I fixed the problem modifying /etc/initramfs-tools/modules and adding two lines:
/etc/initramfs-tools/modules: ... ohci_hcd ehci_hcd ... In my Compaq Presario V2615LA laptop, the order at which the USB host modules get loaded matter at the very early stage of the boot process. I haven't tried changing this in /etc/modules because I assume that by then the USB host modules have already been loaded during the initrd phase, even when I don't do the previous modification of the initramfs modules file. When I plug in the external HDD: ... [17179781.040000] usb 3-2: new high speed USB device using ehci_hcd and address 2 [17179781.172000] usb 3-2: configuration #1 chosen from 1 choice [17179781.592000] usbcore: registered new driver libusual [17179781.700000] SCSI subsystem initialized [17179781.716000] Initializing USB Mass Storage driver... ... I am using the same USB port I was using in my previous post. I never hooked up the hard disk drive to another USB port. If it's worth anything, my computer has only two USB ports, one at each side. I find that when the problem appears, device is detected as usb 3-1 (full speed), after I manually unloaded and reinserted ehci_hcd, it became usb 1-2 (high speed), and after I did the initramfs modules file modifications, it is detected by ehci_hcd as usb 3-2 (high speed). I hope this bits help the devs. -- USB storage not running at top speed since Edgy beta https://launchpad.net/bugs/66115 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
