Ubuntu
pm-utils package

No wifi after resume from suspend to ram (iwl3945 driver)

Bug #204040 reported by oli on 2008-03-19

This bug report is a duplicate of: Bug #162654: ipw2200 needs to be reloaded after suspend. Edit Remove

2

Affects		Status	Importance	Assigned to	Milestone
	pm-utils (Ubuntu)	Invalid	Medium	Daniel Hahler

Bug Description

After resume from suspend to ram, I can't connect to my wireless network.
"iwlist scanning wlan0" doesn't list any networks after resume.

Unloading and Reloading the iwl3945 module has no effect.

hp compaq nx7400

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"

nm-applet 0.6.6

uname -r
2.6.24-12-generic

lsmod | grep iwl
iwl3945 89844 0
iwlwifi_mac80211 219108 1 iwl3945
cfg80211 15112 1 iwlwifi_mac80211

modinfo iwl3945
filename: /lib/modules/2.6.24-12-generic/ubuntu/wireless/iwlwifi/iwlwifi/compatible/iwl3945.ko
license: GPL
author: Copyright(c) 2003-2007 Intel Corporation
version: 1.2.0
description: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux
srcversion: 8E95C617988943846696F97
alias: pci:v00008086d00004227sv*sd*bc*sc*i*
alias: pci:v00008086d00004222sv*sd*bc*sc*i*
depends: iwlwifi_mac80211
vermagic: 2.6.24-12-generic SMP mod_unload 586
parm: antenna:select antenna (1=Main, 2=Aux, default 0 [both]) (int)
parm: disable:manually disable the radio (default 0 [radio on]) (int)
parm: hwcrypto:using hardware crypto engine (default 0 [software])
(int)
parm: debug:debug output mask (int)
parm: disable_hw_scan:disable hardware scanning (default 0) (int)
parm: queues_num:number of hw queues. (int)
parm: qos_enable:enable all QoS functionality (int)

Revision history for this message

archdrone (archdrone) wrote on 2008-03-20:

#1

`modprobe -r iwl3945 && modprobe iwl3945` works for me but sometimes modprobe -r hangs while cpu on 100%

Revision history for this message

oli (oli23) wrote on 2008-03-20:

#2

Thanks archdrone,
I've tried it again with your workaround, it works for me too. Perhaps, I haven't wait long enough, yesterday.

/etc/default/acpi-support says:
# Note that network cards and USB controllers will automatically be unloaded
# unless they're listed in MODULES_WHITELIST
MODULES=""

Is there a way to unload & reload the module after! resume?

Revision history for this message

Chak Man Yeung (dasunst3r) wrote on 2008-03-25:

#3

This also happens on my Dell Inspiron E1505 with the Intel wireless card. My workaround is to turn on/off the wireless kill switch to turn the radio off and then back on.

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28:

#4

Confirming this. This seems to be a very recent regression (as in, the last day or so of Hardy updates). Will attach logs and such in subsequent comments.

Neither workaround works for me"modprobe -r iwl3945 && modprobe iwl3945" successfully reloads the driver but it still doesn't find any networks, and using the kill switch seems to still be broken per bug 193970.

$ uname -a
Linux gertrude 2.6.24-12-generic #1 SMP Wed Mar 12 23:01:54 UTC 2008 i686 GNU/Linux

Changed in acpi-support:
status:	New → Confirmed

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28:

#5

Output of "lspci -vvnn" Edit (12.3 KiB, text/plain)

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28:

#6

Output of dmesg immediately after boot (no attempt at suspend at this point) Edit (35.2 KiB, text/plain)

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28:

#7

Output of dmesg after resuming from suspend Edit (52.8 KiB, text/plain)

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28:

#8

Output of dmesg after resume and after running "modprobe -r iwl3945 && modprobe iwl3945" as root Edit (53.4 KiB, text/plain)

Revision history for this message

Mary Gardiner (puzzlement) wrote on 2008-03-28: I may not have the same bug

#9

My version of this bug seems to be a problem with pm-utils, so I have reported it separately as bug 208103.

Revision history for this message

Daniel Hahler (blueyed) wrote on 2008-03-28:

#10

You are all using gnome-power-manager to suspend/resume, correct?
g-p-m uses pm-utils, not acpi-support and there has been a fix in the latest pm-utils 0.99.2-3ubuntu6:
* Add debian/patches/98-unload_network_modules.patch: Unload/reload network
modules during suspend. Thanks to Matthew Garrett! (LP: #162654)

So, please check if it's till a problem after updating to this pm-utils version. If this fixes it, it's a duplicate of bug 162654.

Changed in acpi-support:
assignee:	nobody → blueyed
importance:	Undecided → Medium
status:	Confirmed → Incomplete

Revision history for this message

oli (oli23) wrote on 2008-03-29:

#11

You are right, Daniel - works fine now. I will set the bug status fixed.

Changed in pm-utils:
status:	Incomplete → Fix Released

Revision history for this message

Daniel Hahler (blueyed) wrote on 2008-04-02:

#12

Thank you for reporting back, I'm just marking it as dupe instead.

Changed in pm-utils:
status:	Fix Released → Invalid

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