linux-kernel - Re: [PATCH] console: make blank timeout value a boot option

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Message-Id: <20090604011740.5879732c.akpm@linux-foundation.org>
Date:	Thu, 4 Jun 2009 01:17:40 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Daniel Mack <daniel@...aq.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] console: make blank timeout value a boot option

On Thu, 4 Jun 2009 09:44:09 +0200 Daniel Mack <daniel@...aq.de> wrote:

> On Thu, Jun 04, 2009 at 12:23:25AM -0700, Andrew Morton wrote:
> > > --- a/Documentation/kernel-parameters.txt
> > > +++ b/Documentation/kernel-parameters.txt
> > > @@ -545,6 +545,10 @@ and is between 256 and 4096 characters. It is defined in the file
> > >  			console=brl,ttyS0
> > >  		For now, only VisioBraille is supported.
> > >  
> > > +	consoleblank=	[KNL] The console blank (screen saver) timeout in
> > > +			seconds. Defaults to 10*60 = 10mins. A value of 0
> > > +			disables the blank timer.
> > > +
> > 
> > It would be better to make this alterable at runtime, rather than at
> > boot time.  Perhaps another VT ioctl.
> 
> That's already possible - there is an ioctl for that. It's just not
> configurable at boot time, and that occured to be very annoying when
> developing systems that won't fully boot up for >10mins. You have no way
> to wake up the console then.

Oh.  Your changelog sucked :)

> Is there any concern why that shouldn't be a kernel option?

I suppose it makes sense.  You really have systems which take more than
ten minutes to start running initscripts?  Poor you.

Please resend with a more complete description?
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