# Re: \[PATCH\] Added backlight driver for Acer Aspire 4736

- From: Pradeep Subrahmanion \<hidden\>
- Date: 2012-03-23 03:36:31 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2012/03/3840022
- Thread: https://ratatoskr.run/linux-fbdev/2012/03/3835160/t.md

```text
On Wed, 2012-03-21 at 11:00 +0800, joeyli wrote:
> think the hotkey of backlight control only works with acpi_osi=Linux ?

yes , hot key control only works with this option.Any ideas about where
the hot key events gets handled ? I tried logging inside
'acpi_video_device_notify' method in video.c . But the control does not
seem to reach here . 

Thanks, 

Pradeep Subrahmanion

```