Is there a DPMS option to turn one monitor off in a dual-head setup? I know the following can turn both off:
xset dpms force off
migrated from serverfault.com May 11 '10 at 19:00
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If you are using the nvidia driver, you can use twinview metamodes. You can find everything in the driver manual. After configuring, you can switch by using
or use a 0 if you want to switch back.