Hostapd does not support 5Ghz config, but my card does

Philip Prindeville philipp_subx
Wed Aug 18 14:29:59 PDT 2010

  On 5/19/10 2:18 PM, Jouni Malinen wrote:
> On Wed, May 19, 2010 at 04:01:49PM +0200, Laurent B wrote:
>> I'm having problems setting up hostapd 0.7.2 in order to run 5ghz band in N
>> mode
> hostapd itself would be fine with 5 GHz configuration, but the driver
> does not allow it to be used for AP mode and hostapd will follow
> whatever the driver tells it in this context.

I'm seeing exactly the same issue, with the same card.

I'm running Fedora updated (

What's the workaround?  Running the card in "hw_mode=b"?


>> For me the ath9k module is ok as I can do a "iwconfig chan 48" (see below)
> I would assume this is only for a passive mode in which no frames are
> transmitted without an AP being there first, not for a mode where the
> card would be transmitted Beacon frames on its own..
>> wlan1: IEEE 802.11 Configured channel (48) not found from the channel list
>> of current mode (2) IEEE 802.11a
> This indicates that the driver did not allow AP mode on the specified
> channel (either because of the channel not being supported at all or
> because of beaconing not being supported on it).
>> wifiap:/lib/modules# iw reg get
> This will only give you list of generic regulatory rules for the
> country; use "iw list" to see more detailed information that the driver
> provides (no-IBSS and DFS/radar detection flags prevent hostapd from
> using the channel).

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