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Sleep disconnects USB drive


djpumpkin

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I am wondering if there is a way to prevent usb drives from being disconnected when my D630 sleeps? At the moment when the machine wakes the drive is unmounted and I get a warning message telling me the drive was not put away properly.

 

This happens on battery and mains power.

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Yes, the USB ports are not electrically fed when the computer goes to sleep and, consequently, cannot supply 5V to connected devices. Not really a surprise, it is an expected behaviour during an energy-saving mode after all.

 

This can be somehow/partially controlled in the BIOS. If you enable the USB wake feature, the USB ports will remain electrically fed when the computer is connected to the mains but not when operating on the battery.

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Thanks Hervé

 

I did find that setting in the bios but it seemed to have no effect - I've since found that the USB key I was using to test it with was defective. Now - when on power supply - USB ports are kept alive when sleeping / waking.

 

Great!

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