我刚刚买了一台带有英特尔无线 3160AC 模块的东芝 l50-b-1q0。
我安装了 ubuntu 12.04（我听说 14 natty 更糟糕），并尝试了不同的内核：3.12rc4、3.11、3.13.2、3.17。但我总是遇到同样的问题。wifi 连接要么很慢，要么一直断开连接，结果是无法使用。我也尝试过使用来自反向移植版本 3.16.1 和 3.13.2-1 的 iwlwifi。总是同样的问题。我还尝试过使用内核 3.11、3.13.2、3.12rc4 的固件 iwlwifi-3160-ucode-9、iwlwifi-3160-ucode-8、iwlwifi-3160-ucode-7。没有运气。我也尝试过切换到 wicd 而不是网络管理器，但问题仍然一样。
目前我不知道该怎么办，这非常令人沮丧。我不得不说，我有一个全新的 hp 15-n234sl，带有 Realtek 8188ee 无线模块，也遇到了类似的问题。我以为问题出在 Realtek 芯片上，所以我把它换成了东芝，因为它有英特尔无线模块，应该会更好。我开始认为 Ubuntu 的新无线模块存在问题，但没人知道或理解它。
如果您有任何建议，请帮助我。
目前modinfo iwlwifi回报：
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003- 2014 Intel Corporation <[email protected]>
version: in-tree:
description: Intel(R) Wireless WiFi driver for 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-7265-9.ucode
firmware: iwlwifi-3165-9.ucode
firmware: iwlwifi-3160-9.ucode
firmware: iwlwifi-7260-9.ucode
firmware: iwlwifi-8000-8.ucode
srcversion: 9D3A59AA6FB332EEE13056A
alias: pci:v00008086d000024F4sv*sd00000030bc*sc*i*
alias: pci:v00008086d000024F3sv*sd00000010bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005490bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005290bc*sc*i*
...
alias: pci:v00008086d00004232sv*sd00001201bc*sc*i*
depends: cfg80211
intree: Y
vermagic: 3.17.0-031700rc7-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 (defualt: 0 dB) (int)
parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
parm: nvm_file:NVM file name (charp)
parm: uapsd_disable:disable U-APSD functionality (default: N) (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 from 1 - 5, default: 1) (int)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
我也尝试了你可以在网上找到的 wireless_script，所以这是结果 wireless-info.txt
======== Wireless-Info START ========
System-Info ~~~~~~~~~~~~~~~~~~~~~~~~
andrea-SATELLITE-L50-B 3.17.0-031700rc7-generic x86_64, Ubuntu 12.04.4 LTS, precise
CPU : Intel(R) Core(TM) i7-4510U CPU @ 2.00GHz
Memory : 11936 MB
Uptime : 14:00:06 up 30 min, 4 users, load average: 0.12, 0.17, 0.13
lspci ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
07:00.0 Network controller [0280]: Intel Corporation Wireless 3160 [8086:08b3] (rev 83)
Subsystem: Intel Corporation Dual Band Wireless AC 3160 [8086:8170]
Kernel driver in use: iwlwifi
08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
Subsystem: Toshiba America Info Systems Device [1179:f920]
Kernel driver in use: r8169
lsusb ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 002: ID 0b05:17ab ASUSTek Computer, Inc.
Bus 002 Device 003: ID 8087:07dc Intel Corp.
