't control screen brightness with any of gnome and linux tools . I have tried disabling Acpi from kernel also tried acpi_backlight=vendor but nothing changed. I have tried 2.6.32 kernel but again no result. Now my boot log shows me the log below.
Thanks Özhan [ 15.538551] sony-laptop: brightness ignored, must be controlled by ACPI video driver -- Screen brightness doesn't work on Vaio Y https://bugs.launchpad.net/bugs/524967 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
