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Hi All, |
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Just in case anybody ever stumbles into the same issues. |
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I had huge performance issues with my work notebook Lenovo T430s running |
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Windows 8 and an Intel Centrino Advanced-N 6205 wireless network adapter, |
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connected to my Gentoo machine that has a TP Link TL-WN781ND network |
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adapter. |
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With performance issues I mean: the task manager showed only 802.11g |
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instead of n - and even this was not working fine as I had connection |
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drops, low reaction when connected via SSH to the machine, etc. |
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When using, for example, www.speedtest.net the test could not start due to |
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a failing ping and iperf showed about 100Kbit/s... |
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My setup is: |
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02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network |
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Adapter (rev 01) with hostapd |
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Sheldor thomas # cat /etc/hostapd/hostapd.conf |
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interface=wlp2s0 |
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driver=nl80211 |
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ssid=****** |
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bridge=br0 |
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hw_mode=g |
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ieee80211n=1 |
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macaddr_acl=0 |
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auth_algs=1 |
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ignore_broadcast_ssid=0 |
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wpa=2 |
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wpa_passphrase=*********** |
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wpa_key_mgmt=WPA-PSK |
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wpa_pairwise=TKIP |
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rsn_pairwise=CCMP |
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country_code=AT |
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logger_syslog=-1 |
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logger_syslog_level=2 |
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logger_stdout=-1 |
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logger_stdout_level=2 |
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channel=6 |
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ht_capab=[HT40-][SHORT-GI-40][RX-STBC1][DSSS_CCK-40][SHORT-GI-20] |
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wmm_enabled=1 |
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Two iPhones with iOS 7.1.1 and an iPad running iOS 6.1.3 did not have any |
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issues, the connection was really fast, although I could not verify if |
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802.11n is used - there is only an expensive iperf app (given that for PCs |
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it's free to download...) and I could not find a way to display the |
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connection type... speedtest.net showed 25MBit which is the maximum my |
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provider would provide for what I pay :) |
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I was trying to resolve the issue by trying out various ht_capab settings, |
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wmm_enabled, wmi_enabled etc... nothing helped. |
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What did help in the end is... updating the Windows driver through the |
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device manager! Windows now displays 802.11n and iperf gives me 37.3 |
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Mbits/sec, which is probably acceptable given the fact that I live in a |
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quite densely populated area and the PCI adapter in the server has only |
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2.4Ghz support. |
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So, if anyone experiences similar issues with Intel Centrino Advanced-N |
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6205 on Windows 8, try to update the driver first. |
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Thomas |
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