Bug 126049 - USB modem: cdc_acm driver not loaded, modprobe.conf not configured
Summary: USB modem: cdc_acm driver not loaded, modprobe.conf not configured
Status: CLOSED DUPLICATE of bug 100503
Alias: None
Product: Fedora
Classification: Fedora
Component: kudzu   
(Show other bugs)
Version: 2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Bill Nottingham
QA Contact: David Lawrence
Depends On:
TreeView+ depends on / blocked
Reported: 2004-06-15 15:29 UTC by John Reiser
Modified: 2014-03-17 02:46 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2006-02-21 19:04:05 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
/etc/sysconfig/hwconf (6.56 KB, text/plain)
2004-06-15 15:30 UTC, John Reiser
no flags Details

Description John Reiser 2004-06-15 15:29:03 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040510

Description of problem:
USB modem is detected and configured at boot in /etc/sysconfig/hwconf,
but kernel module cdc_acm is not loaded, nor is the module listed in
/etc/modprobe.conf.  This causes all downstream uses to fail because
/dev/input/ttyACM0 cannot be opened.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. During GRUB boot screen, plug in and turn on USB modem.
2. Boot.


Actual Results:  kudzu detects and configures modem in
/etc/sysconfig/hwconf, but lists no driver.  kudzu forgets to load
kernel module cdc_acm, so attempts to use modem during current boot
will fail until kernel module cdc_acm is loaded manually.  kudzu
forgets to put cdc_acm in /etc/modprobe.conf, so future boots [during
which kudzu is quiet because /etc/sysconfig/hwconf is already OK] also
fail because cdc_acm is not loaded.

Expected Results:  kudzu detects and configures modem in
/etc/sysconfig/hwconf, and lists cdc_acm as driver.  kudzu causes
kernel module cdc_acm to be loaded.  kudzu lists cdc_acm in
/etc/modprobe.conf so that modem works OK in future boots.

Additional info:

Similar problem has existed in RedHat distributions for two years. 
See bug 100503 and bug 98790.

Contents of /etc/sysconfig/hwconf will be attached.

Comment 1 John Reiser 2004-06-15 15:30:27 UTC
Created attachment 101151 [details]

Comment 2 Bill Nottingham 2004-06-29 04:21:19 UTC

*** This bug has been marked as a duplicate of 100503 ***

Comment 3 Red Hat Bugzilla 2006-02-21 19:04:05 UTC
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.

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