Same problem on Ubuntu 12.04 (3.2.0-26-generic) and Thinkpad T500 echo 0 | sudo tee /sys/module/video/parameters/brightness_switch_enabled
or echo 4 > /proc/acpi/ibm/cmos echo 5 > /proc/acpi/ibm/cmos works -> ~9 brightness steps instead of ~5 steps dmesg: thinkpad_acpi: detected a 8-level brightness capable ThinkPad -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/1000270 Title: Laptop backlight brightness increases/decreases 2 steps each time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/1000270/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