Bus 002 Device 004: ID 04f2:b446 Chicony Electronics Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
PCMCIA Card Info ~~~~~~~~~~~~~~~~~~~
iwconfig ~~~~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 IEEE 802.11abgn ESSID:"Default"
Mode:Managed Frequency:2.437 GHz Access Point: <MAC C-01 Default>
Bit Rate=1 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=26/70 Signal level=-84 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:111 Invalid misc:8703 Missed beacon:0
rfkill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interface Soft blocked Hard blocked
0: hci0: Bluetooth no no
1: phy0: Wireless LAN no no
lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
snd_soc_rt5640 93123 0
snd_soc_core 207547 1 snd_soc_rt5640
snd_soc_rl6231 13037 1 snd_soc_rt5640
snd_pcm 105052 7 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_controller,snd_hda_codec,snd_soc_rt5640,snd_soc_core,snd_pcm_dmaengine
iwlmvm 249097 0
mac80211 696913 1 iwlmvm
iwlwifi 190863 1 iwlmvm
cfg80211 514757 3 iwlmvm,mac80211,iwlwifi
wmi 19379 1 toshiba_acpi
module parameters ~~~~~~~~~~~~~~~~~~
cfg80211 (2):
iwlmvm (2):
iwlwifi (13):
mac80211 (5):
snd_pcm (2):
wmi (2):
nm-tool ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
State: connected (global)
==================o=============o=========o=============o=========o===========o==============o===========
Interface & ID | Type | Driver | State | Default | Speed | Support | HW Addr
==================o=============o=========o=============o=========o===========o==============o===========
eth0 | Wired | r8169 | unavailable | no | | | <MAC eth0>
------------------+-------------+---------+-------------+---------+-----------+--------------+-----------
wlan0 [Default] | 802.11 WiFi | iwlwifi | connected | yes | 1 Mb/s | WEP/WPA/WPA2 | <MAC wlan0>
*Default: Infra, <MAC C-01 Default>, Freq 2437 MHz, Rate 54 Mb/s, Strength 36 WPA
Address: 192.168.1.5
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
------------------+-------------+---------+-------------+---------+-----------+--------------+-----------
NetworkManager.state ~~~~~~~~~~~~~~~
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
NetworkManager.conf ~~~~~~~~~~~~~~~~
[main]
plugins=ifupdown,keyfile
dns=dnsmasq
[ifupdown]
managed=false
NM WiFi Profiles ~~~~~~~~~~~~~~~~~~~
Default : ssid=Default | mac-address=<MAC wlan0> | ipv4=auto | ipv6=auto
Default 1 : ssid=Default | mac-address=<MAC wlan1> | ipv4=auto | ipv6=auto
interfaces ~~~~~~~~~~~~~~~~~~~~~~~~~
auto lo
iface lo inet loopback
resolv.conf ~~~~~~~~~~~~~~~~~~~~~~~~
nameserver 127.0.0.1
Routes & Ping ~~~~~~~~~~~~~~~~~~~~~~
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
192.168.1.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
--- 192.168.1.1 ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2009ms
rtt min/avg/max/mdev = 8.531/25.658/42.785/17.127 ms
iw reg get ~~~~~~~~~~~~~~~~~~~~~~~~~
(Region : "en_US.UTF-8")
country 00:
(2402 - 2472 @ 40), (3, 20)
(2457 - 2482 @ 20), (3, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (3, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
iwlist chan ~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 32 channels in total; available frequencies :
Channel 01 (2.412 GHz) - 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)
Current Frequency:2.437 GHz (Channel 6)
iwlist scan ~~~~~~~~~~~~~~~~~~~~~~~~
wlan0 Scan completed :
Cell 01 - Address: <MAC C-01 Default>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=24/70 Signal level=-86 dBm
Encryption key:on
ESSID:"Default"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000001704620565
