Thanks for your replies,
I must have done something to kill the ehci driver, once I rebooted it worked as normal...even removing and inserting the ehci module didnt seem to fix it until the reboot....
Thanks again, I should know to try a reboot before posting about errors :) If it happens again ill try work out what I was doing when it died and post some details
Toby
Vojtech Pavlik wrote:
On Sat, Jul 03, 2004 at 03:46:25PM -0400, Alan Stern wrote:
On Sat, 3 Jul 2004, Stephen J. Gowdy wrote:
Stephen is right, your entry is missing three lines for the Manufacturer, Product, and SerialNumber.You devices entry for the EHCI doesn't look like I'd expect. The one I have is;
T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 5 B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 2.04 S: Manufacturer=Linux 2.4.21-15.0.2.EL ehci-hcd S: Product=NEC Corporation USB 2.0 S: SerialNumber=00:0a.2 C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=256ms
What is in your log files when your usb HCI drivers get loaded and when you plug in your device? Does /proc/interupts increase for the line with ehci on it?
On Sun, 4 Jul 2004, Toby Collett wrote:
Hi, I have a USB device which internally has a USB 2.0 hub with two high speed devices attached, i am connecting it to my laptop which has USB 2.0 support... The problem is that the USB 2 hub in the device allways gets attached to one of the UHCI hubs instead of the EHCI root hub. Is there a way to force it to attach as USB 2.0 and not fall back to UHCI?
The device works fine in windows at high speed...
To get more information about what's going on, turn on the USB debugging in your kernel's configuration and look at the system log or dmesg output for the time when the ehci-hcd driver is loaded.
The reason is pretty simple here. There is no EHCI driver loaded in the kernel, and the USB 2.0 hub in the listing is an external USB 2.0 hub, which obviously has to run at 12MBps, because it's driven by an UHCI controller.
Fix: Load the ehci-hcd driver.
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