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[Bug 1189611] Re: bcmwl-kernel-source 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz networks and is unstable on 2.5GHz

 

Hello,
I'm able to compile old driver 
bcmwl-6.20.155.1+bdcom
with
patches for 3.10 kernel (bcmwl-6.30.223.30+bdcom)

Required changes are:
0008-add-support-for-linux-3.9.0.patch : replace wl_cfg80211_hybrid.c with wl_cfg80211.c  
0009-add-support-for-linux-3.10.0.patch
Add in dkms.conf:
PATCH[7]="0008-add-support-for-linux-3.9.0.patch"
PATCH[8]="0009-add-support-for-linux-3.10.0.patch"
And rebuild module with dkms:
https://help.ubuntu.com/community/DKMS

Could you test if the problem with BCM4331 connection gone with old
bcmwl driver and 3.10 kernel?

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https://bugs.launchpad.net/bugs/1189611

Title:
  bcmwl-kernel-source 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz
  networks and is unstable on 2.5GHz

Status in “bcmwl” package in Ubuntu:
  Confirmed

Bug description:
  Hardware: Broadcom Corporation BCM4331 802.11a/b/g/n (rev 02)

  This chip is working perfectly fine on 2.5GHz and 5GHz using version
  6.20.155.1+bdcom-0ubuntu6 of the driver.

  After upgrading to saucy and installing version 6.30.223.30+bdcom-
  0ubuntu1 it fails to find any 5GHz networks and connections on 2.5GHz
  are unstable.

  Downgrading the saucy machine to kernel 3.8.x and bcmwl-kernel-source
  6.20.155.1+bdcom-0ubuntu6 (both from raring) makes the chip work
  again.

  Downgrading just the kernel to 3.8 and keeping bcmwl-kernel-source at
  version 6.30.223.30+bdcom-0ubuntu1 does NOT fix the issue.

  Looking at the changelog its most likely caused by the update to the
  new upstream release.

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