Re: [gentoo-amd64] Re: ohci-hcd slows down boot

[Karol Krizka]

On Friday 21 October 2005 21:59, Duncan wrote:
> Karol Krizka posted <200510211844.12551.kkrizka@×××××.com>, excerpted
>
> below,  on Fri, 21 Oct 2005 18:44:06 -0700:
> > For some time I have been having this problem: when bottom the system
> > hangs for several minutes before continuing duing the "Checking for
> > ohci-hcd..." (I think, might be "Loading") stage. I am not sure what the
> > problem is and it has persisted through several kernel versions. Do you
> > know if there is a way to fix this? If not can it be removed?
>
> You could compile the kernel without the affected module.
>
> Note that with USB there are three bus standards to choose from, OHCI and
> UHCI are USB 1.x standards (UHCI is the Intel/Via solution, OHCI the
> community standard, doing more in hardware, lspci -v will usually list the
> controller with the interface you need) EHCI is USB 2.x).
>
00:02.0 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5) (prog-if 
10 [OHCI])
        Subsystem: nVidia Corporation Unknown device 0c80
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 20
        Memory at e0000000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2

00:02.1 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5) (prog-if 
10 [OHCI])
        Subsystem: nVidia Corporation Unknown device 0c80
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 18
        Memory at e0001000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2

00:02.2 USB Controller: nVidia Corporation nForce3 USB 2.0 (rev a2) (prog-if 
20 [EHCI])
        Subsystem: nVidia Corporation Unknown device 0c80
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 19
        Memory at e0004000 (32-bit, non-prefetchable) [size=256]
        Capabilities: [80] Power Management version 2

Ehh, I think I need OHCI. One thing that I forgot to mention is that I have a 
USB webcam plugged in and disconnecting seems to help. If there is no other 
solution I'll just connect it when I need it. 

I was wondering though if I just can't disable the check and load the module 
through modules.autoload.d/kernel-2.6. Would that work?

> You'll normally need only one of the above, UHCI, OHCI, or EHCI, possibly
> EHCI for USB 2.0 and one of the others, if your board offers some USB 1.x
> only, and some USB 2.x ports.  The only time you'd need both of the USB
> 1.x interface standards would be if you had one onboard and the second as
> a plugin board.  See the associated kernel config help items for each of
> the above options, for more details.
>
> Figure out which of the above you have, and disable the others, and it
> could fix your problem.  That's assuming, of course, that you don't have
> OHCI, thus the reason for the long pause trying to detect it.  If you have
> it and use it so can't disable it, and it's simply pausing a while to
> detect it, this obviously won't be a lot of help, but chances are, you
> don't have OHCI, so it takes a while trying to find it before giving up.
>
> --
> Duncan - List replies preferred.   No HTML msgs.
> "Every nonfree program has a lord, a master --
> and if you use the program, he is your master."  Richard Stallman in
> http://www.linuxdevcenter.com/pub/a/linux/2004/12/22/rms_interview.html

-- 
Karol Krizka