On my new Ratel Performance, I have 2 USB issues:
- My USB keyboard is recognized by the BIOS and by Grub, but immediately after Grub loads the default menu option, the USB keyboard stops being recognized. When the LightDM menu appears, I must wait about 10 or 20 seconds for the keyboard to be usable again.
- My external USB-powered drive (Western Digital) is not mountable (it's just a ext4 partition). dmesg sees the drive when I connect it, but that's all. lsusb, fdisk, GParted, SpaceFM, Thunar, Nautilus, etc. don't see it, so I can't mount it.
I can use this drive with my netbook, so I don't think the problem is with the drive itself.
I tested several USB ports, USB 2, USB 3, but the problem remains.
My kernel: Linux ordi 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Thanks a lot.