Jul 14 18:35:13 yogakai avahi-daemon[691]: Withdrawing workstation service for wlan0.
Jul 14 18:35:13 yogakai NetworkManager[689]: <info> (wlan0): device state change: unavailable -> unmanaged (reason 'removed') [20 10 36]
Jul 14 18:35:13 yogakai systemd[1]: Stopping ifup for wlan0...
Jul 14 18:35:13 yogakai ifdown[2056]: /sbin/ifdown: interface wlan0 not configured
Jul 14 18:35:13 yogakai systemd[1]: Stopped ifup for wlan0.
Jul 14 18:35:13 yogakai NetworkManager[689]: <info> devices removed (path: /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/wlan0, iface: wlan0)
Jul 14 18:35:13 yogakai NetworkManager[689]: <info> radio killswitch /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/ieee80211/phy0/rfkill3 disappeared
Jul 14 18:35:13 yogakai systemd[1]: Stopping Load/Save RF Kill Switch Status of rfkill3...
Jul 14 18:35:13 yogakai systemd[1]: Stopped Load/Save RF Kill Switch Status of rfkill3.
Jul 14 18:35:31 yogakai org.kubuntu.DriverManager[1355]: DriverManager_DBus::devices START
Jul 14 18:35:31 yogakai org.kubuntu.DriverManager[1355]: DriverManager_DBus::devices END
Jul 14 18:35:36 yogakai kernel: [  225.902608] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
Jul 14 18:35:36 yogakai kernel: [  225.904181] ieee80211 phy1: Selected rate control algorithm 'rtl_rc'
Jul 14 18:35:36 yogakai kernel: [  225.905261] rtlwifi: rtlwifi: wireless switch is on
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> rfkill4: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/ieee80211/phy1/rfkill4) (driver rtl8723be)
Jul 14 18:35:36 yogakai systemd[1]: Starting Load/Save RF Kill Switch Status of rfkill4...
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> devices added (path: /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/wlan0, iface: wlan0)
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> device added (path: /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/wlan0, iface: wlan0): no ifupdown configuration found.
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): using nl80211 for WiFi device control
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): driver supports Access Point (AP) mode
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): new 802.11 WiFi device (driver: 'rtl8723be' ifindex: 4)
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/3
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jul 14 18:35:36 yogakai NetworkManager[689]: <info> (wlan0): preparing device
Jul 14 18:35:36 yogakai systemd[1]: Started Load/Save RF Kill Switch Status of rfkill4.
Jul 14 18:35:36 yogakai systemd[1]: Started ifup for wlan0.
Jul 14 18:35:36 yogakai systemd[1]: Starting ifup for wlan0...
Jul 14 18:35:36 yogakai sh[2101]: Unknown interface wlan0
Jul 14 18:38:17 yogakai NetworkManager[689]: <info> WiFi hardware radio set enabled
Jul 14 18:38:17 yogakai kernel: [  387.420759] BUG: unable to handle kernel paging request at ffffffffc09c4be0
Jul 14 18:38:17 yogakai kernel: [  387.420784] IP: [<ffffffffc098eb13>] halbtc_get_rfreg+0x23/0x30 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.420807] PGD 1c16067 PUD 1c18067 PMD 251880067 PTE 0
Jul 14 18:38:17 yogakai kernel: [  387.420824] Oops: 0000 [#1] SMP 
