8086:4238 [Lenovo ThinkPad T430 2347] Wireless network doesn't resume after suspend/resume (sometimes)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
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/
SUSPEND_
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-
ProcVersionSign
Uname: Linux 3.5.0-19-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
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=
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=
RelatedPackageV
linux-
linux-
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.
dmi.board.name: 2347W2U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 2347W2U
dmi.product.
dmi.sys.vendor: LENOVO
I should mention that this bug was reported when the wireless interface was working. If it helps I can try to get the problem to appear and run some commands and send in the result, I will just need some instructions on what exactly I should do.