USB changes.

Joe Altman fj at
Thu Apr 28 12:05:35 PDT 2005

On Thu, Apr 28, 2005 at 11:23:14AM -0700, Julian Elischer wrote:
> >+++
> >
> >Currently, I find my P4 hanging just after discovering the parallel
> >port and mounting disk; in other words, just here:
> >
> >ppc0: parallel port not found.
> >ad0: 28629MB <ST330620A> [58168/16/63] at ata0-master UDMA100
> >
> >but ->only<- when my Logitech USB mouse is plugged in. Now, if I
> >unplug it and hit reset (not Ctrl-Alt-Del; the keyboard is frozen) the
> >system boots, and I can obtain X w/ a functional mouse. Yesterday, of
> >course, prior to the USB change the system did not hang.
> >
> I saw this problem in testing ad THOUGHT I had checked in the fix..
> Can you confirm that usb.c ends with:
>    usb_cold_explore, NULL);




Aha...maybe this is it:


ll /usr/src/usr.sbin/usbd/

2734320 -rw-r--r--    1 root  wheel    169 Apr 25  2001 Makefile
2738254 -rw-r--r--    1 root  wheel   4460 Jun 22  2003 usbd.8
2736938 -rw-r--r--    1 root  wheel  30079 Nov 29  2003 usbd.c
2737339 -rw-r--r--    1 root  wheel   5046 Aug 27  2004 usbd.conf.5

Is that the one?

Here is a part of 'tail -25' on the file, showing the bottom:

/* check the event queue */
                if (handle_events && (FD_ISSET(fd, &r) || error == 0))
                        if (verbose >= 2)
                                printf("%s: processing event queue
                %son %s\n",
                                       (error? "":"due to timeout "),

So no, this file doesn't end in what you ask; I can't see anywhere
else it might live; is there some other usbd.c you need?

> >I noticed that some code was changed in between my discovery of the
> >hanging and my attempt to fix it:
> >
> >Apr 27 21:15 subr_bus.c
> >
> >but this change, and the subsequent world update, did not solve the
> >issue of the hanging mouse.
> the changes that you are refering to include some to defer probing of the 
> USB 1.1 busses untill after the USB2.0 busses have been configured.

Ah...okay; well, I was in the dark anyway, may as well whistle.

> I'll see if I can duplicate yuor problem.. I tested with several USB 1.1
> devices but a mounse was not amongst them.

Okay; it may be a one off, relative to me only, as I've seen no other
indications of issues. I am behind on my list reading, though.

> I assume it works right if you remove the mouse before booting and reinsert 
> it after the kernel has booted?

Yes; once I have a console, the mouse is detected:

ums0: Logitech USB Receiver, rev 1.10/23.02, addr 2, iclass 3/1
ums0: 7 buttons and Z dir.

Then, it works in X just fine; I forgot to test it on the console.

I don't care what you think. This is not a stylishly insouciant stroll
out of the jungle, here. It's more like we've fallen out of our trees
and rolled, butt-naked before the entire galaxy, downhill. That, and
we seem to have a teensy problem lifting ourselves off the ground.

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