networking - WiFi won't turn on 16.04 xiaomi Mi Air - Ask Ubuntu

when click on wifi toggle toggles on off. no wifi networks coming up.

sudo lshw -c network gives me:

 *-network disabled              description: wireless interface        product: wireless 8260        vendor: intel corporation        physical id: 0        bus info: pci@0000:02:00.0        logical name: wlp2s0        version: 3a        serial: 00:c2:c6:f1:83:49        width: 64 bits        clock: 33mhz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-31-generic firmware=16.242414.0 latency=0 link=no multicast=yes wireless=ieee 802.11abgn 

output wireless-info script:

########## wireless info start ##########  report from: 16 nov 2016 11:13 aedt +1100  booted last: 16 nov 2016 00:00 aedt +1100  script from: 08 jul 2016 02:16 utc +0000  ##### release ###########################  distributor id: ubuntu description:    ubuntu 16.04.1 lts release:    16.04 codename:   xenial  ##### kernel ############################  linux 4.4.0-31-generic #50-ubuntu smp wed jul 13 00:07:12 utc 2016 x86_64 x86_64 x86_64 gnu/linux  parameters: ro, quiet, splash, vt.handoff=7  ##### desktop ###########################  ubuntu  ##### lspci #############################  02:00.0 network controller [0280]: intel corporation wireless 8260 [8086:24f3] (rev 3a)     subsystem: intel corporation wireless 8260 [8086:9010]     kernel driver in use: iwlwifi  ##### lsusb #############################  bus 002 device 001: id 1d6b:0003 linux foundation 3.0 root hub bus 001 device 005: id 8087:0a2b intel corp.  bus 001 device 004: id 05c8:03a2 cheng uei precision industry co., ltd (foxlink)  bus 001 device 003: id 1a2c:0042 china resource semico co., ltd  bus 001 device 010: id 18d1:4ee1 google inc. nexus 4 / 10 bus 001 device 001: id 1d6b:0002 linux foundation 2.0 root hub  ##### pcmcia card info ##################  ##### rfkill ############################  0: phy0: wireless lan     soft blocked: no     hard blocked: no 1: acer-wireless: wireless lan     soft blocked: yes     hard blocked: no 3: hci0: bluetooth     soft blocked: yes     hard blocked: no  ##### lsmod #############################  dell_wmi_aio           16384  0 acer_wmi               20480  0 sparse_keymap          16384  2 dell_wmi_aio,acer_wmi iwlmvm                311296  0 mac80211              737280  1 iwlmvm iwlwifi               200704  1 iwlmvm cfg80211              565248  3 iwlwifi,mac80211,iwlmvm mxm_wmi                16384  1 nouveau video                  40960  3 i915_bpo,acer_wmi,nouveau wmi                    20480  4 dell_wmi_aio,acer_wmi,mxm_wmi,nouveau  ##### interfaces ########################  auto lo iface lo inet loopback  ##### ifconfig ##########################  wlp2s0    link encap:ethernet  hwaddr <mac 'wlp2s0' [if1]>             broadcast multicast  mtu:1500  metric:1           rx packets:0 errors:0 dropped:0 overruns:0 frame:0           tx packets:0 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            rx bytes:0 (0.0 b)  tx bytes:0 (0.0 b)  ##### iwconfig ##########################  lo        no wireless extensions.  wlp2s0    ieee 802.11abgn  essid:off/any             mode:managed  access point: not-associated   tx-power=0 dbm              retry short limit:7   rts thr:off   fragment thr:off           power management:on   ##### route #############################  kernel ip routing table destination     gateway         genmask         flags metric ref    use iface  ##### resolv.conf #######################  nameserver 127.0.1.1  ##### network managers ##################  installed:      networkmanager  running:  root      2531     1  0 00:34 ?        