View Full Version : Ubuntu 11.04 ASUS G74Sx USB 3.0 Support

August 24th, 2011, 05:19 AM
Hello, I have an ASUS G74Sx and am currently running Ubuntu 11.04 x64. I have a USB 3.0 port, however, it will not detect any media (1.1-3.0)

lsusb output:

Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 0bda:0139 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 1bcf:2885 Sunplus Innovation Technology Inc.
Bus 001 Device 003: ID 13d3:3304 IMC Networks
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

It is recognized as a USB 3.0 device

lusb -v output for 3.0 device:

Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 3
bMaxPacketSize0 9
idVendor 0x1d6b Linux Foundation
idProduct 0x0003 3.0 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.38-11-generic xhci_hcd
iProduct 2 xHCI Host Controller
iSerial 1 0000:04:00.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12

dmesg | grep usb output:

[ 3.394482] usb usb3: No SuperSpeed endpoint companion for config 1 interface 0 altsetting 0 ep 129: using minimum values

I've tested a USB 3.0 External HDD, a USB 2.0 flash drive, a USB 2.0 keyboard and an old USB 1.1 keyboard, nothing recognizes.

August 25th, 2011, 11:38 PM
I am also using The asus g74sx and im having the same issues, im sure these issues will be fixed as soon as they can, I know the g74 is new

September 6th, 2011, 07:53 PM
Same problem on my Clevo W150HNQ.


Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Devices won't even charge from the 3.0 ports.

September 16th, 2011, 07:04 AM
Has this issue been solved? I have the exact same issue and exact same problems and exact computer. Windows 7 operates normally with my 3.0 port but in ubuntu its not seen at all and doesn't even seem to be powering up.

September 30th, 2011, 05:26 AM
Same system (G74SX), same problem here, no solution yet

September 30th, 2011, 05:45 AM
It doesn't help with 11.04, but I have a G74S and its USB 3.0 port can detect media under Oneric. I don't know if it can achieve USB 3.0 speeds, but it can be used...

October 12th, 2011, 06:10 AM
I too have an ASUS G74Sx, and following the advice in a previous post, at
I was able to get my Ubuntu 11.04 (x64) based system to at least "see" the USB3 port, but, not sure its treating it as USB3. I don't have any USB3 devices to test it, but, was glad to at least have a third USB2 port. In short, added
to the kernel options in GRUB boot file.
I hope the link might also help others but, I have little idea what other effects "nomsi" option may have or what it "really" means.

October 14th, 2011, 01:05 AM
Changing grub the proposed way worked for me. USB port is active now. Seems to be fast as well. Copied 1gb to my usb3.0 32gb thumb drive at 40mb/s I think that might be usb 3.0 speed.

October 21st, 2011, 03:49 AM

I have updated to the latest release of Ubuntu and found that my USB 3.0 port works but it only gets speeds of USB 2.0 at best. My fastest speed has been a little over 30 MB/sec. Using windows I often get 140 MB/sec. and more.

So if you just need the port to work the latest update will do it but if you want the speed you won't get it just by updating. Also, when I upgraded my wireless works without fail when it didn't before as well as my blue ray drive seems to work but need to test further. There are several other minor things that are now working much better but usb 3.0 speeds are not there as of yet.

November 17th, 2011, 02:11 PM
My USB 3.0 port is detected and works.

However, I get the same speed (according to Disk Utility) when the disk is plugged in to the USB 2 port(s), i.e. about 40MB/s.

Setup: Ubuntu 11.10, G74SX, WD500 passport, using original cable.