Public bug reported:
It seems that sometimes my wireless network interface disappears after
suspend/resume.
When this happens, listing hardware with lshw does not show the wireless
adapter.
Reloading the wireless kernel module drivers does not work!
The command I'm using to do that is the following:
sudo rmmod iwlwifi mac80211 cfg80211 ; sudo modprobe cfg80211 ; sudo modprobe
iwlwifi ; sudo modprobe mac80211
And finally (and this is quite weird to me), a "soft restart" of the
computer does not work! That is, selecting the "Restart" option from the
logout menu doesn't work. The last time this happened I tried a "soft
restart" 4 times and every time the wireless interface did not come up.
However, as soon as I did a "hard reboot" (selecting Shutdown from the
logout menu, waiting a few seconds and then starting the computer again)
fixed the problem right away.
This probably indicates that the wireless controller itself (hardware)
is in some undefined state.
I tried adding adding the following line to /etc/pm/config.d/config:
SUSPEND_MODULES="$SUSPEND_MODULES iwlwifi"
That has not solved the problem.
As I stated, I don't think this is happening every time I
suspend/resume, but when it happens I consistently need a "hard reboot"
to fix the problem and get my wireless interface up again. I will do a
few suspend/resume cycles later to try to see how frequently this
happens.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-19-generic 3.5.0-19.30
ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
Uname: Linux 3.5.0-19-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: stefan 2112 F.... pulseaudio
CRDA:
country IS:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5490 - 5710 @ 40), (N/A, 27), DFS
Date: Thu Dec 13 10:35:51 2012
HibernationDevice: RESUME=UUID=339a99de-eef3-452e-b55c-a229bee214e5
InstallationDate: Installed on 2012-09-20 (83 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120905)
MachineType: LENOVO 2347W2U
MarkForUpload: True
ProcEnviron:
LANGUAGE=
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic
root=UUID=c8916e6c-a99f-43f1-9d8c-c1daf21fedac ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-19-generic N/A
linux-backports-modules-3.5.0-19-generic N/A
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/25/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G1ET41WW (1.16 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2347W2U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG1ET41WW(1.16):bd05/25/2012:svnLENOVO:pn2347W2U:pvrThinkPadT430:rvnLENOVO:rn2347W2U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2347W2U
dmi.product.version: ThinkPad T430
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug quantal
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https://bugs.launchpad.net/bugs/1089856
Title:
Wireless network doesn't resume after suspend/resume (sometimes)
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