00:00:00 /usr/sbin/networkmanager --no-daemon  ##### networkmanager info ###############  general.device:                         wlp2s0 general.type:                           wifi general.nm-type:                        nmdevicewifi general.vendor:                         intel corporation general.product:                        wireless 8260 general.driver:                         iwlwifi general.driver-version:                 4.4.0-31-generic general.firmware-version:               16.242414.0 general.hwaddr:                         <mac 'wlp2s0' [if1]> general.mtu:                            1500 general.state:                          20 (unavailable) general.reason:                         0 (no reason given) general.udi:                            /sys/devices/pci0000:00/0000:00:1c.4/0000:02:00.0/net/wlp2s0 general.ip-iface:                        general.is-software:                    no general.nm-managed:                     yes general.autoconnect:                    yes general.firmware-missing:               no general.nm-plugin-missing:              no general.phys-port-id:                   -- general.connection:                     -- general.con-uuid:                       -- general.con-path:                       -- general.metered:                        unknown capabilities.carrier-detect:            no capabilities.speed:                     unknown capabilities.is-software:               no wifi-properties.wep:                    yes wifi-properties.wpa:                    yes wifi-properties.wpa2:                   yes wifi-properties.tkip:                   yes wifi-properties.ccmp:                   yes wifi-properties.ap:                     yes wifi-properties.adhoc:                  yes wifi-properties.2ghz:                   yes wifi-properties.5ghz:                   yes connections.available-connection-paths:   ssid  bssid  mode  chan  freq  rate  signal  bars  security  active  *   ##### networkmanager.state ##############  [main] networkingenabled=true wirelessenabled=true wwanenabled=true  ##### networkmanager.conf ###############  [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq  [ifupdown] managed=false  ##### networkmanager profiles ###########  ##### iw reg ########################  region: australia/sydney (based on set time zone)  country 00: dfs-unset     (2402 - 2472 @ 40), (n/a, 20), (n/a)     (2457 - 2482 @ 40), (n/a, 20), (n/a), no-ir     (2474 - 2494 @ 20), (n/a, 20), (n/a), no-ofdm, no-ir     (5170 - 5250 @ 80), (n/a, 20), (n/a), no-ir     (5250 - 5330 @ 80), (n/a, 20), (0 ms), dfs, no-ir     (5490 - 5730 @ 160), (n/a, 20), (0 ms), dfs, no-ir     (5735 - 5835 @ 80), (n/a, 20), (n/a), no-ir     (57240 - 63720 @ 2160), (n/a, 0), (n/a)  ##### iwlist channels ###################  lo        no frequency information.  wlp2s0    32 channels in total; available frequencies :           channel 01 : 2.412 ghz           channel 02 : 2.417 ghz           channel 03 : 2.422 ghz           channel 04 : 2.427 ghz           channel 05 : 2.432 ghz           channel 06 : 2.437 ghz           channel 07 : 2.442 ghz           channel 08 : 2.447 ghz           channel 09 : 2.452 ghz           channel 10 : 2.457 ghz           channel 11 : 2.462 ghz           channel 12 : 2.467 ghz           channel 13 : 2.472 ghz           channel 36 : 5.18 ghz           channel 40 : 5.2 ghz           channel 44 : 5.22 ghz           channel 48 : 5.24 ghz           channel 52 : 5.26 ghz           channel 56 : 5.28 ghz           channel 60 : 5.3 ghz           channel 64 : 5.32 ghz           channel 100 : 5.5 ghz           channel 104 : 5.52 ghz           channel 108 : 5.54 ghz           channel 112 : 5.56 ghz           channel 116 : 5.58 ghz           channel 120 : 5.6 ghz           channel 124 : 5.62 ghz           channel 128 : 5.64 ghz           channel 132 : 5.66 ghz           channel 136 : 5.68 ghz           channel 140 : 5.7 ghz  ##### iwlist scan #######################  lo        interface doesn't support scanning.  