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[Bug 1415880] Re: 14e4:4365 bcmwl-kernel source: fix for null pointer crash

 

Hi again,

this took some time. I had to dig up a Windows 7 Rescue CD from
somewhere, change my BIOS settings to activate legacy support (otherwise
it would not boot), then start the BIOS update utility. Those were some
tense 30 seconds. Afterwards, it rebooted into Windows, which I exited,
rebooting again only to find out that either the Windows or the BIOS
update had somehow mangled my grub partitions. With a vivid USB stick, I
was able to make it boot again.

Long story short, the error reappeared promptly. So, now I'm on 8DCN40WW
(and we can probably remove the BIOS-outdated tag).

I'm going to do some more testing, perhaps upgrading to vivid.

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https://bugs.launchpad.net/bugs/1415880

Title:
  14e4:4365 bcmwl-kernel source: fix for null pointer crash

Status in bcmwl package in Ubuntu:
  Incomplete

Bug description:
  The bcmwl package as of now misses one patch for a bug that occurs
  with BCM43142 and possibly other broadcom chipsets that will look like
  random disconnects, poor wifi signal and kernel warnings, See also
  #1379524.

  Adding the patch is a fairly simple process:

  * put the patch file in /usr/src/bcmwl-6.30.223.248+bdcom/patches
  * add the following line to  /usr/src/bcmwl-6.30.223.248+bdcom/dkms.conf
  PATCH[7]="0014-null-pointer-crash.patch"
  * run: /usr/lib/dkms/common.postinst bcmwl 6.30.223.248+bdcom /usr/share/bcmwl x86_64 $(uname -r)

  This has fixed the issue for me. Edit: I just wanted to add that I did
  not write the patch; I merely downloaded it from a paste that was
  linked from the respective AUR package.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu1 [modified: usr/src/bcmwl-6.30.223.248+bdcom/dkms.conf]
  ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8.1
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Thu Jan 29 13:15:17 2015
  InstallationDate: Installed on 2015-01-26 (3 days ago)
  InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  SourcePackage: bcmwl
  UpgradeStatus: No upgrade log present (probably fresh install)

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References