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Bug#243081: xserver-xfree86: dpms blanking behaves erracticaly

retitle 243081 xserver-xfree86: [ati/atimisc] DPMS power off misbehaves on 3D Rage Pro rev 92
tag 243081 + upstream

On Sat, Apr 10, 2004 at 02:52:11PM -0700, Tyler Riddle wrote:
> Package: xserver-xfree86
> Version: 4.3.0-7
> Severity: normal
> Hello,
> XFree86 DPMS blanking is behaving strangely. When the server moves to
> "power off" mode, my monitor will turn off and then back on about once
> every 2 seconds about 30 times. Then it will finaly settle down into
> its off state. I am using 
> xset dpms 0 0 1200
> in my .Xsession but the same problem exists if I use the options in 
> XF86Config as well. 
> Any help you can provide would be greatly appreciated,

I can't offer *much*, except that DPMS is implemented on a
driver-specific basis, because it involves register-level poking of the
video chipset.

For your chipset, the implementation appears to be in the function
ATIMach64SetDPMSMode() in the file

Can you try reproducing this problem with a different monitor?

G. Branden Robinson                |     If you're handsome, it's flirting.
Debian GNU/Linux                   |     If you're a troll, it's sexual
branden@debian.org                 |     harassment.
http://people.debian.org/~branden/ |     -- George Carlin

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