Slow transfer rate with USB HDD

[Husse]

Taken from Launcpad

1) plugin in the USB drive
2) mount it if not automounted (sometimes it doesn't)
3) right-click, properties in nautilus, go to drive tab, see speed "12 Mbps"
4) umount it, unplug it
5) sudo rmmod ehci_hcd
6) plugin the USB drive
7) sudo modprobe ehci_hcd
8 ) mount it if not automounted
9) right-click, properties in nautilus, go to drive tab, see speed "480 Mbps"

The rmmod + modprobe forces a new discovery of the unit
It's not fun but this is something you could live with as it seems not to happen every time
I hope this will be solved in updates, either to the kernel or some module ...
If this exists in Hardy and is a more general bug I fear it's inherited by us

[Husse]

What does lsmod give?
the ehci_hcd should be there - I checked my system
The problem may be that it does not get loaded...
The hal upgrades can be bad for wireless and possibly some sound - I have applied them, I apply everything to may main computer to test and I have complete backups so I have no problems going back if things go wrong. It does not have wireless and is nforce4
We don't put updates in category 4 or 5 because they will cause problems (some exceptions) but because they could cause problems
We prioritize stability

[Husse]

I'll mark this as unsolved and look for a solution

[Husse]

This is what I find with

Code: Select all

lsmod | grep -i usb

usbhid 31872 0
hid 38784 1 usbhid
usbcore 146028 6 snd_usb_audio,snd_usb_lib,usbhid,ehci_hcd,ohci_hcd

Before this I find a lot about usb sound but that's not relevant
(The format is name, size, use count, list of referring modules.)

[Husse]

When you answer a lot....
Missed it here but in another question I wrote that it can be because of a sub standard USB cable to the front of your case. I think I experience that in one of my desktops