LinuxでIntelWireless-N7260が遅い
Intel Corporation Dual Band Wireless-N 7260（rev 73）Wifiカードを搭載した新しいAcer AspireV7-582PGを購入しました。
Windowsでは、すべてが正常に機能しますが、Linuxを使用すると、インターネットの速度が非常に遅くなります（Linux：100kb/s-500kB/s vs Windows：1-2MB/s）。私は今Fedora20とUbuntu14.04-betaを試しましたが、どちらも同じ問題を抱えています（どちらもカーネル3.13.0を実行しています）。また、2つの異なるWiFiネットワークを試しましたが、両方で同じ問題が発生しました。
Linuxでイーサネットを使用すると、1〜2MB /秒も達成されるため、アプリケーション層ではありません。
lspciは、使用中のカーネルドライバーがiwlwifiであることを教えてくれます。これは、正しいドライバーである必要があります。
04:00.0 Network controller: Intel Corporation Wirelesss 7260 (rev 73)
Subsystem: Intel Corporation Dual Band Wireless-N 7260
Flags: bus master, fast devsel, latency 0, IRQ 67
Memory at b3500000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number [...]
Capabilities: [14c] Latency Tolerance Reporting
Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
Kernel driver in use: iwlwifi
Dmesgまたはsyslogにエラーは表示されませんが、ここにいくつかのログがあります（wifiの有効化、アクセスポイントへの接続、大きなファイルのダウンロードの時間の経過とともに取得）
dmesg：
[ 1668.921529] wlan0: authenticate with [mac]
[ 1668.923754] wlan0: send auth to [mac] (try 1/3)
[ 1668.925720] wlan0: authenticated
[ 1668.928533] wlan0: associate with [mac] (try 1/3)
[ 1668.931371] wlan0: RX AssocResp from [mac] (capab=0x411 status=0 aid=1)
[ 1668.931901] wlan0: associated
[ 1668.931922] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1767.843948] systemd-hostnamed[4116]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
syslog：
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> enable requested (sleeping: no enabled: no)
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> waking up and re-enabling...
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (wlan0): bringing up device.
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (wlan0): deactivating device (reason 'managed') [2]
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> NetworkManager state is now CONNECTED_GLOBAL
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (eth0): bringing up device.
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (eth0): preparing device.
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> (eth0): deactivating device (reason 'managed') [2]
Apr 15 15:06:26 ubuntu NetworkManager[1729]: <info> NetworkManager state is now DISCONNECTED
Apr 15 15:06:26 ubuntu kernel: [ 1638.766440] r8169 0000:05:00.1 eth0: link down
Apr 15 15:06:26 ubuntu kernel: [ 1638.766502] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0): bringing up device.
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> WiFi hardware radio set enabled
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> WiFi now enabled by radio killswitch
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0): bringing up device.
Apr 15 15:06:29 ubuntu kernel: [ 1642.036186] iwlwifi 0000:04:00.0: RF_KILL bit toggled to enable radio.
Apr 15 15:06:29 ubuntu kernel: [ 1642.037447] iwlwifi 0000:04:00.0: L1 Disabled; Enabling L0S
Apr 15 15:06:29 ubuntu kernel: [ 1642.037669] iwlwifi 0000:04:00.0: L1 Disabled; Enabling L0S
Apr 15 15:06:29 ubuntu kernel: [ 1642.049872] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0) supports 5 scan SSIDs
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0): supplicant interface state: starting -> ready
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <warn> Trying to remove a non-existant call id.
