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- #USB ROOT HUB XHCI DRIVER WINDOWS 8.1 SONY VAIO PRO#
- #USB ROOT HUB XHCI DRIVER WINDOWS 8.1 SONY VAIO WINDOWS 8#
This issue does not appear to happen on Windows 7 but can eventuallyīe reproduced on the same computer with Windows 8 equipped with an Intel USB 3.0 controller. (It also helps that we're basically next door neighbors as we're both located in Bellevue, WA).Īt first we suspected it might have been an issue with the firmware on our hub chipsets but after many different test cases we have narrowed this down to what we believe is a driver issue. We're involved mainly because our primary product line is comprised of USB docking stations and hubs and we have run into this issue. We don't have any direct involvement in driverĭevelopment, but we've been reporting our findings to Microsoft and hopefully they will be able to analyze the data and come up with a solution. That being said, when and if we will see a solution is hard to say.
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We've been working with Microsoft behind the scenes and rest assured they are aware an issue exists. Device 1-1 is connected to the external USB port.
#USB ROOT HUB XHCI DRIVER WINDOWS 8.1 SONY VAIO PRO#
NOTE: Devices 1-2 thru 1-6 are built in to the Surface Pro 2.
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17031 ġ-1 Generic USB Hub (Plugable USB2-HUB-AG7)ġ-1-1 USB Composite Device - HID, Audio (500mA Logitech USB speakers)ġ-1-2 USB Composite Device - Audio, HID (500mA Logitech USB speakers)ġ-1-3 USB Composite Device - HID, Audio (500mA Logitech USB speakers)ġ-1-4 USB Composite Device - HID, Audio (500mA Logitech USB speakers)ġ-2 USB Composite Device - Marvell AVASTAR (WiFi/Bluetooth)ġ-3 USB Composite Device - HID, HID, HID (touch cover, keyboard, mouse, pen, sensors, buttons)ġ-4 USB Composite Device - HID, HID (touch screen)ġ-5 USB Composite Device - Image (front camera)ġ-6 USB Composite Device - Image (rear camera)
![usb root hub xhci driver windows 8.1 sony vaio usb root hub xhci driver windows 8.1 sony vaio](https://i.ytimg.com/vi/EkuaIy14piY/hqdefault.jpg)
Problems: No sound from speaker (1-1-4), Not enough USB controller resources.ġ USB Root Hub (xHCI) - Intel USB 3.0 xHCI (Microsoft). USB Enumeration on Surface Pro 2 with (4) external USB speakers on Plugable USB2-HUB-AG7 Not the Surface Pro 2 which only exposes a port on the Intel USB 3.0 controller. Most PCs have separate USB2 ports with a more "mature" USB 2.0 controller. Seems to be a USB 2.0 resource limit with the xHCI or root hub driver. This 7-port hub also presents itself as two chained 4-port hubs. Adding the 2nd speaker causes "Not enough USB controller resources".ģ) Using Plugable USB3-HUB7A, the results were identical to the D-Link DUB-H7. When I daisy chain the USB2-HUB-AG7 off the DUB-H7, I can only get one USB speaker to run on the USB2-HUB-AG7 child hub. I also found this 7-port hub presents itself as two chained 4-port hubs internally, and I am able to get (4) speakersĪttached to the hub if I put (3) of them on the ports associated with the parent hub. I get the error when I attach (4) gamepads and (3) speakers, but not when I attach (5) gamepads and (2) speakers. I also get the error when I attach (0) gamepads and (4) speakers, but not when I attach (0) gamepads and (3) speakers.Ģ) Using D-Link DUB-H7 connected directly to the Surface Pro 2 USB Audio speakers, 500mA USB 1.0 and 1.1 devices respectively.ġ) Using Plugable USB2-HUB-AG7 connected directly to Surface Pro 2 On a Surface Pro 2 running latest Microsoft USB 3.0 xHCI Host Controller driver (.13031, ) I'm seeing this USB controller resources error with three different USB hubs.