HP Stream 11でRealtek 8732beを使用すると非常に遅い
新しいHP Stream 11-r001ndがあります。ネットワークに接続できますが、速度が遅すぎます。ラップトップとルーターを隣り合わせに置いても、youtubeビデオを見るには遅すぎます（youtubeのWebページがまったく読み込まれない場合）。 Windows 10では、この問題は存在しませんでした。
この youtube video では、バージョン14.10を使用すると速度が許容範囲内であったことを示しています。しかし、そのバージョンはもうサポートされていません。
########## wireless info START ##########
Report from: 21 Jun 2016 16:42 CEST +0200
Booted last: 21 Jun 2016 00:00 CEST +0200
Script from: 26 May 2016 21:56 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 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]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
DeviceName: Foxconn WLAN Realtek Sanji RTL8723BE bgn 1x1 + BT 4 LE PCIe+USB NGFF 2230 M.2 WW
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:804c]
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:b006 Realtek Semiconductor Corp.
Bus 001 Device 008: ID 0ace:1211 ZyDAS ZD1211 802.11g
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 04f2:b50d Chicony Electronics Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
2: phy1: Wireless LAN
Soft blocked: no
Hard blocked: no
##### lsmod #############################
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
mac80211 737280 1 zd1211rw
cfg80211 565248 2 mac80211,zd1211rw
snd_soc_rt5640 114688 0
snd_soc_rl6231 16384 1 snd_soc_rt5640
snd_soc_core 212992 2 snd_soc_rt5640,snd_soc_sst_mfld_platform
snd_pcm 106496 8 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_soc_sst_mfld_platform,snd_pcm_dmaengine,snd_hda_core
wmi 20480 1 hp_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
wlx<IF from MAC [IF1]> Link encap:Ethernet HWaddr <MAC 'wlx<IF from MAC [IF1]>' [IF1]>
inet addr:192.168.2.5 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::6513:6163:ec8d:ccb5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2501 errors:0 dropped:0 overruns:0 frame:0
TX packets:2526 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1392891 (1.3 MB) TX bytes:375779 (375.7 KB)
##### iwconfig ##########################
lo no wireless extensions.
wlx<IF from MAC [IF1]> IEEE 802.11bg ESSID:"VGV75190BB329"
Mode:Managed Frequency:2.412 GHz Access Point: <MAC 'VGV75190BB329' [AC1]>
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=66/100 Signal level=66/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:3 Invalid misc:19 Missed beacon:0
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.2.254 0.0.0.0 UG 600 0 0 wlx<IF from MAC [IF1]>
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlx<IF from MAC [IF1]>
192.168.2.0 0.0.0.0 255.255.255.0 U 600 0 0 wlx<IF from MAC [IF1]>
##### resolv.conf #######################
nameserver 127.0.1.1
search home
##### network managers ##################
Installed:
NetworkManager
Running:
root 681 1 0 09:51 ? 00:00:03 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
Error: nmcli (1.2.0) and NetworkManager (1.1.93) versions don't match. Force execution using --nocheck, but the results are unpredictable.
Error: nmcli (1.2.0) and NetworkManager (1.1.93) versions don't match. Force execution using --nocheck, but the results are unpredictable.
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/VGV75190BB329]] (600 root)
[connection] id=VGV75190BB329 | type=wifi | permissions=user:ubuntu:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=VGV75190BB329
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/VGV75190BB329 1]] (600 root)
[connection] id=VGV75190BB329 1 | type=wifi | permissions=user:thijs:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=VGV75190BB329
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/VGV75190BB329 2]] (600 root)
[connection] id=VGV75190BB329 2 | type=wifi | permissions=user:thijs:;
[wifi] mac-address=<MAC 'wlx<IF from MAC [IF1]>' [IF1]> | mac-address-blacklist= | ssid=VGV75190BB329
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Europe/Amsterdam (based on set time zone)
country NL: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-OUTDOOR
(5250 - 5330 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS
(5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
(57000 - 66000 @ 2160), (N/A, 40), (N/A)
##### iwlist channels ###################
lo no frequency information.
wlx<IF from MAC [IF1]> 13 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
Current Frequency:2.412 GHz (Channel 1)
##### iwlist scan #######################
lo Interface doesn't support scanning.
