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lenoso-sl-laptop This is an experimental driver for the Lenovo ThinkPad SL series, since those laptops are currently not supported by the thinkpad_acpi driver. Works: hotkeys, bluetooth, the Lenovo Care LED, the fan Experimental: backlight brightness, WWAN Not tested: UWB Not implemented: hdaps accelerometer NB: to make the Lenovo Care LED blink, make sure the LED timer trigger is enabled (CONFIG_LEDS_TRIGGERS_TIMER) and do echo "timer" > /sys/class/leds/lensl::lenovocare/trigger The backlight brightness control is useful because the SL series use the ACPI brightness API in a non-standard manner, causing buggy behavior with the standard ACPI video module backlight control. To enable the brightness control, load the module with the "control_backlight=1" module parameter (i.e. insmod lenovo-sl-laptop.ko control_backlight=1 ) Note that the brightness control will likely conflict with the ACPI video driver brightness control. So, if you have the ACPI video driver loaded (and you probably do): echo 0 > /sys/module/video/parameters/brightness_switch_enabled insmod lenovo-sl-laptop.ko control_backlight=1 and then restart X. Alternatively, you can try to use the "acpi_backlight=vendor" kernel boot parameter (recognized by kernel versions 2.6.28 and higher). Alternatively alternatively, simply unload the ACPI video driver (rmmod video). To build the module for your current kernel, run make. Note that you will need to have the sources or headers for your kernel in the correct location (depends on the distro).