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0): supplicant interface state: ready -> disconnected
Apr 15 15:06:29 ubuntu NetworkManager[1729]: <info> (wlan0) supports 5 scan SSIDs
Apr 15 15:06:29 ubuntu wpa_supplicant[2060]: wlan0: Reject scan trigger since one is already pending
Apr 15 15:06:29 ubuntu wpa_supplicant[2060]: wlan0: CTRL-EVENT-SCAN-STARTED
Apr 15 15:06:33 ubuntu NetworkManager[1729]: <info> (wlan0): supplicant interface state: disconnected -> inactive
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Auto-activating connection 'Ikarus'.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) starting connection 'Ikarus'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> NetworkManager state is now CONNECTING
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): preparing device.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0/wireless): access point 'Ikarus' has security, but secrets are required.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0/wireless): connection 'Ikarus' has security, and secrets exist. No new secrets needed.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: added 'ssid' value 'Ikarus'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: added 'scan_ssid' value '1'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: added 'auth_alg' value 'OPEN'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: added 'psk' value '<omitted>'
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Config: set interface ap_scan to 1
Apr 15 15:06:53 ubuntu wpa_supplicant[2060]: wlan0: CTRL-EVENT-SCAN-STARTED
Apr 15 15:06:56 ubuntu wpa_supplicant[2060]: wlan0: SME: Trying to authenticate with [mac] (SSID='Ikarus' freq=2412 MHz)
Apr 15 15:06:56 ubuntu kernel: [ 1668.921529] wlan0: authenticate with [mac]
Apr 15 15:06:56 ubuntu kernel: [ 1668.923754] wlan0: send auth to [mac] (try 1/3)
Apr 15 15:06:56 ubuntu wpa_supplicant[2060]: wlan0: Trying to associate with [mac] (SSID='Ikarus' freq=2412 MHz)
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): supplicant interface state: inactive -> associating
Apr 15 15:06:56 ubuntu kernel: [ 1668.925720] wlan0: authenticated
Apr 15 15:06:56 ubuntu kernel: [ 1668.928533] wlan0: associate with [mac] (try 1/3)
Apr 15 15:06:56 ubuntu wpa_supplicant[2060]: wlan0: Associated with [mac]
Apr 15 15:06:56 ubuntu kernel: [ 1668.931371] wlan0: RX AssocResp from [mac] (capab=0x411 status=0 aid=1)
Apr 15 15:06:56 ubuntu kernel: [ 1668.931901] wlan0: associated
Apr 15 15:06:56 ubuntu kernel: [ 1668.931922] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Apr 15 15:06:56 ubuntu wpa_supplicant[2060]: wlan0: WPA: Key negotiation completed with [mac] [PTK=CCMP GTK=CCMP]
Apr 15 15:06:56 ubuntu wpa_supplicant[2060]: wlan0: CTRL-EVENT-CONNECTED - Connection to [mac] completed [id=0 id_str=]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): supplicant interface state: associating -> completed
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'Ikarus'.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started...
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: config -> ip-config (reason 'none') [50 70 0]
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> dhclient started with pid 3971
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Beginning IP6 addrconf.
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Apr 15 15:06:56 ubuntu dhclient: Internet Systems Consortium DHCP Client 4.2.4
Apr 15 15:06:56 ubuntu dhclient: Copyright 2004-2012 Internet Systems Consortium.
Apr 15 15:06:56 ubuntu dhclient: All rights reserved.
Apr 15 15:06:56 ubuntu dhclient: For info, please visit https://www.isc.org/software/dhcp/
Apr 15 15:06:56 ubuntu dhclient:
Apr 15 15:06:56 ubuntu NetworkManager[1729]: <info> (wlan0): DHCPv4 state changed nbi -> preinit
Apr 15 15:06:56 ubuntu dhclient: Listening on LPF/wlan0/[mac]
Apr 15 15:06:56 ubuntu dhclient: Sending on LPF/wlan0/[mac]
Apr 15 15:06:56 ubuntu dhclient: Sending on Socket/fallback
Apr 15 15:06:56 ubuntu dhclient: DHCPREQUEST of 192.168.20.139 on wlan0 to 255.255.255.255 port 67 (xid=0x77e564c9)
Apr 15 15:06:57 ubuntu dhclient: DHCPACK of 192.168.20.139 from 192.168.20.1
Apr 15 15:06:57 ubuntu dhclient: bound to 192.168.20.139 -- renewal in 1394 seconds.
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> (wlan0): DHCPv4 state changed preinit -> reboot
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> address 192.168.20.139
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> prefix 24 (255.255.255.0)
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> gateway 192.168.20.1
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> hostname 'ubuntu'
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> nameserver '192.168.30.1'
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> nameserver '192.168.20.1'
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> domain name 'localwlan'
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Apr 15 15:06:57 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) started...
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) complete.
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> (wlan0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> NetworkManager state is now CONNECTED_GLOBAL
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> Policy set 'Ikarus' (wlan0) as default for IPv4 routing and DNS.
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> Writing DNS information to /sbin/resolvconf
Apr 15 15:06:58 ubuntu dnsmasq[3233]: setting upstream servers from DBus
Apr 15 15:06:58 ubuntu dnsmasq[3233]: using nameserver 192.168.20.1#53
Apr 15 15:06:58 ubuntu dnsmasq[3233]: using nameserver 192.168.30.1#53
Apr 15 15:06:58 ubuntu NetworkManager[1729]: <info> Activation (wlan0) successful, device activated.
