On 13/02/16 05:11, Rick Stevens wrote:
On 02/11/2016 11:57 AM, Stephen Morris wrote:
> Hi,
>
> I have just upgraded my usb wireless adapter from a Dlink DWA182
> which was not supported by the kernel, which I'm told never will be
> supported by the kernel, to a Dlink DWA192 which appears to be natively
> supported by the kernel. The issue I have is that the network interface
> only sees the 2.4GHz ssid it doesn't see the 5GHz ssid, is this intended
> functionality, inadvertent or is support for the 5GHz band not
> implemented yet? I'm currently using the 4.3.5-300 kernel.
Can you tell us which driver is being used for your wifi? I suspect
it's the iwlwifi or rtlwifi (and things like rtl8192cu). If it's the
latter (rtlwifi), then I don't see anything in the driver params that
would disable 5GHz.
The command networkctl status wlp4s6 tells me it is using the
ath9k driver.
Iwconfig gives me the following information:
wlp4s6 IEEE 802.11bgn ESSID:"Linksys07468"
Mode:Managed Frequency:2.462 GHz Access Point:
C0:56:27:B8:94:6E
Bit Rate=121.5 Mb/s Tx-Power=17 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=44/70 Signal level=-66 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:17 Invalid misc:109 Missed beacon:0
I suspect this is because it is currently using the 2.4GHz band. The
ESSID above tells me that is the information for my router, not the
wireless adapter, and I am a little confused with the IEEE value as both
the router and the adapter are 802.11ac.
Can you do something like "iw phy" and see if it shows any 5GHz
capabilities?
As far as I can see the only band being shown is the 2.4GHz band, but
I
have attached the output in case I have missed something
It may be worth pointing out that I get the same issue under Ubuntu
15.04 as well, but I can use both channels under Windows 10 albeit with
a vendor supplied driver for the adapter.
regards,
Steve
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