How do I resolve USB issues with VIA / VIATECH controllers?

Listed below are various solutions to cure USB connectivity issues with the mentioned USB controller.

Recommended BIOS setup (Call PC vendor for support):
• Power Management - Disabled
• Plug and Play Operating System - Enabled (Disabling Plug and Play OS can cause errors in Windows IRQ Steering). Some systems may perform better with this option Disabled. Try both if you are having IRQ problems.
• IRQ's Assigned - Auto or Operating System
• USB Keyboard - DOS or BIOS
• Write Pipeline Cache (FIC Motherboards and others) - Disabled
• System Bios Cacheable - Disabled
• Chip Performance Speed - Normal
Windows 98 SE: If your PC has an AMD processor faster than 350 MHz or a VIA Host controller installed this may cause the USB device to not enumerate. Refer to Microsoft Knowledge Base document Q240075 for full details and to download the patch: Http://www.microsoft.com

Enable “Disable USB Error Detection” in Device Manger: Right Click on My Computer and select Properties. Now click the device manager tab. Expand (Click +) the Universal Serial Bus controllers and this will now display your Chipset. Right click your controller and select properties and you will find the check box for “Disable USB Error Detection” in the advanced tab.

Windows 2000: If the computer hangs when devices are connected or Windows Plug and Play doesn’t work you will need to check the following:
Consult these 2 documents from the Microsoft Knowledge Base: Q246755 and Q233163.
VIA technologies chipsets later than REV 05 are not supported by Windows 2000.

More information and solutions can be found at the following Links:
http://www.viaarena.com
http://www.usbman.com
http://www.usb.org

If you cannot find a solution within the resources supplied a Hardware solution is available. Installing a PCI/USB Card will provide a workaround if your USB Host Controllers are not functioning correctly.

Article: KB020090 Language: English Product Range: Ink Jet

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