Channel occupancy:
2 APs on Frequency:2.412 GHz (Channel 1)
2 APs on Frequency:2.437 GHz (Channel 6)
1 APs on Frequency:2.442 GHz (Channel 7)
1 APs on Frequency:2.462 GHz (Channel 11)
wlx<IF from MAC [IF1]> Scan completed :
Cell 01 - Address: <MAC 'VGV75190BB329' [AC1]>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=66/100 Signal level=66/100
Encryption key:on
ESSID:"VGV75190BB329"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000032f60cab0e4
Extra: Last beacon: 68ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC '' [AC2]>
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=20/100 Signal level=20/100
Encryption key:off
ESSID:""
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000eaf31214f
Extra: Last beacon: 440ms ago
Cell 03 - Address: <MAC 'VFNL-BA1D5B' [AC3]>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=40/100 Signal level=40/100
Encryption key:on
ESSID:"VFNL-BA1D5B"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=00000374c72e2c2b
Extra: Last beacon: 80ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 04 - Address: <MAC 'UPC4419724' [AC4]>
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=31/100 Signal level=31/100
Encryption key:on
ESSID:"UPC4419724"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000203ca54961
Extra: Last beacon: 80ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Authentication Suites (1) : PSK
Cell 05 - Address: <MAC 'walid72' [AC5]>
Channel:7
Frequency:2.442 GHz (Channel 7)
Quality=43/100 Signal level=43/100
Encryption key:on
ESSID:"walid72"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000051a371e5da7
Extra: Last beacon: 80ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 06 - Address: <MAC 'TELE2-5D3D07' [AC6]>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=16/100 Signal level=16/100
Encryption key:on
ESSID:"TELE2-5D3D07"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000002d0d00fd9c5
Extra: Last beacon: 80ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
##### module infos ######################
[mac80211]
filename: /lib/modules/4.4.0-24-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 2FFAEED0245CA1D97FE1E44
depends: cfg80211
intree: Y
vermagic: 4.4.0-24-generic SMP mod_unload modversions
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by 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 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)
[cfg80211]
filename: /lib/modules/4.4.0-24-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 25A45701AAA64DAC1E47D9D
depends:
intree: Y
vermagic: 4.4.0-24-generic SMP mod_unload modversions
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[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
[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/intel-microcode-blacklist.conf]
blacklist microcode
[/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 #############################
[10532.987919] wlx<IF from MAC [IF1]>: authenticated
[10532.990572] wlx<IF from MAC [IF1]>: associate with <MAC 'VGV75190BB329' [AC1]> (try 1/3)
[10532.994114] wlx<IF from MAC [IF1]>: RX AssocResp from <MAC 'VGV75190BB329' [AC1]> (capab=0x411 status=0 aid=1)
[10532.994148] wlx<IF from MAC [IF1]>: associated
[10532.994253] IPv6: ADDRCONF(NETDEV_CHANGE): wlx<IF from MAC [IF1]>: link becomes ready
[24341.729193] wlx<IF from MAC [IF1]>: deauthenticating from <MAC 'VGV75190BB329' [AC1]> by local choice (Reason: 3=DEAUTH_LEAVING)
[24359.825298] zd1211rw 1-2.1:1.0 wlx<IF from MAC [IF1]>: renamed from wlan0
[24359.869707] IPv6: ADDRCONF(NETDEV_UP): wlx<IF from MAC [IF1]>: link is not ready