wlp2s0    interface doesn't support scanning : network down  ##### module infos ######################  [iwlmvm] filename:       /lib/modules/4.4.0-31-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko license:        gpl author:         copyright(c) 2003- 2015 intel corporation <ilw@linux.intel.com> description:    new intel(r) wireless agn driver linux srcversion:     49dc02934cb3d8c312ff8e1 depends:        iwlwifi,mac80211,cfg80211 intree:         y vermagic:       4.4.0-31-generic smp mod_unload modversions  parm:           init_dbg:set true debug assert in init fw (default: false (bool) parm:           power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int) parm:           tfd_q_hang_detect:tfd queues hang detection (default: true (bool)  [mac80211] filename:       /lib/modules/4.4.0-31-generic/kernel/net/mac80211/mac80211.ko license:        gpl description:    ieee 802.11 subsystem srcversion:     2ffaeed0245ca1d97fe1e44 depends:        cfg80211 intree:         y vermagic:       4.4.0-31-generic smp mod_unload modversions  parm:           minstrel_vht_only:use vht rates when vht supported sta. (bool) parm:           max_nullfunc_tries:maximum nullfunc tx tries before disconnecting (reason 4). (int) parm:           max_probe_tries:maximum probe tries before disconnecting (reason 4). (int) parm:           beacon_loss_count:number of beacon intervals before decide beacon lost. (int) parm:           probe_wait_ms:maximum time(ms) wait probe response before disconnecting (reason 4). (int) parm:           ieee80211_default_rc_algo:default rate control algorithm mac80211 use (charp)  [iwlwifi] filename:       /lib/modules/4.4.0-31-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko license:        gpl author:         copyright(c) 2003- 2015 intel corporation <ilw@linux.intel.com> description:    intel(r) wireless wifi driver linux firmware:       iwlwifi-100-5.ucode firmware:       iwlwifi-1000-5.ucode firmware:       iwlwifi-135-6.ucode firmware:       iwlwifi-105-6.ucode firmware:       iwlwifi-2030-6.ucode firmware:       iwlwifi-2000-6.ucode firmware:       iwlwifi-5150-2.ucode firmware:       iwlwifi-5000-5.ucode firmware:       iwlwifi-6000g2b-6.ucode firmware:       iwlwifi-6000g2a-5.ucode firmware:       iwlwifi-6050-5.ucode firmware:       iwlwifi-6000-4.ucode firmware:       iwlwifi-7265d-13.ucode firmware:       iwlwifi-7265-13.ucode firmware:       iwlwifi-3160-13.ucode firmware:       iwlwifi-7260-13.ucode firmware:       iwlwifi-8000-13.ucode srcversion:     651bf6cbf283f6f817b8f3a depends:        cfg80211 intree:         y vermagic:       4.4.0-31-generic smp mod_unload modversions  parm:           swcrypto:using crypto in software (default 0 [hardware]) (int) parm:           11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg tx, 4: disable agg rx, 8 enable agg tx (uint) parm:           amsdu_size_8k:enable 8k amsdu size (default 0) (int) parm:           fw_restart:restart firmware in case of error (default true) (bool) parm:           antenna_coupling:specify antenna coupling in db (default: 0 db) (int) parm:           nvm_file:nvm file name (charp) parm:           d0i3_disable:disable d0i3 functionality (default: y) (bool) parm:           lar_disable:disable lar functionality (default: n) (bool) parm:           uapsd_disable:disable u-apsd functionality (default: y) (bool) parm:           bt_coex_active:enable wifi/bt co-exist (default: enable) (bool) parm:           led_mode:0=system default, 1=on(rf on)/off(rf off), 2=blinking, 3=off (default: 0) (int) parm:           power_save:enable wifi power management (default: disable) (bool) parm:           power_level:default power save level (range 1 - 5, default: 1) (int) parm:           fw_monitor:firmware monitor - debug fw (default: false - needs lots of memory) (bool)  [cfg80211] filename:       /lib/modules/4.4.0-31-generic/kernel/net/wireless/cfg80211.ko description:    wireless configuration support license:        gpl author:         johannes berg srcversion:     25a45701aaa64dac1e47d9d depends:         intree:         y vermagic:       4.4.0-31-generic smp mod_unload modversions  parm:           ieee80211_regdom:ieee 802.11 regulatory domain code (charp) parm:           cfg80211_disable_40mhz_24ghz:disable 40mhz support in 2.4ghz band (bool)  ##### module parameters #################  [iwlmvm] init_dbg: n power_scheme: 2 tfd_q_hang_detect: y  [mac80211] beacon_loss_count: 7 ieee80211_default_rc_algo: minstrel_ht max_nullfunc_tries: 2 max_probe_tries: 5 minstrel_vht_only: y probe_wait_ms: 500  [iwlwifi] 11n_disable: 0 amsdu_size_8k: 0 antenna_coupling: 0 bt_coex_active: y d0i3_disable: y fw_monitor: n fw_restart: y lar_disable: n led_mode: 0 nvm_file: (null) power_level: 0 power_save: n swcrypto: 0 uapsd_disable: y  [cfg80211] cfg80211_disable_40mhz_24ghz: n ieee80211_regdom: 00  ##### /etc/modules ######################  ##### modprobe options ##################  [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci  [/etc/modprobe.d/blacklist.conf] blacklist evbug blacklist usbmouse blacklist usbkbd blacklist eepro100 blacklist de4x5 blacklist eth1394 blacklist snd_intel8x0m blacklist snd_aw2 blacklist i2c_i801 blacklist prism54 blacklist bcm43xx blacklist garmin_gps blacklist asus_acpi blacklist snd_pcsp blacklist pcspkr blacklist amd76x_edac  [/etc/modprobe.d/blacklist-rare-network.conf] alias net-pf-3 off alias net-pf-6 off alias net-pf-9 off alias net-pf-11 off alias net-pf-12 off alias net-pf-19 off alias net-pf-21 off alias net-pf-36 off  [/etc/modprobe.d/iwlwifi.conf] remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211  [/etc/modprobe.d/mlx4.conf] softdep mlx4_core post: mlx4_en  ##### rc.local ##########################  exit 0  ##### pm-utils ##########################  ##### udev rules ########################  ##### dmesg #############################  [ 3094.695018] bluetooth: hci0: minimum firmware build 1 week 10 2014 [ 3094.695022] bluetooth: hci0: found device firmware: intel/ibt-11-5.sfi [ 3094.723609] ipv6: addrconf(netdev_up): wlp2s0: link not ready [ 3096.155939] bluetooth: hci0: waiting firmware download complete [ 3104.904881] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3105.115643] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times) [ 3130.142214] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3130.356813] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times) [ 3152.294087] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3152.508276] ipv6: addrconf(netdev_up): wlp2s0: link not ready [ 3154.612555] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3154.825901] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times) [ 3158.092907] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3158.303494] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times) [ 3191.730743] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3191.941920] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times) [ 3469.670647] iwlwifi 0000:02:00.0: l1 enabled - ltr enabled (repeated 4 times) [ 3469.883616] ipv6: addrconf(netdev_up): wlp2s0: link not ready (repeated 2 times)  ########## wireless info end ############ 

dell_wmi_aio 16384 0 acer_wmi 20480 0 sparse_keymap 16384 2 dell_wmi_aio,acer_wmi iwlmvm
311296 0 mac80211 737280 1 iwlmvm iwlwifi
200704 1 iwlmvm cfg80211 565248 3 iwlwifi,mac80211,iwlmvm mxm_wmi 16384 1 nouveau video 40960 3 i915_bpo,acer_wmi,nouveau wmi 20480 4 dell_wmi_aio,acer_wmi,mxm_wmi,nouveau

your xiaomi mi air either dell oem or acer; not both. may have experiment bit. terminal:

sudo -i echo "blacklist acer-wmi"  >>  /etc/modprobe.d/blacklist.conf exit 

reboot , try again:

rfkill list 

we hope wireless working.