On 12/07/2014 09:50 AM, Gene Heskett wrote: > > 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? No, it probably does not even SUPPORT USB 3.0, USB 3.0 is a 5 gbit/second bit rate! USB 1.0 is 1.5 Mbit/sec (called Low Speed), USB 1.1 is 12 Mbit/sec (Called full speed), and USB 2.0 is 480 Mbit/sec (called High Speed). It is showing your port 4, Dev 2 as 480 M, so that should be USB 2.0. So, it may be that your CPU doesn't have enough cycles to process the video. Are you using software stepping on that machine? That would eat up most of the CPU cycles.
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