I'm facing a strange issue, which was revealed to me only because I bought a dual-band wireless router, namely a TP-Link Archer C2 AC750 (sic) with 2.4Ghz and 5GHz wireless access point. Before that I had an old Linksys WRT54G that I had flashed with DD-WRT.
A while ago my router started to act weirdly and I assumed the Flash memory wore out — I had used for years the NVRAM to hold the system log and DHCP leases. In parallel I also noticed
Network Manager on my Manjaro laptop would no longer list my Linksys access point.
EDIT: Following this I could also confirm
iwlist scan wouldn't list my ESSID either.
- Since I bought the new one I noticed my laptop would connect to my access point using the 5GHz band only.
- My Android phone (anyone else's as well) can connect to my AP's 2.4GHz band.
- Also my laptop can connect to any other 2.4 GHz band so far, especially at work.
- I tried booting with (a not-so-recent) Linux BBQ distribution, same symptoms: only my 5G network is visible (from
It's just at home, with my own router that my laptop seemingly refuses to use the 2.4GHz band. And I have no idea why.
For the record, my laptop is a Dell Latitude E6530. It has a Broadcom wireless chipset: BCM43228 802.11a/b/g/n. It runs Manjaro and IIRC I have kept the default network configuration from the installation on in 2015. None of the kernel series I tried did anything new.
Does anyone have a hint?