kernel-packages team mailing list archive

[Lucas Partridge <1286552@xxxxxxxxxxxxxxxxxx>]

I seem to be in a similar position to Nicolas. Before a suspend, with
wifi working, WWAN is disabled according to 'nmcli nm'. Then, after
suspending, with wifi not working, WWAN is enabled.

However, sometimes wifi doesn't work even after restarting my Dell
laptop and WWAN is disabled after restarting regardless of whether or
not wifi is working. So the WWAN enabled/disabled may be a red herring.

I've also noticed link=yes in the 'configuration' entry for the wireless
adapter section of 'sudo lshw -C network' when wifi is working but
link=no when wifi does not work.  But maybe the link attribute is just
another way of indicating whether it's working or not (i.e., an effect
rather than a cause). I don't know what the 'link' value means.

Wifi used to reconnect for me without any problems on my Dell in 12.04
LTS. It's only since upgrading to 14.04 I've had these problems
(http://ubuntuforums.org/showthread.php?t=2218612). Interestingly, wifi
fails to reconnect after suspending if I'm running off the 14.04 Live CD
too. Presumably wifi would reconnect successfully after suspending if I
was running  off a 12.04 Live CD but I haven't tried that.  Maybe if we
ran these or other commands before and after suspending on 12.04 and
14.04 Live CDs we could isolate what's changed.

** Attachment added: "before_suspend_wifi_working.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1286552/+attachment/4096909/+files/before_suspend_wifi_working.txt

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https://bugs.launchpad.net/bugs/1286552

Title:
  No wifi after suspend

Status in “linux” package in Ubuntu:
  Confirmed
Status in “network-manager” package in Ubuntu:
  Confirmed

Bug description:
  After suspending ubuntu the wifi doesn't work. The solution given here
  (http://askubuntu.com/questions/368671/ubuntu-13-10-wifi-not-re-
  connecting-after-suspend) worked for me but when I have updated my
  Ubuntu now it won't work. I have tried to test mainline kernel but it
  won't to boot with it.

  To reproduce the bug : just suspend the computer and then power it.
  There's no wifi network until you restart the computer.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.4
  ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
  Uname: Linux 3.11.0-15-generic i686
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: i386
  CrashDB: ubuntu
  Date: Sat Mar  1 15:20:39 2014
  InstallationDate: Installed on 2013-12-30 (61 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release i386 (20131017)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)
  ---
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  meradi     1503 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=e71568e2-e875-4053-b3b7-2046540e78bf
  InstallationDate: Installed on 2013-12-30 (61 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release i386 (20131017)
  MachineType: Hewlett-Packard HP Compaq 6830s
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=3eaae47b-7485-4723-8b3e-9f6dac7a01e4 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116.2
  Tags:  saucy
  Uname: Linux 3.11.0-15-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  WifiSyslog: Mar  1 15:34:33 meradi-HP-Compaq-6830s kernel: [ 4581.474196] perf samples too long (5002 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
  dmi.bios.date: 03/12/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68PZD Ver. F.0C
  dmi.board.name: 30E9
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 95.1C
  dmi.chassis.asset.tag: CNU91609Y2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68PZDVer.F.0C:bd03/12/2009:svnHewlett-Packard:pnHPCompaq6830s:pvrF.0C:rvnHewlett-Packard:rn30E9:rvrKBCVersion95.1C:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq 6830s
  dmi.product.version: F.0C
  dmi.sys.vendor: Hewlett-Packard

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