SupermanTB
asked on
Dual ATI Radeon HD 4550 cards w/ 3 monitors; 2 secondary monitors disconnect randomly and lose all WIndows settings
Have a Dell OptiPlex 980 with (2) ATI Radeon HD 4550 video cards and 3 monitors connected to it (23" primary and 2 secondary).
At seemingly random times, the 2 secondary monitors just disconnect and shut off (not power, just signal). This seems to happen mostly at idle times, but it just happened again while in use. When it happens, I have to go back into settings and re-extend to them again and configure location, resolution, etc.
I've updated to the latest drivers via Dell's website, which were dated April 2010.
Any ideas?
At seemingly random times, the 2 secondary monitors just disconnect and shut off (not power, just signal). This seems to happen mostly at idle times, but it just happened again while in use. When it happens, I have to go back into settings and re-extend to them again and configure location, resolution, etc.
I've updated to the latest drivers via Dell's website, which were dated April 2010.
Any ideas?
ASKER
I will check on that this afternoon, but wouldn't a power management setting apply to all monitors, and not just the 2 secondary ones? Also, would power management cause Windows to lose all of its settings relating to the monitors (resolution, extended desktop, location, etc)?
Hi,
Could it be the ATI PowerPlay settings in Catalyst Control Manager?
Regards,
RobMobility.
Could it be the ATI PowerPlay settings in Catalyst Control Manager?
Regards,
RobMobility.
Alternatively could it be the PCIe Link State Management setting in Advanced Power Settings? Consider turning this off.
Regards,
RobMobility.
Regards,
RobMobility.
Hi,
The Link State Management could shut down the adapter altogether - when it comes back up, you may need to re-apply your desired settings for expanding desktops etc.
Regards,
RobMobility.
The Link State Management could shut down the adapter altogether - when it comes back up, you may need to re-apply your desired settings for expanding desktops etc.
Regards,
RobMobility.
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ASKER
This is to be continued next week. Dell agreed to replace the motherboard, power supply, and both video cards, but the service tech arrived this morning with a defective MB.
They will try again on Monday, I'll post what happens. Thanks for your help.
They will try again on Monday, I'll post what happens. Thanks for your help.
ASKER
Thanks guys. DELL replaced the motherboard, graphics cards, and power supply, and it resolved this issue.
Could it be a power managment setting?
Regards,
RobMobility.