-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
HI Alan et al,
I believe that I have solved the problem (at least for USB 1.x) while
using the 2.6.12.3 kernel. In summary, I changed two things at once
(yeah, I know I shouldn't do that):
1) I added a pci-usb controller with a different chipset
2) I compiled/installed the ehci-hcd kernel module
My USB hardware on the dual Opteron server:
# lspci -v | grep -i usb
#add on pci-usb controller
0000:00:08.0 USB Controller: OPTi Inc. 82C861 (rev 10) (prog-if 10 [OHCI])
# these are from the motherboard chipset
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB
1.1 Controller (rev 81) (prog-if 00 [UHCI])
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB
1.1 Controller (rev 81) (prog-if 00 [UHCI])
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB
1.1 Controller (rev 81) (prog-if 00 [UHCI])
0000:00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
(prog-if 20 [EHCI])
Previously, I had neither compiled the ehci-hcd.ko module nor had I
enabled USB 2.0 on my motherboard (the motherboard allows one to select
USB 1.0 or USB 2.0). Since the iAudio G3 supposedly supports USB 2.0, I
thought I would try enabling USB 2.0. I compiled and loaded ehci-hcd
and now I can mount and access the iAudio G3 reliably on the UHCI and
OCHI ports.
Does it make sense that adding the ehci-hcd module should make this
suddenly work even in USB 1.x mode?
I'm pleasantly surprised that the speed of access is *much* faster than
on the laptop (on the order of 6x faster on writes). My CPU goes to
100% while accessing the G3, so it makes sense to me that a much faster
processor (1.8GHz Opteron vs. 1.0 GHz Athlon) would help. Would you agree?
Now, I can't reliably access the G3 (or my Epson scanner) when it is
plugged into the EHCI port, but that is the subject of a future thread.
Later, and thanks!
Andy
- --
Andy Stewart, Founder
Worcester Linux Users' Group
Worcester, MA, USA
http://www.wlug.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.5 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
iD8DBQFDFlcjHl0iXDssISsRAnDeAJ9H+DG1LnXxzUBx+UxbtnsDTCNlzwCdEaKN
0X7UwSfWJ8UXJjlHSzeMSt0=
=yijX
-----END PGP SIGNATURE-----
-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
