XPS-15 (9550), Yakkety, 4.8.0-41-generic, 40Mhz channels also unable to connect to Wifi any longer. Happy to provide testing or any additional information.
dmesg | grep brcm [ 5.481593] usbcore: registered new interface driver brcmfmac [ 5.481639] brcmfmac 0000:02:00.0: enabling device (0000 -> 0002) [ 5.599437] brcmfmac 0000:02:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.txt failed with error -2 [ 6.112535] brcmf_c_preinit_dcmds: Firmware version = wl0: Nov 10 2015 06:38:10 version 7.35.177.61 (r598657) FWID 01-ea662a8c [ 6.167629] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 6.177287] brcmfmac 0000:02:00.0 wlp2s0: renamed from wlan0 [ 34.475342] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 38.568678] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 43.673001] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 242.690117] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 246.670201] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 248.314205] brcmf_cfg80211_escan: Connecting: status (3) [ 248.314223] brcmf_cfg80211_scan: scan error (-11) [ 251.619740] brcmf_inetaddr_changed: fail to get arp ip table err:-23 [ 251.675201] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 292.410333] brcmf_inetaddr_changed: fail to get arp ip table err:-23 [ 344.298222] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 396.312220] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 448.332129] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 482.471888] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 523.156863] brcmf_inetaddr_changed: fail to get arp ip table err:-23 [ 523.502468] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 527.549349] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) [ 531.589616] brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1630324 Title: Broadcom wifi dies in 60s cycles with 4.8 kernel Status in linux package in Ubuntu: Confirmed Status in linux package in Fedora: Unknown Bug description: 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'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1630324/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp