Currently, I'm running 2.6.37. I don't have an issue compiling 2.6.38-rc3 actually. Josh On Wed, Feb 2, 2011 at 2:54 PM, Greg KH <greg@xxxxxxxxx> wrote: > On Wed, Feb 02, 2011 at 02:36:49PM -0800, Joshua Scoggins wrote: >> Hello, >> >> Two months ago I purchased a USB 3.0 card for my computer and it >> worked amazingly well with Linux right out of the box. I got >> tired of having to reach behind my computer to switch cables so I >> purchased a USB 3.0 hub last week > > You did? From where? What specific model is this? I didn't think that > USB 3.0 hubs were on the market just yet (yes, I have one I found in > Japan, but it doesn't really work all that well...) > >> and while Linux detects the >> hub and knows its a SuperSpeed device it is automatically downgraded >> to USB 2.0 speeds. I checked the dmesg >> log and it said the following: >> >> "usb 2-1: new SuperSpeed USB device using xhci_hcd and address 2" >> <more messages> >> "hub 2-1:1.0: config failed, can't read hub descriptor (err -22)" >> >> The interesting part is that the transfer rate of all three of my USB >> 3.0 HDD enclosures in this mode is about 30-40 megabytes per second. >> If I plug the device into the ports on the back of the computer >> directly I get 80-125 megabytes per second so I know it's an issue >> with the hub. >> I even double checked that I didn't get scammed using Kinfocenter and >> it said that it was a USB 3.0 hub with a VIA chipset with a USB 2.0 >> hub >> subdevice. >> >> My question is am I doing something wrong or is this a bug? > > What kernel version are you using? Can you try 2.6.38-rc3 to see if > your hub works with that release? > > thanks, > > greg k-h > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
