[ltp] USB mouse; XFree86; Screen blanking

[Charlie Hedlin]

Are you using bios power management or do you relegate things like the 
screen control to the OS?

I personally turn off all the timers in the bios so that I can easily 
adjust them when I want.  The list of packages that can replace this 
functionality is fairly long.

If you are using applications to control this, most will look at 
interupt usage.  This can be awkward, because while the PS2 keybaord and 
mouse have dedicated interupts, the USB is all on one.  If you have 
other USB components you could keep your machine awake unintentionally. 
   Refer to whichever application is controlling the screen (usually X 
itself, which doesn't suffer the problem I just described, the Vesa 
power management stuff can be used to turn the screen on and off, and it 
doesn't have to use interupts).  In my case, I use sleepd to put my 
machine into suspend if I leave it idle, and it can be passed interupts 
to watch on the command line.  The display is managed through X, and 
doesn't need that.  The only bios timer I have is to hibernate 30 
minutes after suspend.

Charlie

Tom Rockwell wrote:
> Hi,
> 
> I have a USB mouse that I'm using on my X21 with Xfree86 4.1.0-3.
> 
> This works great, and the mouse can even be hot plugged.
> 
> The ony issue is that using the mouse does prompt the computer to keep 
> the screen at full brightness or on.  The power management ignores the 
> mouse.  This isn't a huge problem - changing turning off the screen 
> dimming and blanking in the BIOS is a reasonable workaround.
> 
> However, I thought I'd ask if anybody knows of an actual fix?
> 
> Thanks,
> Tom
> 
> 
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