[Cerowrt-devel] Managed to break 802.11n (on a 3800)

[Aaron Wood]

They help provide a good counterpoint, thanks!  Interesting that yours
don't list the pci path (as mine now do after the reset):

config wifi-device 'radio1'
option type 'mac80211'
option channel '36'
option hwmode '11na'
option path 'pci0000:00/0000:00:12.0'
option htmode 'HT40+'
list ht_capab 'SHORT-GI-40'
list ht_capab 'TX-STBC'
list ht_capab 'RX-STBC1'
list ht_capab 'DSSS_CCK-40'
option txpower '17'
option country 'FR'

-Aaron


On Thu, Jan 16, 2014 at 4:38 PM, Robert Bradley
<robert.bradley1 at gmail.com>wrote:

>  On 16/01/2014 15:03, Aaron Wood wrote:
>
>  All,
>
>  I'm noting this here in case anyone is interested.  After I write this
> up, I'm going to start from scratch on the configuration, and factory-reset
> the router.
>
>  =====
>
>  The 5GHz radio on my 3800 seems to be in a very odd state.  I'm not
> quire sure what state it's in, but it seems to be only doing HT20 1x1.  And
> in a fairly broken manner at that.
>
>
> <snip>
>
>
>  And here are radio blocks from the current /etc/config/wireless:
>
>  config wifi-device 'radio1'
>  option type 'mac80211'
>  option macaddr '28:c6:8e:bb:9a:49'
>  list ht_capab 'SHORT-GI-40'
>  list ht_capab 'TX-STBC'
>  list ht_capab 'RX-STBC1'
>  list ht_capab 'DSSS_CCK-40'
>  option txpower '17'
>  option distance '25'
>  option channel '48'
>  option country 'US'
>
>
> That's interesting, since it's missing a few configuration options and
> seems to be still using the US country code for the 5 GHz interface.  For
> what it's worth, my router's configuration looks like this (with the MAC
> address changed to match your configuration):
>
>
> config wifi-device 'radio1'
>         option type 'mac80211'
>         option channel '36'
>         option hwmode '11na'
>
>         option macaddr '28:c6:8e:bb:9a:49'
>         list ht_capab 'SHORT-GI-40'
>         list ht_capab 'TX-STBC'
>         list ht_capab 'RX-STBC1'
>         list ht_capab 'DSSS_CCK-40'
>         option disabled '0'
>         option txpower '17'
>         option country 'GB'
>         option htmode 'HT40+'
>
> I'm using channel 36 and HT40+ here at 17 dBm.  This is also from a
> UK-based router, so you'll probably want to change the country code from GB
> to FR.  I'm seeing about 270 Mb/s using Intel wireless (4965AGN) and
> Windows 7 about 2.5 m away from the router with those settings.
>
>
>   config wifi-device 'radio0'
>  option type 'mac80211'
>  option hwmode '11ng'
>  option macaddr '28:c6:8e:bb:9a:47'
>  option htmode 'HT20'
>  list ht_capab 'SHORT-GI-40'
>  list ht_capab 'TX-STBC'
>  list ht_capab 'RX-STBC1'
>  list ht_capab 'DSSS_CCK-40'
>  option txpower '26'
>  option country 'FR'
>  option distance '15'
>  option channel 'auto'
>
>
> My settings for the 2.4 GHz side (deliberately limited to HT20 to avoid
> interference):
>
>
> config wifi-device 'radio0'
>         option type 'mac80211'
>         option hwmode '11ng'
>         option macaddr '28:c6:8e:bb:9a:47'
>         option htmode 'HT20'
>         list ht_capab 'SHORT-GI-40'
>         list ht_capab 'TX-STBC'
>         list ht_capab 'RX-STBC1'
>         list ht_capab 'DSSS_CCK-40'
>         option disabled '0'
>         option channel '1'
>         option country 'GB'
>         option txpower '20'
>
> This time I'm using channel 1 at 20 dBm.  In both of these blocks I'm
> leaving the distance option unspecified.
>
> Hope this helps a bit!
>
> --
> Robert Bradley
>
>
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>
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