Extra: Last beacon: 64ms ago
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
blacklist ~~~~~~~~~~~~~~~~~~~~~~~~~~
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist rtl8192cu
modinfo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[snd_soc_rt5640]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/sound/soc/codecs/snd-soc-rt5640.ko
srcversion: CB68778F54B557A429DD977
depends: snd-pcm,snd-soc-core,snd-soc-rl6231
[snd_soc_core]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/sound/soc/snd-soc-core.ko
srcversion: F61EC7151C3E99E2FD7908E
depends: snd-pcm,snd-pcm-dmaengine,snd,snd-compress
parm: pmdown_time:DAPM stream powerdown time (msecs) (int)
[snd_soc_rl6231]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/sound/soc/codecs/snd-soc-rl6231.ko
srcversion: 72E2ED5916DFB5D4813CF01
depends:
[snd_pcm]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/sound/core/snd-pcm.ko
srcversion: DFD3D904BAB36EBAEBF16D1
depends: snd,snd-timer
parm: preallocate_dma:Preallocate DMA memory when the PCM devices are initialized. (int)
parm: maximum_substreams:Maximum substreams with preallocated DMA memory. (int)
[iwlmvm]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko
version: in-tree:
srcversion: FDB8EF7B15064AB7B96EDF7
depends: iwlwifi,mac80211,cfg80211
parm: init_dbg:set to true to debug an ASSERT in INIT fw (default: false (bool)
parm: power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int)
[mac80211]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/net/mac80211/mac80211.ko
srcversion: 50BFD5A22F2717F72E28E1A
depends: cfg80211
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 we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[iwlwifi]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
version: in-tree:
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-7265-9.ucode
firmware: iwlwifi-3165-9.ucode
firmware: iwlwifi-3160-9.ucode
firmware: iwlwifi-7260-9.ucode
firmware: iwlwifi-8000-8.ucode
srcversion: 9D3A59AA6FB332EEE13056A
depends: cfg80211
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 (defualt: 0 dB) (int)
parm: wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
parm: nvm_file:NVM file name (charp)
parm: uapsd_disable:disable U-APSD functionality (default: N) (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 from 1 - 5, default: 1) (int)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
[cfg80211]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/net/wireless/cfg80211.ko
srcversion: A189C096E57D9F63A205933
depends:
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
[wmi]
filename: /lib/modules/3.17.0-031700rc7-generic/kernel/drivers/platform/x86/wmi.ko
srcversion: 2E987FE96F7EBB6BFC7E2B2
depends:
parm: debug_event:Log WMI Events [0/1] (bool)
parm: debug_dump_wdg:Dump available WMI interfaces [0/1] (bool)
udev rules ~~~~~~~~~~~~~~~~~~~~~~~~~
# PCI device 0x10ec:/sys/devices/pci0000:00/0000:00:1c.3/0000:08:00.0 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC eth0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x8086:/sys/devices/pci0000:00/0000:00:1c.2/0000:07:00.0 (iwlwifi)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC wlan0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
# USB device 0x0b05:0x17ab (usb)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC wlan1>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan1"
Custom files/entries ~~~~~~~~~~~~~~~
/etc/modules : Default
/etc/rc.local : Default
/etc/modprobe.d : Default
/etc/pm/(cnf|pw|sl) : Default
Kernel boot line ~~~~~~~~~~~~~~~~~~~
BOOT_IMAGE=/boot/vmlinuz-3.17.0-031700rc7-generic root=UUID=e758ec89-625a-4515-9969-028465cd807a ro quiet splash vt.handoff=7
