09-28-2012 05:47 PM
Some Envy 17's only have USB 3.0 ports. (Actually they have USB 2 as well but only internally)
This works fine in Windows 7 (with preloaded drivers) but is a BIG problem when using VMWare (which simply doesn't show host-connected USB 2 devices at all! - nothing works; for various reasons it's hard to say this is VMWare's fault) also when booting any legacy OS (e.g. Linux Live CD's, usb sticks,. etc - none of the USB ports work unless you're running a spanking new linux kernel+drivers off the cd; mostly this isn't the case)
This is a bit of a disaster for me; it's to do with support for the xHCI USB 3.0 interface in the southbridge; it's a wonderful thing in itself but if your OS doesn't support it you have NO USB CONNECTIVITY on your lappy! Dammit!
Ok so to get to the point; there is a fix and it's cheap and easy:
Googling reveals that some mobo's with ivy bridge chipset offer a "legacy usb" mode which switches the intel xHCI interface into legaby usb mode, and this makes the ports look like USB 2 to the OS, etc etc. This is a BIOS setting, and... my laptop doesn't have that option.
PLEASE, ON THE NEXT REV OF THE ENVY 17 3290NR BIOS, ENABLE THE 'LEGACY USB' OPTION - I NEED IT !
As far as I can tell this is a simple config option when building the bios, please please please give us this option. Anyone running any legacy OS on this laptop (either as a VM or booted) is screwed unless we can run the ports in backwards-compatible mode.
Thanks, otherwise this lappy is a beatiful, fast, shiny.. doorstop for me.