Apr 15 15:06:58 ubuntu dbus[1169]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Apr 15 15:06:58 ubuntu dbus[1169]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Apr 15 15:07:05 ubuntu ntpdate[4049]: adjust time server 91.189.89.199 offset 0.000059 sec
Apr 15 15:07:17 ubuntu NetworkManager[1729]: <info> (wlan0): IP6 addrconf timed out or failed.
Apr 15 15:07:17 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Apr 15 15:07:17 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Apr 15 15:07:17 ubuntu NetworkManager[1729]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Apr 15 15:07:26 ubuntu wpa_supplicant[2060]: wlan0: CTRL-EVENT-SCAN-STARTED
ifconfig：
wlan0 Link encap:Ethernet HWaddr [mac]
inet addr:192.168.20.139 Bcast:192.168.20.255 Mask:255.255.255.0
inet6 addr: fe80::e8b:fdff:fe78:a807/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:267157 errors:0 dropped:0 overruns:0 frame:0
TX packets:139061 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:400828359 (400.8 MB) TX bytes:12138586 (12.1 MB)
iwconfig：
wlan0 IEEE 802.11abgn ESSID:"Ikarus"
Mode:Managed Frequency:2.412 GHz Access Point: [mac]
Bit Rate=54 Mb/s Tx-Power=16 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=53/70 Signal level=-57 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:952 Missed beacon:0
これは既知のドライバーのバグですか？または、ハードウェア障害であり、ノートブックを返送する必要がありますか？なぜそれがWindowsで動作するのか疑問に思います。
編集：/lib/firmwareを調べると、2つのファームウェアバージョンがインストールされていることがわかります。
$ ls -l |grep iwlwifi-7260
-rw-r--r--. 1 root root 683236 17. Mär 19:38 iwlwifi-7260-7.ucode
-rw-r--r--. 1 root root 679780 17. Mär 19:38 iwlwifi-7260-8.ucode
ただし、modinfoはiwlwifi-7260-7を使用していると言っています。問題ありますか？新しいiwlwifi-7260-8を使用するように指示できますか？それとも、最終的にはアップデートではなく、異なるカードバージョンに関する数字ですか？
ここにmodinfoの出力があります：
filename: /lib/modules/3.13.9-200.fc20.x86_64/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003-2013 Intel Corporation <[email protected]>
version: in-tree:d
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-3160-7.ucode
firmware: iwlwifi-7260-7.ucode
srcversion: D6BB6B39D0A7CAE63C6FE2E
alias: pci:v00008086d0000095Asv*sd00005490bc*sc*i*
alias: pci:v00008086d0000095Bsv*sd00005290bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005590bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005190bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005090bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005420bc*sc*i*
alias: pci:v00008086d0000095Asv*sd0000502Abc*sc*i*
alias: pci:v00008086d0000095Asv*sd00005020bc*sc*i*
alias: pci:v00008086d0000095Asv*sd00009410bc*sc*i*
[...]
alias: pci:v00008086d00004232sv*sd00001201bc*sc*i*
depends: cfg80211
intree: Y
vermagic: 3.13.9-200.fc20.x86_64 SMP mod_unload
signer: Fedora kernel signing key
sig_key: C3:7D:D7:50:43:06:5A:DE:BE:24:34:7F:CD:03:35:FA:C5:D0:3D:63
sig_hashalgo: sha256
parm: debug:debug output mask (uint)
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, 2=enable (default: 0) (int)
parm: nvm_file:NVM file name (charp)
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)
Bluetoothをオフにすると効果があることがわかりました。
同じチップ上にありますが、BluetoothマウスとWLANを使用すると、WLANが毎分クラッシュします。 Bluetoothがないと、しばらく動作しました。
それでも、「認証解除」と「キーの再生成」のメッセージがいくつか表示され、回復する場合もあれば、システム設定でWi-Fiをオフ/オンにする必要がある場合もあります。
奇妙な振る舞い。
私は多くのヒント（ウォッチドッグを無効にする、8011の「n」部分など）を見つけましたが、どれもうまくいきませんでした。そして、Bluetoothの使用法への接続が見つかりませんでした..。
私はUbuntu14.10を実行しているThinkpadX240を持っていますが、自宅や他のWi-Fiネットワークで7260の接続速度が遅い（他の7260以外のラップトップでは80-90MBps）という問題があります。
オンラインで収集した多数のヒントや微調整を試しても効果はありませんでしたが、最新の3.19メインラインカーネルと7260-10ファームウェアを実行することで、初めて標準の80-90に速度が上がりました。