Vista - Monitor doesn't power off

Hi everyone,


as the subject says, I have a problem with my computer: the display doesn't turn off after the configured time set in the active power plan. The screensaver works fine, so it's not that (for example) a mouse is giving random input. Also, when I shut down the computer, the display jumps to powersaving, so the display works fine.

I've already tried a lot of things to solve it and I hope that someone can help because I don't know what to do know....

Things I've tried:

- Set a different time in the power plan, set time time to disabled and enabled again.
- Disable all wakeon devices by using powercfg
- Install a generic monitor driver instead of the Samsun 204B one.
- Use the secondary DVI port
- Update to the latest Nvidia drivers for my 7600GT
- Run Vista with all programs disabled (both tried msconfig and safemode)
- Use the latest BIOS for my motherboard (S3 mode is set to enabled according to powercfg).
- Installed the latest Intel INF files
- Create a new power plan
- Tried a different screensaver


So what can I try now?


thanks!

Hi Peekstra,

Welcome to Vista Forums.

Double check to make sure that the monitor is set to shutdown at least 1 minute before the computer is set to sleep in Power Options.

Hope this helps,
Shawn

Hi Shawn,


I've disabled the sleep option because I want the system to remain on (it's serving as a UPNP server). Of course, monitor poweroff should still work without sleepmode being enabled...?!?


thanks,


Peekstra.

Peekstra,

Yes, it should. I just tested it on my system with "Computer sleep" set to Never and "Turn off display" to 1 minute. The monitor turned off as is should without the computer. Just as a test, turn off the screensaver to see if it the display will shutdown for you after the time you specified in Power Options.

Shawn

Shawn,


I can confirm that the display doesn't turn off with the screensaver set to disabled (none).


thanks,


Peekstra.

Peekstra,

I must admit that I'm stumped. I hope someone else will come by with a solution for you soon.

Sorry,
Shawn

Shawn,


I finally found the solution!


It was my Guitar Hero controller which was causing the problem! No matter to which USB port I connect it... no more monitor poweroff while this device is connected. I guess that this is a bug in the Microsoft XBOX 360 driver which is required to use this device. I'm already running the latest 1.1 version so I'll just have to wait for a new version to come out.

So to troubleshoot monitor (and probably other ACPI related) issues it helps to disconnect your USB devices. Running in safe mode doesn't help, some drivers are still being loaded. This isn't illogical as you still want to use your keyboard and mouse.


regards,


Peekstra.

Peekstra,

I'm glad to hear that you found the cause of your problem. You might send a bug report to notify them of this, and to see if they may contact you back with a solution.

Thank you for the feedback,
Shawn