On 2018-07-31 01:41, David C. Rankin wrote:
On 07/30/2018 06:29 PM, Carlos E. R. wrote:
Do you believe me now? Photo of AP point (Android, server AP) says 5 GHz. Linux laptop (client) says 2.4 Ghz.
I'm guessing here, but both can be true. Your phone can be offering 5GHz as a hotspot. Your laptop connects but can only negotiate a connection on the fallback 2.4GHz band. You phone isn't going to reflect the fallback speed your laptop actually connected with -- it's just going to reflect what it is offering.
The question I see is does you laptop attempt to negotiate a 5GHz connection and then fallback to 2.4 -- or does it never try in the first place?
I doubt this is logged by default, but with iwconfig, you can use the --freq option to attempt a manual connection a 5GHz and see what happens?
I just configured Network Manager on the laptop to use only 5 GHz, not automatic. It took a while, asked for the wifi password... and connected on 2.4 GHz, channel untold. 2.462 Ghz. In fact, Network Manager creates a secondary profile where the band is automatic, not 5 GHz, and connect using that profile. I edit the secondary profile to say 5 Ghz. I disconnect, connect to it again, and creates a third profile at "automatic". And always connects at 2.4 Ghz. The phone lies. It does not provide a 5 GHz connection. The software has it, but probably the hardware is not capable and uses 2.4 always. -- Cheers / Saludos, Carlos E. R. (from 42.3 x86_64 "Malachite" at Telcontar)