On Saturday 06 December 2014 13:23:30 Jon Elson did opine
And Gene did reply:
> On 12/05/2014 10:26 PM, Gene Heskett wrote:
> > Silly Q then. The D525MW board probably has only one usb
> > interface, and since my mouse as also plugged into it,
> > limiting it to USB1.1 speeds, would I gain video speed by
> > sticking a ps2 mouse on the machine, thereby removing the
> > speed limitation the USB1.1 mouse usage imposes
>
> Probably not. The USB host port, as far as I know, switches
> to whatever speed the
> device it is talking to at the moment can handle. Maybe
> not, though, especially
> when you are going through a hub of unknown capability. It
> is certainly worth
> trying. You can also get some info on what the host port
> software has configured
> everything as from the lsusb command.
>
> Jon
The lsusb -t (as root) seems to give the needed results:
gene@shop:~/linuxcnc/nc_files$ sudo lsusb -t
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 2: Dev 2, If 0, Class=HID, Driver=usbhid, 1.5M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/8p, 480M
|__ Port 4: Dev 2, If 0, Class='bInterfaceClass 0x0e not yet handled',
Driver=uvcvideo, 480M
|__ Port 4: Dev 2, If 1, Class='bInterfaceClass 0x0e not yet handled',
Driver=uvcvideo, 480M
I'd take a wild guess and say that camera actually needs a USB-3.0 port?
An lsusb -v is very very verbose, many screens full of stuff from the
camera as every register in it report about half a screen full of data, 32
registers for this & that. Confusing and I am glad emc-camview can sort
it.
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Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS
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