Re: [Linux-fbdev-devel] Fw: [Bugme-new] [Bug 4468] New: Upgrade to 2.6.11.6 results in no longer being able to turn the lcd backlight off.

[Antonino A. D. <ad...@ho...>]

On Monday 11 April 2005 08:28, Andrew Morton wrote:

> Previous to my 2.6.11.6 upgrade I was running 2.6.9. With all unpatched 2.6
> kernel versions up to and including 2.6.9, I could turn the lcd backlight
> off by running "echo lcd_out:0 > /proc/acpi/toshiba/video" as root. I
> upgraded directly from 2.6.9 to 2.6.11.6. With the upgrade I am no longer
> able to turn the lcd backlight off. There is no effect after running "echo
> lcd_out:0 >
> /proc/acpi/toshiba/video" and the /proc/acpi/toshiba/video lcd_out option

Looks more like an acpi problem than fbdev/backlight.

> remains unchanged as 1. I recompiled the 2.6.11.6 kernel with the new
> option CONFIG_BACKLIGHT_LCD_SUPPORT=y. Enabling this option did not allow

Does not matter as intelfb does not use the backlight/lcd architecture yet.

Tony