I have the same laptop (toshiba L735) with the same video card (nvidia 315M) and I also experience this bug.
I just tried an ubuntu 10.04 (lucid) live cd which uses this kernel: Linux ubuntu 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 05:14:15 UTC 2010 x86_64 GNU/Linux The brightness does not change. The bug is present. In /sys/class/backlight/, I have: acpi_video0 -> ../../devices/virtual/backlight/acpi_video0 nv_backlight -> ../../devices/pci0000:00/0000:00:01.0/0000:01:00.0/backlight/nv_backlight Each of those directories has a file called actual_brightness that does *not* change when I use the brightness keys. I'll try this again with the kernel parameters mentioned above: acpi_backlight=vendor acpi_osi="Linux" (as soon as I figure out how to do this with the live cd) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/971750 Title: [Toshiba L735-101] screen brightness cannot be set using hotkeys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/971750/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
