Re: [Line6linux-user] HD300 on Mint, need help

[Greg S. <sc...@bi...>]

----- Original Message -----
> From: "Markus Grabner" <gr...@ic...>
> To: lin...@li...
> Sent: Tuesday, December 18, 2012 11:00:56 AM
> Subject: Re: [Line6linux-user] HD300 on Mint, need help
> 
> On Sunday 16 December 2012 21:20:57 Greg Schwimer wrote:
> > I see the following in /var/log/syslog when I plug the HD300 in:
> > 
> > Dec 16 21:10:08 minion kernel: [98107.288113] usb 5-1: new
> > full-speed USB
> > device number 8 using uhci_hcd
> > 
> > Dec 16 21:10:08 minion mtp-probe: checking bus 5, device 8:
> > "/sys/devices/pci0000:00/0000:00:1d.3/usb5/5-1"
> > 
> > Dec 16 21:10:08 minion mtp-probe: bus: 5, device: 8 was not an MTP
> > device
> 
> Here is what I get when I plug in my PODxt Pro:
> 
> 18.12.2012 18:45:45	mark	kernel	[ 2174.648034] usb 2-2: new
> full-speed USB
> device number 3 using ohci_hcd
> 18.12.2012 18:45:45	mark	kernel	[ 2174.868544] usb 2-2: New USB
> device
> found, idVendor=0e41, idProduct=5050
> 18.12.2012 18:45:45	mark	kernel	[ 2174.868551] usb 2-2: New USB
> device
> strings: Mfr=1, Product=2, SerialNumber=0
> 18.12.2012 18:45:45	mark	kernel	[ 2174.868556] usb 2-2: Product:
> PODxt Pro
> 18.12.2012 18:45:45	mark	kernel	[ 2174.868559] usb 2-2: Manufacturer:
> Line
> 6
> 18.12.2012 18:45:45	mark	kernel	[ 2174.871624] line6usb 2-2:1.0:
> Line6
> PODxt Pro found
> 18.12.2012 18:45:45	mark	kernel	[ 2174.874705] line6usb 2-2:1.0:
> Line6
> PODxt Pro now attached
> 
> On my system, the ohci_hcd driver is used instead of uhci_hcd on
> yours, but
> that shouldn't make any difference. Interestingly, even before
> entering the
> line6usb module, the kernel reports some details about the device
> (lines
> containing "usb 2-2:"), which is not the case in your log file. Do
> you get
> similar messages ("New USB device found" etc.) when you plug in other
> USB
> devices?
> 


I admit I'm not well endowed as far as USB devices go. I did find this, which explains the difference beteween UHCI, OHCI, and EHCI:

http://www.linux-usb.org/FAQ.html

Excerpt:

--snip--snip--

First, you need to know what kind of USB "Host Controller" hardware you have. Mainstream hardware has one of three kinds, named after the hardware register-level "Host Controller Interface" (HCI) they implement. The first one was Intel's "Universal" HCI (UHCI). That type of controller doesn't do very much in hardware, which makes the software do more work (and need more memory). Most controllers on Intel or Via chipsets use UHCI. The second kind of USB 1.1 host controller was organized by Compaq and several other companies, and had fewer "Intellectual Property" restrictions. That was called the "Open" HCI (OHCI), and does quite a bit more of USB in hardware. Learning that two kinds of register interface was one too many, USB 2.0 defined just one, with much less legal encumbrance. The third, and newest, kind is the "Enhanced" HCI (EHCI), and is the only kind used to talk to high speed devices. You can tell which kind you have by output of lspci -v|grep HCI:

--snip--snip--

lspci shows that I have 4 UHCI controllers, and 1 EHCI controller, although I can't find the EHCI controller. I've plugged into every port on the PC and get the same uhci_hcd message each time.

I'm thinking about trying the latest ubuntu on a memory stick to see if I get anywhere. I *think* Mint and Ubuntu are using the same kernel, but I can't be sure.

Thanks for all the help!

- Greg