On 2011-03-27 4:37 PM, Klaus Müller wrote:
Felix Fietkau wrote:
On 2011-03-27 2:08 PM, Klaus Müller wrote:
Hello,
I'm running kernel 2.6.38.1 (from the OpenSuSE buildservice on OpenSuSE
11.4) and compat-wireless-2011-03-26 (the performance / functionality of
the driver delivered with 2.6.38.1 is unusable).
[...]
iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"ssid"
Mode:Managed Frequency:2.412 GHz Access Point:
00:25:33:22:11:00
Bit Rate=150 Mb/s Tx-Power=17 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
Link Quality=14/70 Signal level=-63 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4 Invalid misc:1423 Missed beacon:0
I run iwconfig 3 times in 7 seconds. The link quality alternated between
47 and 14.
Have you tried switching your AP to HT20 instead of HT40 to see if that
improves stability?
If the AP is set to HT20, this driver doesn't use IEEE 802.11n any more,
or, to say it more specific: the selected bit rate is max. 64 Mb/s and
the performance is even worse.
I'm wondering at all, why the ath9k driver doesn't switch to 300 Mb/s:
the rt3572sta-driver doesn't have any problem with both settings.
AR9285 is a single stream chipset, so it only has one antenna and can't
do any MIMO.
- Felix
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