Re: RFE: console_blank_hook that calls userspace helper

[Pavel Machek <pavel@ucw.cz>]

Hi!

> http://bugzilla.kernel.org/show_bug.cgi?id=4767:
> 
> Bugzilla Bug 4767 	RFE: console_blank_hook that can call userspace
> program
> Submitter:   	heilong@bluebottle.com (Eugene Pavlovsky)
> 
> I think it'd be very good to have a console_blank_hook handler that
> would call a
> userspace program/script/generate hotplug event whatever. Currently,
> the console
> can only be blanked using APM, so no options exist for people using
> ACPI. I've
> got a Radeon graphics chip on my laptop, and the LCD backlight can be
> controlled
> (on/off) using radeontool. If there was a userspace callback
> interface
> to
> console blanking, I would just make a callback script that calls
> "radeontool
> light off" on blank and "radeontool light on" on unblank - really
> easy. I think
> this userspace console_blank_hook handler is very simple to put into
> kernel, but
> I'm not a kernel developer myself, so wouldn't risk sending any
> patches (that
> call system("some_script")), because I probably won't make things as
> they should
> be in the kernel.

Radeonfb should blank console automatically, without userspace
helper. Send a patch to do that ;-).

								Pavel

-- 
teflon -- maybe it is a trademark, but it should not be.