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[ullix <1456585@xxxxxxxxxxxxxxxxxx>]

I managed to install the 4.1.0 rc4 kernel
uname -a
Linux xps13 4.1.0-040100rc4-generic #201505181436 SMP Mon May 18 18:38:10 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

but building the Broadcom wl module failed, the make.log is attached.

There is no wireless at all on this kernel


ullix@xps13:~$ sudo apt-get install --reinstall bcmwl-kernel-source 
[sudo] password for ullix: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 1.512 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/restricted bcmwl-kernel-source amd64 6.30.223.248+bdcom-0ubuntu0.1 [1.512 kB]
Fetched 1.512 kB in 1s (1.007 kB/s)              
(Reading database ... 355279 files and directories currently installed.)
Preparing to unpack .../bcmwl-kernel-source_6.30.223.248+bdcom-0ubuntu0.1_amd64.deb ...
Removing all DKMS Modules
Done.
Unpacking bcmwl-kernel-source (6.30.223.248+bdcom-0ubuntu0.1) over (6.30.223.248+bdcom-0ubuntu0.1) ...
Setting up bcmwl-kernel-source (6.30.223.248+bdcom-0ubuntu0.1) ...
Loading new bcmwl-6.30.223.248+bdcom DKMS files...
Building only for 4.1.0-040100rc4-generic
Building for architecture x86_64
Building initial module for 4.1.0-040100rc4-generic

ERROR (dkms apport): kernel package linux-headers-4.1.0-040100rc4-generic is not supported
Error! Bad return status for module build on kernel: 4.1.0-040100rc4-generic (x86_64)
Consult /var/lib/dkms/bcmwl/6.30.223.248+bdcom/build/make.log for more information.

modprobe: FATAL: Module wl not found.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.103ubuntu4.2) ...
update-initramfs: Generating /boot/initrd.img-4.1.0-040100rc4-generic


** Attachment added: "make.log"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1456585/+attachment/4400983/+files/make.log

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https://bugs.launchpad.net/bugs/1456585

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

Status in linux package in Ubuntu:
  Confirmed

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.
  --- 
  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.

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