Bug 435113

Summary:	Hang at graphical login if Huawei E220 USB modem plugged in
Product:	[Fedora] Fedora	Reporter:	Robin Green <greenrd>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED WORKSFORME	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	8
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-02-29 15:58:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Robin Green 2008-02-27 13:42:47 UTC

Description of problem:
Screen goes blank after rhgb, and then nothing happens, if I have my Huawei USB
modem plugged in. Nothing in /var/log/messages. (However, syslog is still alive
- if I disconnect the USB modem, that gets recorded in /var/log/messsages)

Version-Release number of selected component (if applicable):
kernel-2.6.23.15-137.fc8

How reproducible:
Always

Steps to Reproduce:
1. Plug in USB modem
2. Switch on computer
  
Additional info:
This bug does NOT occur with kernel-2.6.24.2-7.fc8.

Bus 003 Device 002: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem

NOTE: I had previously made the following two changes to my system, that I found
on a blog at http://www.evil.ie/bleh/:

1. This is to avoid the modem getting disconnected:

--- /usr/share/hal/fdi/preprobe/10osvendor/20-broken-usb-sticks.fdi.orig
+++ /usr/share/hal/fdi/preprobe/10osvendor/20-broken-usb-sticks.fdi
16:16:23.000000000 +0000
@@ -16,6 +16,11 @@
</match>
</match>
<!-- some usb sticks don't like polling -->
+     <match key="@storage.originating_device:usb.vendor_id" int="0x12d1">
+       <match key="@storage.originating_device:usb.product_id" int="0x1003">
+         <merge key="info.ignore" type="bool">true</merge>
+       </match>
+     </match>
       <match key="@storage.originating_device:usb.vendor_id" int="0x054c">
         <match key="@storage.originating_device:usb.product_id" int="0x008b">
           <merge key="storage.media_check_enabled" type="bool">false</merge>

2. This is to try and get the modem recognised by NetworkManager (which didn't
work for me):

install http://www.evil.ie/3/10-3g-modem.fdi to
/usr/share/hal/fdi/information/20thirdparty/10-3g-modem.fdi

Comment 1 Robin Green 2008-02-27 13:44:39 UTC

D'oh! Got the kernel versions the wrong way around above!

This bug DOES occur with kernel-2.6.24.2-7.fc8.
This bus DOES NOT occur with 2.6.23.15-137.fc8.

Comment 2 Chuck Ebbert 2008-02-27 16:28:06 UTC

Have you installed the latest firmware update? (version 11.117.07.00.67)

Comment 3 Pete Zaitcev 2008-02-27 19:21:34 UTC

See also bug 253096 (but keep in mind that we did not have any such hangs
among reporters of that bug, so something else may be in play here).
Please don't dup until we know what is happening.

Comment 4 Robin Green 2008-02-28 18:13:28 UTC

(In reply to comment #2)
> Have you installed the latest firmware update? (version 11.117.07.00.67)

No - Wikipedia says doing such may erase APN settings. I don't know how to
safely do that, given that I'm using a modem with a custom ISO image on it from
Hutchison 3G (aka 3).

Comment 5 Robin Green 2008-02-28 18:15:31 UTC

(In reply to comment #3)
> See also bug 253096 (but keep in mind that we did not have any such hangs
> among reporters of that bug, so something else may be in play here).
> Please don't dup until we know what is happening.

The hal patch I applied (see above) is the same one mentioned as a workaround in
a comment to that bug.

Comment 6 Robin Green 2008-02-29 15:58:57 UTC

I upgraded my kernel and could no longer reproduce this.