Public bug reported:
I just upgraded to Ubuntu 16.04, and now whenever I wake up my laptop
from sleep (hibernate doesn't work due to encrypted home directory), I
am unable to connect to any wlan network. After a hot reboot or cold
start everything is back to normal.
Network manager would allow me to select already known wlan networks
through "connect to hidden network", however, it would not allow me to
establish the actual connection (connect button never becomes active).
I will attach four files to this bug report:
1. dmesg-pastreboot: dmesg after a hot reboot
2. dmesg-pastsleep: dmesg after wakeup from sleep
3. syslog-pastreboot: syslog snippet from timeframe after reboot
4. syslog-pastsleep: syslog snippet from timeframe after wakeup from sleep
Please let me know, if you need any further data or info.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-22-generic 4.4.0-22.40
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rudolf 2944 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 22 22:31:10 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-05-24 (1825 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: LENOVO 429135G
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic
root=UUID=080f751d-bbec-44b2-bd86-f4db52f4dddf ro quiet splash
i915.semaphores=1 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-22-generic N/A
linux-backports-modules-4.4.0-22-generic N/A
linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-05-18 (4 days ago)
dmi.bios.date: 04/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET42WW (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 429135G
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:bvr8DET42WW(1.12):bd04/01/2011:svnLENOVO:pn429135G:pvrThinkPadX220:rvnLENOVO:rn429135G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 429135G
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Attachment added: "dmesg status past a hot reboot"
https://bugs.launchpad.net/bugs/1584533/+attachment/4668299/+files/dmesg-pastreboot
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https://bugs.launchpad.net/bugs/1584533
Title:
Lenovo X220 unable to wlan after resume from sleep
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