Acer 7750G, AMD Radeon HD 6650M with 6 external monitors

[boardshorts]

This setup has worked since January 2012.

External monitors recently started going into sleep mode and not coming back without reboot.

Tried updating AMD drivers and windows does not detect adapters. Updated Display link drivers same.

Reinstall older AMD drivers no change. Uninstall Displaylink drivers and it automatically finds later driver when connected to internet.

Uninstall Displaylink again disconnected from internet. Disable searching Windows Update for device drivers. Install Display link 5.5M2 from CD that came with USB-DVI adapters.

Everything works again but still goes into sleep mode and does not coming back without reboot.

Power setting has USB selective suspend setting disabled and on every USB device that has a power management tab we have unchecked the Allow the computer to turn off this device to save power.

Attached the output from your Displaylink Support Tool. It failed the System Compatibility Check with a message to update the Renesas Electronics USB 3.0 Host Controller driver but the last time we tried this (6 months ago) we needed to roll this back to make the external monitors work again.

Looking for advice on what version of the Displaylink drivers will work with our USB to DVI-17 USB\VID_17E9&PID_0360&REV_0111 and the prerequisites to making this work ie AMD Radeon drivers and Renesas Electronics USB 3.0 Host Controller driver.

Thanks