dmesg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ 0.032369] Initializing cgroup subsys net_cls
[ 0.032376] Initializing cgroup subsys net_prio
[ 0.620306] microcode: Microcode Update Driver: v2.00 <[email protected]>, Peter Oruba
[ 0.620781] audit: initializing netlink subsys (disabled)
[ 1.184620] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[ 5.735860] wmi: Mapper loaded
[ 6.431490] iwlwifi 0000:07:00.0: irq 49 for MSI/MSI-X
[ 6.535493] iwlwifi 0000:07:00.0: Direct firmware load for iwlwifi-3160-10.ucode failed with error -2
[ 6.535497] iwlwifi 0000:07:00.0: Falling back to user helper
[ 6.640417] iwlwifi 0000:07:00.0: loaded firmware version 25.222.9.0 op_mode iwlmvm
[ 7.379896] iwlwifi 0000:07:00.0: Detected Intel(R) Dual Band Wireless AC 3160, REV=0x164
[ 7.379942] iwlwifi 0000:07:00.0: L1 Disabled; Enabling L0S
[ 7.380156] iwlwifi 0000:07:00.0: L1 Disabled; Enabling L0S
[ 7.617831] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 12.498578] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.054253] iwlwifi 0000:07:00.0: L1 Disabled; Enabling L0S
[ 14.054470] iwlwifi 0000:07:00.0: L1 Disabled; Enabling L0S
[ 14.065086] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 14.119883] r8169 0000:08:00.0: Direct firmware load for rtl_nic/rtl8168g-2.fw failed with error -2
[ 14.120838] r8169 0000:08:00.0 eth0: unable to load firmware patch rtl_nic/rtl8168g-2.fw (-11)
[ 22.496297] wlan0: authenticate with <MAC C-01 Default>
[ 22.498622] wlan0: send auth to <MAC C-01 Default> (try 1/3)
[ 22.500202] wlan0: authenticated
[ 22.500320] iwlwifi 0000:07:00.0 wlan0: disabling HT/VHT due to WEP/TKIP use
[ 22.500323] iwlwifi 0000:07:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[ 22.500325] iwlwifi 0000:07:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[ 22.500639] wlan0: associate with <MAC C-01 Default> (try 1/3)
[ 22.503785] wlan0: RX AssocResp from <MAC C-01 Default> (capab=0x451 status=0 aid=2)
[ 22.504601] wlan0: associated
[ 22.504636] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
======== Done ========
答案1
这只是针对所有使用 Intel Wireless 3160ac（我猜还有 7260）的用户的更新。从错误报告中可以看到： https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1354975
我打开了 Ubuntu 14.04 并从以下位置安装了内核 3.13.0-37_3.13.0-37.64+iwlltr0001： http://people.canonical.com/~sforshee/iwl-ltr/trusty/
然后我从 backports3.16-1 安装了最后一个 iwlwifi 和英特尔固件 iwlwifi-3160-9-ucode。
之后，我在终端中输入：
$echo "options iwlmvm power_scheme=1" | sudo tee /etc/modprobe.d/iwlmvm.conf
$echo "options iwlwifi bt_coex_active=Y swcrypto=1 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf
$sudo reboot
目前，经过 3 个多小时的测试（连续导航），wifi 连接稳定（没有断开连接），速度不如应有的快，但似乎可以使用。如果您对如何改善连接有任何想法，请告诉我。
我希望有人会发现这篇文章很有用。
答案2
我遇到了类似的问题。我从这里下载了固件：http://wireless.kernel.org/en/users/Drivers/iwlwifi
并将 .ucode 文件复制到 /lib/firmware。重启后一切正常。我安装了 linux-firmware 和 linux-firmaware-nonfree 软件包，但我认为它们可能装有旧版本的固件。
无论如何，我希望这能帮助遇到类似问题的人。
答案3
使用“英特尔无线 3160ac 芯片组”，我无法与任何 AP（接入点）关联。
首先我尝试了上面的补丁（禁用 11n） - 但我不喜欢这个解决方案，因为我被迫使用较低的比特率。
经过一些额外的研究，我发现了问题 - 蓝牙。它在 iwlwifi 驱动程序中被解决为 WiFi/BT 共存问题。
==== 修复 ====
[超级简单] - 禁用 bt_coex_active 标志：
echo options iwlwifi bt_coex_active=0 | sudo tee /etc/modprobe.d/iwlwifi.conf
答案4
尝试关闭蓝牙（例如使用 rfkill）。
从 14.10 升级到 15.04 后，我遇到了类似的问题。我有一台 Carbon X1，但它也使用 iwlwifi。我通过使用 rfkill 关闭蓝牙解决了这个问题。iwlwifi 驱动程序的页面表明同时运行 wifi 和蓝牙很困难。我注意到脚本报告您的蓝牙至少已启用。
有一些 iwlwifi 驱动程序参数可用于尝试使两者更好地协同工作，如果您确实需要蓝牙，您可以探索这些参数。我没有用它，所以我把它关掉了，一切都很好。
我猜测我发生了什么：在我安装 14.10 后，我删除了一堆我不需要的软件包。可能其中一个是蓝牙。因此问题从未出现。然后当我升级时，某种我们认为每个人都想要的 ubuntu-basic-packages 元包依赖于蓝牙，因此重新安装了蓝牙，从而产生了问题。这似乎也可能是你遇到的情况。