Jul 14 18:38:17 yogakai kernel: [  387.420835] Modules linked in: rtl8723be ctr ccm msr rfcomm bnep nls_iso8859_1 ax88179_178a usbnet mii rtsx_usb_ms memstick hid_sensor_als hid_sensor_rotation hid_sensor_incl_3d hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_accel_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf industrialio hid_sensor_iio_common hid_sensor_hub intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd arc4 uvcvideo videobuf2_vmalloc videobuf2_memops joydev videobuf2_core serio_raw v4l2_common videodev hid_multitouch snd_hda_codec_hdmi media btusb btcoexist bluetooth snd_hda_codec_realtek rtl8723_common snd_soc_rt5640 rtl_pci snd_hda_codec_generic rtlwifi snd_soc_rl6231 mac80211 snd_soc_core snd_hda_intel snd_hda_controller snd_compress snd_pcm_dmaengine snd_hda_codec cfg80211 snd_seq_midi snd_hwdep snd_seq_midi_event lpc_ich shpchp snd_rawmidi snd_pcm snd_seq mei_me mei snd_seq_device ideapad_laptop snd_timer sparse_keymap snd dw_dmac i2c_hid dw_dmac_core soundcore snd_soc_sst_acpi 8250_dw i2c_designware_platform soc_button_array i2c_designware_core spi_pxa2xx_platform mac_hid parport_pc ppdev lp parport autofs4 usbhid hid rtsx_usb_sdmmc rtsx_usb i915 sdhci_acpi video i2c_algo_bit sdhci drm_kms_helper ahci psmouse drm libahci [last unloaded: rtl8723be]
Jul 14 18:38:17 yogakai kernel: [  387.421227] CPU: 2 PID: 689 Comm: NetworkManager Not tainted 3.19.0-22-generic #22-Ubuntu
Jul 14 18:38:17 yogakai kernel: [  387.421249] Hardware name: LENOVO 20344/INVALID, BIOS 96CN29WW(V1.15) 10/16/2014
Jul 14 18:38:17 yogakai kernel: [  387.421269] task: ffff88009b725850 ti: ffff880253c58000 task.ti: ffff880253c58000
Jul 14 18:38:17 yogakai kernel: [  387.421289] RIP: 0010:[<ffffffffc098eb13>]  [<ffffffffc098eb13>] halbtc_get_rfreg+0x23/0x30 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.421317] RSP: 0018:ffff880253c5b4e8  EFLAGS: 00010246
Jul 14 18:38:17 yogakai kernel: [  387.421331] RAX: ffffffffc09c4bc0 RBX: ffffffffc0993480 RCX: 00000000000fffff
Jul 14 18:38:17 yogakai kernel: [  387.421350] RDX: 000000000000001e RSI: 0000000000000000 RDI: ffff880098440680
Jul 14 18:38:17 yogakai kernel: [  387.421369] RBP: ffff880253c5b4e8 R08: 0000000000000001 R09: 0000000000000001
Jul 14 18:38:17 yogakai kernel: [  387.421390] R10: 0000000000000097 R11: 0000000000000000 R12: ffff88023a000680
Jul 14 18:38:17 yogakai kernel: [  387.421409] R13: 0000000000000292 R14: ffff88023a001ac0 R15: 0000000000000000
Jul 14 18:38:17 yogakai kernel: [  387.421428] FS:  00007fcc8d1328c0(0000) GS:ffff88025f280000(0000) knlGS:0000000000000000
Jul 14 18:38:17 yogakai kernel: [  387.421449] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 14 18:38:17 yogakai kernel: [  387.421464] CR2: ffffffffc09c4be0 CR3: 0000000253cd5000 CR4: 00000000001407e0
Jul 14 18:38:17 yogakai kernel: [  387.421483] Stack:
Jul 14 18:38:17 yogakai kernel: [  387.421489]  ffff880253c5b508 ffffffffc098d963 ffffffff813c35fb ffff88023a001ac0
Jul 14 18:38:17 yogakai kernel: [  387.421511]  ffff880253c5b518 ffffffffc098f199 ffff880253c5b528 ffffffffc098f795
Jul 14 18:38:17 yogakai kernel: [  387.421532]  ffff880253c5b548 ffffffffc0b0be64 ffff88023a001ac0 ffff88023a001ac0
Jul 14 18:38:17 yogakai kernel: [  387.421553] Call Trace:
Jul 14 18:38:17 yogakai kernel: [  387.421564]  [<ffffffffc098d963>] ex_btc8723b2ant_init_hwconfig+0x33/0xe0 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.421588]  [<ffffffff813c35fb>] ? delay_tsc+0x3b/0x80
Jul 14 18:38:17 yogakai kernel: [  387.421605]  [<ffffffffc098f199>] exhalbtc_init_hw_config+0x39/0x40 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.421626]  [<ffffffffc098f795>] rtl_btc_init_hw_config+0x15/0x30 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.421648]  [<ffffffffc0b0be64>] rtl8723be_bt_hw_init+0x34/0x40 [rtl8723be]
Jul 14 18:38:17 yogakai kernel: [  387.421668]  [<ffffffffc0b0c58f>] rtl8723be_hw_init+0x71f/0xc30 [rtl8723be]
Jul 14 18:38:17 yogakai kernel: [  387.421689]  [<ffffffffc08a5b71>] rtl_pci_start+0x51/0xc0 [rtl_pci]
Jul 14 18:38:17 yogakai kernel: [  387.421709]  [<ffffffff817c8d66>] ? mutex_lock+0x16/0x40
Jul 14 18:38:17 yogakai kernel: [  387.421727]  [<ffffffffc087ae4c>] rtl_op_start+0x5c/0x90 [rtlwifi]
