Krister, as this bug is reproducible while using the proprietary bcmwl driver, this wouldn't be a bug to pursue in linux (Ubuntu).
Hence, could you please provide the missing information 4. through 8. from https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Broadcom_STA_Wireless_driver ? ** Package changed: linux (Ubuntu) => bcmwl (Ubuntu) ** Summary changed: - wireless unable to connect after tainted kworker + 14e4:43a0 [MacBookAir6,2] wireless unable to connect after tainted kworker -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bcmwl in Ubuntu. https://bugs.launchpad.net/bugs/1402409 Title: 14e4:43a0 [MacBookAir6,2] wireless unable to connect after tainted kworker Status in bcmwl package in Ubuntu: Incomplete Bug description: At some point sooner or later in any session the wireless is no longer able to connect to the network. I've included at the end the output of dmesg. I'm not sure if this is a bug in the kernel or in a module. This is my card: 03:00.0 Network controller: Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter (rev 03) Features of this bug: - reloading the wl and cfg80211 modules does not fix the problem. - when this happens I can not use my USB netgear WG111v2 (which works before it happens). - other machines on the same network stay connected no problem, including a different machine with a broadcom chip (BCM5906M Fast Ethernet PCI Express (rev 02)). I'm sorry that I can't give more information... please let me know if I can. [ 5091.442404] ERROR @wl_inform_single_bss : cfg80211_inform_bss_frame error [ 5091.449431] cfg80211: Calling CRDA to update world regulatory domain [ 5091.471386] cfg80211: World regulatory domain updated: [ 5091.471390] cfg80211: DFS Master region: unset [ 5091.471392] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [ 5091.471395] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [ 5091.471397] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [ 5091.471399] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A) [ 5091.471400] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [ 5091.471402] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A) [ 5091.534260] ------------[ cut here ]------------ [ 5091.534296] WARNING: CPU: 3 PID: 8088 at /build/buildd/linux-3.16.0/net/wireless/sme.c:655 __cfg80211_connect_result+0x3f1/0x470 [cfg80211]() [ 5091.534299] Modules linked in: btusb rfcomm bnep bluetooth 6lowpan_iphc snd_hda_codec_cirrus snd_hda_codec_generic snd_hda_codec_hdmi binfmt_misc nls_iso8859_1 wl(POE) applesmc input_polldev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel bcm5974 kvm joydev crct10dif_pclmul snd_hda_intel snd_hda_controller crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_seq_midi snd_pcm snd_seq_midi_event snd_rawmidi nls_utf8 hfsplus aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 lpc_ich snd_seq snd_seq_device i915 snd_timer snd drm_kms_helper mei_me mei drm shpchp i2c_algo_bit soundcore sbs sbshc spi_pxa2xx_platform apple_bl mac_hid parport_pc ppdev mba6x_bl(OE) video lp parport hid_generic hid_apple usbhid hid uas ahci usb_storage libahci [ 5091.534362] CPU: 3 PID: 8088 Comm: kworker/u16:0 Tainted: P OE 3.16.0-28-generic #37-Ubuntu [ 5091.534365] Hardware name: Apple Inc. MacBookAir6,2/Mac-7DF21CB3ED6977E5, BIOS MBA61.88Z.0099.B04.1309271229 09/27/2013 [ 5091.534375] Workqueue: cfg80211 cfg80211_event_work [cfg80211] [ 5091.534378] 0000000000000009 ffff88021fde3c90 ffffffff82781e6a 0000000000000000 [ 5091.534382] ffff88021fde3cc8 ffffffff8206fedd ffff880262a13400 0000000000000000 [ 5091.534386] 0000000000000000 ffff8800867ec000 ffff88023075f618 ffff88021fde3cd8 [ 5091.534391] Call Trace: [ 5091.534399] [<ffffffff82781e6a>] dump_stack+0x45/0x56 [ 5091.534405] [<ffffffff8206fedd>] warn_slowpath_common+0x7d/0xa0 [ 5091.534410] [<ffffffff8206ffba>] warn_slowpath_null+0x1a/0x20 [ 5091.534425] [<ffffffffc0572681>] __cfg80211_connect_result+0x3f1/0x470 [cfg80211] [ 5091.534430] [<ffffffff8201c929>] ? sched_clock+0x9/0x10 [ 5091.534443] [<ffffffffc054f023>] cfg80211_process_wdev_events+0x153/0x1e0 [cfg80211] [ 5091.534455] [<ffffffffc054f0e8>] cfg80211_process_rdev_events+0x38/0x70 [cfg80211] [ 5091.534465] [<ffffffffc054a01e>] cfg80211_event_work+0x1e/0x30 [cfg80211] [ 5091.534470] [<ffffffff8208da32>] process_one_work+0x182/0x4e0 [ 5091.534474] [<ffffffff8208ddfb>] worker_thread+0x6b/0x6a0 [ 5091.534478] [<ffffffff8208dd90>] ? process_one_work+0x4e0/0x4e0 [ 5091.534482] [<ffffffff82094c6b>] kthread+0xdb/0x100 [ 5091.534487] [<ffffffff82094b90>] ? kthread_create_on_node+0x1c0/0x1c0 [ 5091.534500] [<ffffffff82789dfc>] ret_from_fork+0x7c/0xb0 [ 5091.534503] [<ffffffff82094b90>] ? kthread_create_on_node+0x1c0/0x1c0 [ 5091.534504] ---[ end trace de6b04f32a5c6efc ]--- [ 5096.267790] ERROR @wl_inform_single_bss : cfg80211_inform_bss_frame error ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-generic 3.16.0.28.29 ProcVersionSignature: Ubuntu 3.16.0-28.37-generic 3.16.7-ckt1 Uname: Linux 3.16.0-28-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: kms 1915 F.... pulseaudio /dev/snd/controlC0: kms 1915 F.... pulseaudio CurrentDesktop: Unity Date: Sun Dec 14 14:08:08 2014 HibernationDevice: RESUME=UUID=9e7b2d0e-6a44-4ad7-9725-f9a3f5f39c33 InstallationDate: Installed on 2013-10-25 (414 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64+mac (20131016.1) MachineType: Apple Inc. MacBookAir6,2 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic root=UUID=079cbe6b-6488-4e57-85d3-c3e3e2fcbe40 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-28-generic N/A linux-backports-modules-3.16.0-28-generic N/A linux-firmware 1.138 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/27/2013 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBA61.88Z.0099.B04.1309271229 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-7DF21CB3ED6977E5 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookAir6,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-7DF21CB3ED6977E5 dmi.modalias: dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B04.1309271229:bd09/27/2013:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:ct10:cvrMac-7DF21CB3ED6977E5: dmi.product.name: MacBookAir6,2 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1402409/+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
