Public bug reported:
I have a Dell XPS 13 9350 with a Broadcom wifi adapter. Wifi connects
fine, but dies for around 5-10s (the signal dies completely, tools like
wavemon show "no interface data") in regular cycles of about 60s. dmesg
logs the same brcmfmac errors every minute or so: "brcmfmac:
brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30)".
network-manager's icon doesn't change however (remains as if the adapter
was connected).
This issue started to affect me when using kernel 4.8 on Ubuntu 16.04. I
previously used kernel 4.7 and did not experience this bug.
I booted the 16.10 daily build and experienced exactly the same errors.
$ lspci | grep BCM4350
3a:00.0 Network controller: Broadcom Limited BCM4350 802.11ac Wireless Network
Adapter (rev 08)
$ dmesg | grep brcm
[ 5.864558] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Oct 22
2015 06:16:26 version 7.35.180.119 (r594535) FWID 01-e791c176
[ 5.898803] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30
0x30)
[ 74.991987] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30
0x30)
[ 142.503220] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30
0x30)
...
$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.1.93-0ubuntu4
Uname: Linux 4.8.0-040800-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Oct 4 14:15:02 2016
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2016-05-26 (131 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IpRoute:
default via 192.168.0.1 dev wlp58s0 proto static metric 600
169.254.0.0/16 dev wlp58s0 scope link metric 1000
192.168.0.0/24 dev wlp58s0 proto kernel scope link src 192.168.0.29 metric
600
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
CONNECTION CON-UUID CON-PATH
wlp58s0 wifi connected /org/freedesktop/NetworkManager/Devices/0 Guava
Guest 1 68ae8dc2-ab23-42ef-9e41-ac8e9d91385a
/org/freedesktop/NetworkManager/ActiveConnection/0
lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 --
-- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2:
Error: Object 'nm' is unknown, try 'nmcli help'.
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Summary changed:
- wifi connection dies intermittently in 60s cycles
+ Broadcom wifi dies in 60s cycles with 4.8 kernel
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https://bugs.launchpad.net/bugs/1630324
Title:
Broadcom wifi dies in 60s cycles with 4.8 kernel
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