Jul 14 18:38:17 yogakai kernel: [  387.421754]  [<ffffffffc07a6cb4>] ieee80211_do_open+0x324/0xde0 [mac80211]
Jul 14 18:38:17 yogakai kernel: [  387.421781]  [<ffffffffc07a77e1>] ieee80211_open+0x71/0x80 [mac80211]
Jul 14 18:38:17 yogakai kernel: [  387.421799]  [<ffffffff816c3396>] __dev_open+0xb6/0x130
Jul 14 18:38:17 yogakai kernel: [  387.421815]  [<ffffffff816c36c1>] __dev_change_flags+0xa1/0x170
Jul 14 18:38:17 yogakai kernel: [  387.421831]  [<ffffffff816c37b9>] dev_change_flags+0x29/0x70
Jul 14 18:38:17 yogakai kernel: [  387.421848]  [<ffffffff816d2f27>] do_setlink+0x3a7/0xb80
Jul 14 18:38:17 yogakai kernel: [  387.421864]  [<ffffffff810dd3a0>] ? internal_add_timer+0x80/0x80
Jul 14 18:38:17 yogakai kernel: [  387.421882]  [<ffffffff810b7319>] ? finish_wait+0x59/0x70
Jul 14 18:38:17 yogakai kernel: [  387.421898]  [<ffffffff8144ba9d>] ? acpi_ec_transaction_unlocked+0x2be/0x2d0
Jul 14 18:38:17 yogakai kernel: [  387.421920]  [<ffffffff813e0f22>] ? nla_parse+0x32/0x120
Jul 14 18:38:17 yogakai kernel: [  387.421935]  [<ffffffff816d3e3d>] rtnl_newlink+0x5fd/0x7a0
Jul 14 18:38:17 yogakai kernel: [  387.421952]  [<ffffffff813142f8>] ? security_capable+0x18/0x20
Jul 14 18:38:17 yogakai kernel: [  387.421970]  [<ffffffff8107f69d>] ? ns_capable+0x2d/0x60
Jul 14 18:38:17 yogakai kernel: [  387.421985]  [<ffffffff816cffa2>] rtnetlink_rcv_msg+0x92/0x260
Jul 14 18:38:17 yogakai kernel: [  387.422003]  [<ffffffff813cb576>] ? rhashtable_lookup_compare+0x36/0x70
Jul 14 18:38:17 yogakai kernel: [  387.422022]  [<ffffffff816ed53e>] ? __netlink_lookup+0x3e/0x50
Jul 14 18:38:17 yogakai kernel: [  387.422038]  [<ffffffff816cff10>] ? rtnetlink_rcv+0x40/0x40
Jul 14 18:38:17 yogakai kernel: [  387.422055]  [<ffffffff816f1449>] netlink_rcv_skb+0xb9/0xe0
Jul 14 18:38:17 yogakai kernel: [  387.422070]  [<ffffffff816cfefc>] rtnetlink_rcv+0x2c/0x40
Jul 14 18:38:17 yogakai kernel: [  387.422085]  [<ffffffff816f0b81>] netlink_unicast+0x111/0x1b0
Jul 14 18:38:17 yogakai kernel: [  387.422102]  [<ffffffff816f0f20>] netlink_sendmsg+0x300/0x650
Jul 14 18:38:17 yogakai kernel: [  387.422118]  [<ffffffff81360390>] ? aa_sk_perm.isra.4+0x70/0x170
Jul 14 18:38:17 yogakai kernel: [  387.422136]  [<ffffffff816a53ec>] do_sock_sendmsg+0x8c/0x100
Jul 14 18:38:17 yogakai kernel: [  387.422152]  [<ffffffff816a4d8c>] ? copy_msghdr_from_user+0x15c/0x210
Jul 14 18:38:17 yogakai kernel: [  387.422170]  [<ffffffff816a5a48>] ___sys_sendmsg+0x348/0x360
Jul 14 18:38:17 yogakai kernel: [  387.422186]  [<ffffffff810b6e65>] ? __wake_up_common+0x55/0x90
Jul 14 18:38:17 yogakai kernel: [  387.422204]  [<ffffffff81213465>] ? __fget_light+0x25/0x70
Jul 14 18:38:17 yogakai kernel: [  387.422219]  [<ffffffff812134c3>] ? __fdget+0x13/0x20
Jul 14 18:38:17 yogakai kernel: [  387.422234]  [<ffffffff8120cbda>] ? dput+0x2a/0x1c0
Jul 14 18:38:17 yogakai kernel: [  387.423259]  [<ffffffff81216134>] ? mntput+0x24/0x40
Jul 14 18:38:17 yogakai kernel: [  387.424294]  [<ffffffff816a6162>] __sys_sendmsg+0x42/0x80
Jul 14 18:38:17 yogakai kernel: [  387.425298]  [<ffffffff816a61b2>] SyS_sendmsg+0x12/0x20
Jul 14 18:38:17 yogakai kernel: [  387.426293]  [<ffffffff817cb24d>] system_call_fastpath+0x16/0x1b
Jul 14 18:38:17 yogakai kernel: [  387.427288] Code: 90 78 01 00 00 5d c3 90 0f 1f 44 00 00 55 48 8b 47 08 40 0f b6 f6 48 89 e5 48 8b b8 48 06 00 00 48 8b 47 48 48 8b 80 b8 a9 00 00 <48> 8b 40 20 ff 90 70 01 00 00 5d c3 90 0f 1f 44 00 00 55 48 8b 
Jul 14 18:38:17 yogakai kernel: [  387.428366] RIP  [<ffffffffc098eb13>] halbtc_get_rfreg+0x23/0x30 [btcoexist]
Jul 14 18:38:17 yogakai kernel: [  387.429351]  RSP <ffff880253c5b4e8>
Jul 14 18:38:17 yogakai kernel: [  387.430292] CR2: ffffffffc09c4be0
Jul 14 18:38:17 yogakai kernel: [  387.438087] ---[ end trace 18d38dcd00066604 ]---