[Dell Latitude E6540] wifi slider is not enabled

[Taihsiang Ho]

Dell Latitude E6540 (CID 201306-13679) on 12.04.4

Steps to reproduce the bug:
1. switch the wifi slider
2. observe the system [a]
3. switch back the wifi slider
4. observe the system [b]

Expected results:
[a]: wireless indicator on desktop closed. "rfkill list" showed hardware block yes
[b]:wireless indicator on desktop closed. "rfkill list" showed hardware block no

Actual results:
the wireless indicator on desktop and "rfkill list" message don't change.

----------------

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.11.0-18-generic 3.11.0-18.32~precise1
ProcVersionSignature: Ubuntu 3.11.0-18.32~precise1-generic 3.11.10.4
Uname: Linux 3.11.0-18-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.11.0-18-generic.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: PCH [HDA Intel PCH], device 0: ALC292 Analog [ALC292 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 1782 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 1782 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'MID'/'HDA Intel MID at 0xf7c34000 irq 46'
   Mixer name : 'Intel Haswell HDMI'
   Components : 'HDA:80862807,80860101,00100000'
   Controls : 21
   Simple ctrls : 3
Card1.Amixer.info:
 Card hw:1 'PCH'/'HDA Intel PCH at 0xf7c30000 irq 47'
   Mixer name : 'Realtek ALC292'
   Components : 'HDA:10ec0292,102805be,00100001'
   Controls : 28
   Simple ctrls : 13
Date: Wed Mar 26 04:15:39 2014
HibernationDevice: RESUME=UUID=5b74ffc9-a302-422f-b864-9d9b3db953df
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
MachineType: Dell Inc. Latitude E6540
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=1dd7e53d-2078-4411-9614-769f5ca1acd1 ro quiet splash initcall_debug vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-18-generic N/A
 linux-backports-modules-3.11.0-18-generic N/A
 linux-firmware 1.79.10
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux-lts-saucy
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0RDM2X
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd07/18/2013:svnDellInc.:pnLatitudeE6540:pvr01:rvnDellInc.:rn0RDM2X:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6540
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Taihsiang Ho (tai271828)]

Dell Latitude E7440 (CID 201304-13408) on 12.04.4 has this issue.
It has Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032]

[Taihsiang Ho (tai271828)]

Dell Latitude E7440 (CID 201304-13408) on 12.04.4,
I found more information to reproduce this bug:

Steps to reproduce the bug:
1. make sure the slider is "ON"
2. power on the machine
3. rfkill list shows the hard block is "no"
4. connect to a wifi, make sure the wireless work by ping command
5. switch the slider to be "Off"
6. ping again to make sure the wifi work
7. reboot
8. rfkill list shows the hard block is "yes", network-manager says "wireless is disabled by hardware switch"
9. ping, now it fails (connect: Network is unreachable.
10. switch the slider to be "On"
11. now wireless of network-manager is back and ping is ok. rfkill list show the hard block is "no"

That is, the slider could only turn on the wifi but not turn off the wireless.

[Po-Hsu Lin (cypressyew)]

Verified with 12.04.5 on 201304-13408 (3.13.0-32), this issue does not exist

[penalvch (penalvch)]

Po Hsu-Lin / Taihsiang Ho, as the Saucy enablement kernel is EoL as per https://wiki.ubuntu.com/Kernel/LTSEnablementStack this bug report is being closed due to Po's last comment https://bugs.launchpad.net/ubuntu/+source/linux-lts-saucy/+bug/1297714/comments/4 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.