Has anyone else had problems with DPMS in slackware 10.0? I can't seem to get my monitor to turn off from within X. If I run xset dpms force off, it will make the screen black, but not turn off the monitor. On the same computer, I can run knoppix and the same command will turn off the monitor. Does anyone have any ideas what would cause this? It happens with both the nv and nvidia drivers. Could it be anything with x.org rather than xfree86? Something in the 2.4.26 kernel? This is a GeForce3 Ti200.

Thanks,
Joel

Check if your kernel has ACPI or APM support.

I posted about the same problem a week ago. I have the same graphic card and using 2.6.7 kernel with ACPI compiled in. I solved the problem by installing new nvidia driver (1.0-6106).
It seems to be Xorg problem (probably older unoptimized nv/nvidia driver).

I do have apm loaded as a module. I'm just using the standard bare.i kernel, 2.4.26. I had tried the NVIDIA drivers before, but I was excited to see a new release hoping it would help. It still doesn't turn off my monitor. Maybe I need the 2.6.7 kernel. Here goes giving it a shot.

Joel

Check your /etc/X11/xorg.conf!
You should have line:
Option "DPMS"
under section "Monitor"

Hmm. That's interesting. I mistakenly believed the xset dpms force off would override the lack of the DPMS option in xorg.conf, because xset q would show DPMS was enabled. Apparently I was wrong. Adding the DPMS option to xorg.conf allowed it to work, regardless of kernel or nvidia driver.

I just tried this:

bash-2.05b# /usr/X11R6/bin/xset dpms force off ; /usr/X11R6/bin/xset q
Keyboard Control:
[snip]
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0 WhitePixel: 16777215
Font Path:
/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/75dpi/:unscaled,/usr/X11R6/lib/X11/fonts/100dpi/:unscaled,/usr/X11R6/lib/X11/fonts/Type1/,/usr/X11R6/lib/X11/fonts/Speedo/,/usr/X11R6/lib/X11/fonts/75dpi/,/usr/X11R6/lib/X11/fonts/100dpi/,/usr/X11R6/lib/X11/fonts/cyrillic/,/opt/kde/share/fonts
Bug Mode: compatibility mode is disabled
DPMS (Energy Star):
Standby: 60 Suspend: 120 Off: 600
DPMS is Enabled
Monitor is Off
[snip]
bash-2.05b#
I am reading this on the monitor that says it is OFF! Of course it isn't and it won't!

Do you have Option "DPMS" in your xorg.conf? That fixed it for me.

yes, it's about the first thing I tried. To no avail. Moreover, as you can see from xset q, DPMS is Enabled.

running xset -q tripped me up. It would say DPM is enabled after I ran xset +dpms, but still xset dpms force off didn't work. I'm not sure how to check, but you should definitely make sure that your xorg.conf is right. xset q obviously isn't a reliable indicator of that.

This is what I currently have:

Section "Screen"
Identifier "Screen 1"
Device "VESA Framebuffer"
Monitor "My Monitor"

# 28viii2004 turn DPMS on
Option "DPMS"
# 12viii2004 try again to get xset working
Option "power_saverrelax"

Try putting the Options "DPMS" line in Section "Monitor" rather than Section "Screen"

Section "Monitor"
Identifier "My Monitor"
[snip]
# 28viii2004 turn DPMS on
Option "DPMS"

And, yes, I did restart the XServer by Control-Alt-Backspace! But, unfortunately... no effect

What is your entire monitor section? I don't know if it'll help, but its worth a shot having me look at it.

here it is, (i did cut out the comment lines, however). The power_saverrelax was another suggestion (didn't work either).

By the way, thanks in advance for your assistance. I may well overlook something, after all...

Section "Monitor"
Identifier "My Monitor"
HorizSync 31.5 - 50.0
VertRefresh 40-90
Option "DPMS"
Option "power_saverrelax"
EndSection