SLOW USB SPEEDS

Finding the same issue. I have 2 drives attached, one firewire which is fine and the USB Western Digital Hard drive which has slowed to a crawl. Was never an issue before installing Leopard. Tried remounting, restarting, no luck so far

I now have the same issues. Any ideas?

Just to add another report, I have the same issue on my Mac Pro running Leopard.

It appears to have broken the USB 2.0 driver, so I only get USB 1.1 speeds now.

If this is a general "issue" that might explain why some installs that have a USB external drive connected take so long initializing, especially with Spotlight.
If anyone finds their computer running very slow under Leopard, I would first suggest checking your USB speed. That might explain a lot of the sluggishness that some report.

I thought it was just me, but I am having the same ******** issue with my USB speed.

(and why is re2arded being taken out)

Message was edited by: Dan Desimoni

Using the System Profiler, click on USB and then USB High-Speed Bus.

This is what I get on my MBP running Tiger

Host Controller Location: Built In USB
Host Controller Driver: AppleUSBEHCI
PCI Device ID: 0x2836
PCI Revision ID: 0x0003
PCI Vendor ID: 0x8086
Bus Number: 0xfd

Built-in iSight:

Version: 1.45
Bus Power (mA): 500
Speed: Up to 480 Mb/sec
Manufacturer: Apple Inc.
Product ID: 0x8502
Serial Number: 406A4186590E2C28 (03.01)
Vendor ID: 0x05ac (Apple Computer, Inc.)

don't know if this will help anyone.


The BlueTooth USB bus reads as follows:

USB Bus:

Host Controller Location: Built In USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x2834
PCI Revision ID: 0x0003
PCI Vendor ID: 0x8086
Bus Number: 0x1a

Bluetooth USB Host Controller:

Version: 19.65
Bus Power (mA): 500
Speed: Up to 12 Mb/sec
Manufacturer: Apple, Inc.
Product ID: 0x8205
Vendor ID: 0x05ac (Apple Computer, Inc.)

I wonder if somehow they got shifted around or something? Like a driver installed itself in the wrong place?

(and why is re2arded being taken out)

Because it is offensive and pejorative maybe?

Note the alleged USB 2.0 speed of 480 mb/sec is equivalent to 60 MB/sec and there are no drives capable of data transfer at that speed in these cases so nobody was actually getting 400 mb/sec anyway.

For consistent external HDD throughput get firewire.

In my case, unplugging it and putting it back gave me USB 2.0. For some reason, Leopard has trouble with USB devices at times.

I rarely reboot my machine so it isn't likely to bother me much, but I do hope this gets fixed.

Video devices like "TV For Mac" crashed Tiger all the time, and I've not yet tried that with Leopard. My Mac hasn't crashed since I stopped using USB video devices, and I'm just not ready to go there again.

<edited by host>

The sad thing is that they remove words that cause the meaning of the posting to change.

I mean, what if you wanted to ask: "Hello, I have a ******** child and I would like to find some software for him."

People will think you said you had a <cussword> child and have no idea what to tell you... 🙂

I am having this problem also, and it is soul crushing

Un-mounting the drives, then unplugging the drives fixes this problem. I'm not sure what exactly causes the slow down. But I think it might have something to do with syncing my iPhone.

unplugging and plugging back in does not solve the problem!

I hate to ask the obvious, but... is the disk connected to a USB2 port?

Anyway, why did you buy a ** USB2 drive? Everyone knows Firewire (in any incarnation) is best! 😉

this is not a thread issue of a new drive with slow usb speeds...

this is about previous working drive's and flash drive's that had no problem under 10.4 and when upgraded to leopard are now showing slow transfer speeds.

Yes, both are USB2.

Apple's iPod and iPhone are both USB2. There are 3 USB2 connections on my MBP. And 1 Firewire 800. Course I'm gonna use USB2.
<post edited by host>

A simple search on these forums and / or Google will reveal that Firewire connections perform better than USB2 (at least with the mac), so in fact, USB2 is NOT the obvious choice.

I understand that iPod and iPhone use USB2 and not Firewire, but I was not talking about them.
<post edited by host>.