Arch Linux

freyr

Member

From: Hungary

Registered: 2010-02-04

Posts: 131

PCI Express WLAN card doesn't see 802.11n Wi-Fi when it's on 5 GHz

Hi!

I bought a TP-Link Archer T6E PCI Express card for my PC today. I installed broadcom-wl-dkms, shut down the PC, installed the card, unplugged the Ethernet cable, booted up the system and nothing happened. The card was active, I could see it with ifconfig, it was up, the driver was loaded but Network Manager didn't see any networks. I checked the Arch Wiki and searched forums but couldn't find anything helpful. I even replaced Network Manager with Wicd temporarily but it did not work. Everything seemed okay yet I couldn't connect to my WLAN.

After some thinking I though I reboot the "router". After it booted up, the 5 GHz caught my attention, I switched it to 2.4 and a few seconds later the WLAN appeared in the menu of nm-applet. After clicking on it and typing in my password my PC was connected to Wi-Fi for the first time in her life.
According to its specs, the Archer T6E does work with 802.11n on 5 GHz, so what could be the problem on my end?

I'm fairly certain it's not the "router", my phone, others' phones and notebooks (running Windows) didn't have any problem with this WLAN setup.
At the moment I can't install Windows to see if it works so I have to ask: could this be a problem with either the driver, Arch or Linux itself?

Here's what lspci has to say about the card:

lspci -k
02:00.0 Network controller: Broadcom Limited BCM4360 802.11ac Wireless Network Adapter (rev 03)
	Subsystem: Broadcom Limited BCM4360 802.11ac Wireless Network Adapter
	Kernel driver in use: wl
	Kernel modules: bcma, wl

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What, so everyone's supposed to sleep every single night now? You realize that nighttime makes up half of all time?

loqs

Member

Registered: 2014-03-06

Posts: 18,960

Re: PCI Express WLAN card doesn't see 802.11n Wi-Fi when it's on 5 GHz

Wireless_network_configuration#Respecting_the_regulatory_domain?

freyr

Member

From: Hungary

Registered: 2010-02-04

Posts: 131

Re: PCI Express WLAN card doesn't see 802.11n Wi-Fi when it's on 5 GHz

Found the problem: No 5GHz for BCM4360 (14e4:43a0) devices

It appears to be a bug more than two years old so I'm not holding my breath for the fix.

Last edited by freyr (2018-05-26 00:16:26)

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What, so everyone's supposed to sleep every single night now? You realize that nighttime makes up half of all time?