[24359.876232] usb 1-2.1: firmware version 0x4330 and device bootcode version 0x4802 differ
[24359.919778] zd1211rw 1-2.1:1.0: firmware version 4605
[24359.947673] IPv6: ADDRCONF(NETDEV_UP): wlx<IF from MAC [IF1]>: link is not ready (repeated 2 times)
[24360.985805] wlx<IF from MAC [IF1]>: authenticate with <MAC 'VGV75190BB329' [AC1]>
[24360.996462] wlx<IF from MAC [IF1]>: send auth to <MAC 'VGV75190BB329' [AC1]> (try 1/3)
[24360.998389] wlx<IF from MAC [IF1]>: authenticated
[24361.000117] wlx<IF from MAC [IF1]>: associate with <MAC 'VGV75190BB329' [AC1]> (try 1/3)
[24361.003298] wlx<IF from MAC [IF1]>: RX AssocResp from <MAC 'VGV75190BB329' [AC1]> (capab=0x411 status=0 aid=1)
[24361.003335] wlx<IF from MAC [IF1]>: associated
[24361.003403] IPv6: ADDRCONF(NETDEV_CHANGE): wlx<IF from MAC [IF1]>: link becomes ready
########## wireless info END ############
モジュールのリロード：
thijs@Portable:~$ Sudo modprobe -rv rtl8723be
thijs@Portable:~$ Sudo modprobe -v rtl8723be ant_sel=2
insmod /lib/modules/4.4.0-24-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtlwifi.ko
modprobe: ERROR: could not insert 'rtl8723be': Required key not available
thijs@Portable:~$ Sudo modprobe -rv rtl8723be
thijs@Portable:~$ Sudo modprobe -v rtl8723be ant_sel=1
insmod /lib/modules/4.4.0-24-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtlwifi.ko
modprobe: ERROR: could not insert 'rtl8723be': Required key not available
thijs@Portable:~$
ワイヤレススクリプトの結果を確認しました。
2つのエラーメッセージがあります。 Error: nmcli (1.2.0) and NetworkManager (1.1.93) versions don't match. Force execution using --nocheck, but the results are unpredictable.これは別のユーザーによって bug 1590335 として報告されていますが、再起動により修正されました。
[24359.876232] usb 1-2.1: firmware version 0x4330 and device bootcode version 0x4802 differ
[24359.919778] zd1211rw 1-2.1:1.0: firmware version 4605.
これは、誤ったファームウェアがUSBワイヤレスデバイスにロードされていることを示しているようです。
ただし、実際の問題は Realtek WifiカードRTL8723beが正しく動作しない のようです。そこにあるソリューションに記載されている手順に従ってください。
これで問題が解決した場合は、左側のチェックマークをクリックして、問題が解決したことを示してください。 wifiスクリプトの出力を再ポストしない場合、できれば他の2つのエラーを解決した後。最初のものは再起動後に消えます。スクリプトを実行する前にUSBデバイスを取り外した場合、2番目は表示されません。
ワイヤレススクリプトの2回目の実行結果を確認しました。いくつかのフラグメントを見てみましょう。
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:700903 errors:0 dropped:0 overruns:0 frame:0
TX packets:388503 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 ??
RX bytes:956196276 (956.1 MB) TX bytes:35329540 (35.3 MB)
これは、ワイヤレス接続が完全に機能し、ほぼ1ギガバイトのデータを受信していることを示しています。次のフラグメント
Link Quality=62/100 Signal level=62/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:10090 Invalid misc:95221 Missed beacon:0
ワイヤレスアダプターが困難な状況で実行されていることを示します。詰まっているようです。
SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE *
VGV75190BB329 <MAC 'VGV75190BB329' [AC1]> Infra 1 2412 MHz 54 Mbit/s 62 ▂▄▆_ WPA2 yes *
walid72 <MAC 'walid72' [AC4]> Infra 7 2442 MHz 54 Mbit/s 44 ▂▄__ WPA2 no
HP-Print-C3-Deskjet 2540 series <MAC 'HP-Print-C3-Deskjet 2540 series' [AC2]> Infra 1 2412 MHz 54 Mbit/s 35 ▂▄__ WPA2 no
UPC4419724 <MAC 'UPC4419724' [AC3]> Infra 6 2437 MHz 54 Mbit/s 31 ▂▄__ WPA1 WPA2 no
VFNL-BA1D5B <MAC 'VFNL-BA1D5B' [AN5]> Infra 6 2437 MHz 54 Mbit/s 27 ▂___ WPA2 no
HP-Print-7E-Photosmart 5520 <MAC 'HP-Print-7E-Photosmart 5520' [AN6]> Infra 6 2437 MHz 54 Mbit/s 14 ▂___ WPA2 no
これは、HP-print-C3-Deskjet 2540シリーズと呼ばれるアクセスポイントから妨害が発生していることを示しています。アクセスポイントまたはプリンタのRFチャネルを変更して、異なるチャネルに配置することをお勧めします。現時点では、両方ともチャネル1にあります。使用されている他のチャネルは6と7だけなので、選択できるものはたくさんあります。
ワイヤレスダイレクトボタンを押したため、プリンターはアクセスポイントとして機能しています（ユーザーマニュアルの53ページを参照）。マニュアルの49ページの指示に従って、プリンターをルーターに接続しておく必要があります。ユーザーマニュアルはオンラインで入手できます here