Amazon Kindle not charging in Ubuntu

I have a dual boot with Windows XP and Ubuntu 10.10. I connected my Amazon Kindle to an USB interface in XP and in Ubuntu. From XP everything works with no flaw. In Ubuntu the data exchange is perfect, but the device does not charge.

I am pretty sure that there is a trivial Linux configuration of USB power management, and probably this is a newbie question. Any suggestion? Thank you.

Solution 1:

Try ejecting Kindle drive in Nautilus or in terminal sudo eject /dev/disk/by-label/Kindle

Solution 2:

Check your dmesg or kernel logs - sometimes you see something about how the device has requested more power than the system is able/willing to supply. It's rare, especially because XP will charge it, but possible.