kernel-packages team mailing list archive

[ullix <1456585@xxxxxxxxxxxxxxxxxx>]

I used mkusb following this page https://help.ubuntu.com/community/mkusb
and (without pre-treating the vivid-desktop-amd64.iso  with isohybrid)
attempted another stick creation. And presto, it works!

Tried booting on both my laptops, the present new DELL XPS13 and an old
thinkpad T60, and it booted on both. Then it gets strange. On the T60
the menu under the panel network icon showed the WIFI entry, but greyed
out - could not be selected. With this laptop I had never an issue with
WIFI, albeit limited to 2.4GHz.

On the DELL, there was not even an entry for WIFI in the panel menu.
Looked into "Additional Driver" and found the Broadcom STA listed, but
inactiv. Activated, applied and there was the WIFI menu. I can connect
to my lan!

Still, no sign of my 2.4GHz signal from the same router as the 5GHz
signal. I verified with my Nexus7 tablet, that both signals are present.

Now it gets even stranger. On the panel network icon menu I see a signal
from my neighbourhood on 2.4GHz. Again, verified with the Nexus that it
is indeed on 2.4GHz. I can click on it on my DELL (but it needs a
password, so here it ends).

But my local 2.4GHz signal is better than -30dB, while the neighbour's
is very weak at -90 dB and still seen by the DELL. I believe this is a
million fold difference!

I inactivated my router's 5GHz signal, so that it would only offer
2.4GHz - DELL now doesn't find anything (except still the neighbour's
weak signal).

I tried to manually create my 2.4 network - no luck.

'iwlist wlan0 freq' finds 14 channels 2.4GHz and another 18 of 5 GHz.
But this may not mean anything? Is there anything to determine whatever
the wl module sees on 2.4GHz?

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to bcmwl in Ubuntu.
https://bugs.launchpad.net/bugs/1456585

Title:
  14e4:43b1 DELL XPS 13 (9343) Only wireless 5GHz works, but not 2.4GHz

Status in Broadcom 802.11 Linux STA driver:
  New
Status in bcmwl package in Ubuntu:
  Triaged
Status in linux package in Ubuntu:
  Invalid

Bug description:
  This laptop came factory preinstalled with Ubuntu 14.04, but it had
  and still has way too many problems.

  I have now kernel 3.16.0-37-generic running. The wireless driver is
  wl, installed from bcmwl-kernel-source. I have wireless working at
  5GHz with good speed, everything well. However, I can't connect to
  wireless on 2.4GHz.

  Before I had kernel 3.13.0-52-generic, which had the same problem. I
  tried kernel 4.1.0-rc2 and rc3, but both failed on installing from
  bcmwl-kernel-source.

  Trying "iwlist wlan0 freq" I get a list of channels 1-14 at 2.4GHz,
  and 32-66 at 5GHz. Still, only the 5GHz works. Other devices in my
  house do connect well to the 2.4GHz (from a Fritzbox router).

  "iwlist wlan0 scan" has "no scan result" when 5GHz is disabled, and
  finds one network at 5.18GHz when enabled.

  Network controller [0280]: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
  	Subsystem: Dell Device [1028:0019]

  ---
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ullix      1839 F.... pulseaudio
   /dev/snd/controlC0:  ullix      1839 F.... pulseaudio
  CurrentDesktop: MATE
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-trusty-amd64-20140620-0
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=7b6c248b-36d3-4dcf-9e9e-427d50206af6
  InstallationDate: Installed on 2015-04-24 (25 days ago)
  InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
  MachineType: Dell Inc. XPS 13 9343
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-37-generic root=UUID=fda802ca-9257-4fed-bb0d-9f4756dca419 ro pcie_aspm=force radeon.modeset=0 plymouth:debug drm.debug=0xe nouveau.modeset=0 video.use_native_backlight=1 quiet splash pcie_aspm=force radeon.modeset=0 nouveau.modeset=0 video.use_native_backlight=1 "acpi_osi=Windows 2013"
  ProcVersionSignature: Ubuntu 3.16.0-37.51~14.04.1-generic 3.16.7-ckt9
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-37-generic N/A
   linux-backports-modules-3.16.0-37-generic  N/A
   linux-firmware                             1.127.11
  Tags:  trusty
  Uname: Linux 3.16.0-37-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare scanner sudo tape video
  _MarkForUpload: True
  dmi.bios.date: 03/25/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0TM99H
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd03/25/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0TM99H:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/broadcom-sta/+bug/1456585/+subscriptions