Becoming a bit annoyed here. Using the graphical configuration tool for KDE, I have disabled power management stuff. This is a desktop for my personal use, and I am not interested in monitor blanking. The screen, however, continues to blank.
I have determined that the culprit is DPMS. xset q output shows that DPMS is enabled.
Ubuntu 12.10 quantal: On login, I run "xset -dpms s 0 0 s off". This works great until I suspend and resume. For some reason, dpms is re-enabled after resume. Is there an easy way to completely disable DPMS without recompiling X?
I installed Kubuntu 10.04 on my PC to try it out. I noticed the monitor shuts off (sleep?)after 10 minutes of inactivity. I have tried changing the gui setting for the monitor but no matter what I set them to it still goes to sleep after 10 minutes. I did find that xset -dpms will keep the monitor active throught the entire session.
I upgraded to Kubuntu 13.10 from 13.04 yesterday. Kubuntu now thinks have three monitors -- LVDS1 (my laptop screen), HDMI1 (my secondary monitor) and VGA-2 (the phantom monitor) . The "Display Configuration" program is adamant that this monitor is connected, it won't stay disabled on restart.
Is there a way to remove this monitor, that doesn't involve reinstalling Kubuntu?
I have a retina MBP (running 10.8.4) and a Dell ST2210b monitor. The two are connected via HDMI (high speed and I think version 1.4 w/ Ethernet). The problem I'm having is that when putting my Mac to sleep the monitor does not enter power save mode, it instead complains about there being no HDMI cable connected.