Just wanted to notify any of you that may have encountered the same problem:
My solution was to go to the BIOS, and disable USB 2.0 support. This means missing out the 480Mbit/sec that USB 2.0 allows,and take the 12 Mbit/sec... But at least Linux boots. Alternatively, simply make sure, this way or another, that the ehci-hcd module isn't ever loaded. It's this module that appears to hang.
As a matter of fact, this shouldn't be much of a surprise: This module is considered quite experimental. I only wonder what it does in a mainstream distro.
Regards,
Eli
-------- Original Message --------
| Subject: | [Haifux] USB caused RH 7.3 to hang |
|---|---|
| Date: | Tue, 31 Dec 2002 12:12:20 +0200 |
| From: | Eli Billauer <[EMAIL PROTECTED]> |
| To: | Haifa Linux Club Mailing list <[EMAIL PROTECTED]> |
Hello All. Here is a strange thing: When I boot Redhat 7.3 (2.4.18) with my USB webcam attached, the system hangs (freeze, no oops message) after the two USB drivers are installed, and before HDI and mouse should be installed.
A few extra hints:
* Without the webcam, my USB mouse works great.
* I'm running on Pentium 4 with a D845PESV mother board (the USB is
built-in).
* I had no problem with insmoding the usbvideo and the modules it
depends on (no webcam attached, of course)
* Google's contribution: People are talking about a buggy USB driver,
and some IRQ sharing. Found nothing that really fitted.
So, fellows, can anyone tell me how to start solving such a thing?
Eli
P.S. My lsmod at runlevel 1, prior to insmod'ing usbvideo (which was OK)
is as follows:
videodev 6624 0 (unused)
soundcore 6692 0 (autoclean)
ppp_deflate 4032 0 (autoclean)
zlib_deflate 21344 0 (autoclean) [ppp_deflate]
ppp_async 8256 0 (autoclean)
ppp_generic 24108 0 (autoclean) [ppp_deflate ppp_async]
slhc 6508 0 (autoclean) [ppp_generic]
binfmt_misc 7556 1
parport_pc 18724 1 (autoclean)
lp 8864 0 (autoclean)
parport 34208 1 (autoclean) [parport_pc lp]
autofs 12164 0 (autoclean) (unused)
8139too 16448 0
mii 2408 0 [8139too]
e100 76116 0
ipchains 43560 0
ide-cd 30272 0 (autoclean)
cdrom 32192 0 (autoclean) [ide-cd]
nls_cp437 5120 1 (autoclean)
vfat 12092 1 (autoclean)
fat 37400 0 (autoclean) [vfat]
nls_iso8859-1 3488 3 (autoclean)
ntfs 55616 2 (autoclean)
mousedev 5312 0
hid 21344 0 (unused)
input 5984 0 [mousedev hid]
ehci-hcd 19552 0 (unused)
usb-uhci 24484 0 (unused)
usbcore 73152 1 [hid ehci-hcd usb-uhci]
ext3 67136 2
jbd 49400 2 [ext3]
(and I managed to insmod usbvideo as well with no problem)
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