Re: screensaver

[Richard B. Johnson]

On Thu, 14 Apr 2005, sauro wrote:

> Greetings.
>
> I am using a 2.4 Linux workstation in text mode (no graphic interface).
> After some time, Linux activates the "screensaver" and the monitor goes blank 
> on "stand by" mode until activity is detected from the mouse or keyboard.
>
> Is it possible to disable this screensaver, so that the monitor keeps on all 
> the time?
>
> Thanks in advance.

Yes, but you need to send the screen some escape sequences, the
last time I checked. Subroutines included do the following:

noblank() Stops screen blanker (what you want).
scr()     Resets ANSI mode to return from shifted to normal.
          Sometimes the screen gets shifted after accidentally
          reading binary files.
cls()     Clear the screen.


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//
//  This program may be distributed under the GNU Public License
//  version 2, as published by the Free Software Foundation, Inc.,
//  59 Temple Place, Suite 330 Boston, MA, 02111.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
static const char fix[]={27, '[', '3', 'g',
                         27, '[', 'H', 27, '[', 'H', 27, '[', 'H',
                         27, '[', 'H', 27, '[', 'H', 27, '[', 'H',
                         27, '[', 'H', 27, '[', 'H', 27, '[', 'H',
                         27, 'c', 27, ']', 'R' };
static const char blk[]={27, '[', '9', ';', '0', ']'};
static const char clr[]={27, '[', 'H', 27, '[', 'J' };
void noblank(int fd){ write(fd, blk, sizeof(blk)); }
void cls(int fd)    { write(fd, clr, sizeof(clr)); }
void scr(int fd)    { write(fd, fix, sizeof(fix)); }

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Cheers,
Dick Johnson
Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
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