USB devices not present upon awake?

[steffi]

So I have a lot of USB devices plugged into a powered hub and I have a Dell 2408WFP monitor with USB ports.

Often when I awake from sleep the devices plugged into the powered USB hub that's plugged into the 2408WFP which in turn is plugged into my computer are not present until a reboot of the computer.

Does anybody have any idea why this is case?

 

[airplaneman]

To test if it's the problem with your devices or monitor, try plugging them straight into your computer and see what happens. Hope this helps.