I have an onboard wifi solution which I didnt know about before I bought an ASUS wifi card (ASUS PCE-AC68).
When booting, my WIFI is working fine, but I am getting only 100mbs. I want to swap to the ASUS card to see if that helps with the speed. I am having 1gbs on wired, but wired is not an option anymore - unfortunately.
How do I go about and swap what card is the one being used, and how do I swap back if the broadcom solution causes me too much trouble?
I would simply blacklist the device (not the driver; both most likely use the same driver) which you don’t want to use.
You could simply create two blacklist files (one for each device) and just use the one for the device you don’t want to use.
Maybe the problems are gone, if both devices don’t interfere any more.
I’m not sure, if there is an option to switch between devices in a running system at all.
Just my thought. Never used 2 WLAN devices with one computer. Worked perfectly for me with two bluetooth devices on my Netbook.
You can use,
nmcli d disconnect <your net work card name or ID>
to disconnect whatever card you want using the terminal.
and
nmcli d connect <your net work card name or ID>
connect the card you want from the terminal.
You can use ifconfig to find out the interface name.
lspci yielded this:
lspci | egrep -i --color 'wifi|wlan|wireless'
04:00.0 Network controller: Broadcom Inc. and subsidiaries BCM4360 802.11ac Wireless Network Adapter (rev 03)
05:00.0 Network controller: Intel Corporation Wireless-AC 9260 (rev 29)
and iwconfig just returned: Bit Rate=300 Mb/s, which is way less than my ASUS should give me. Therefore I am just assuming that the card being used is the onboard Intel one.
Any tips to how I can check this and find the name/ID of my wifi card?
Try,
ip link
Which would give you a list of you installed network interfaces. Like below.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 30:5a:3a:80:ad:c3 brd ff:ff:ff:ff:ff:ff
3: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
4: virbr1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000
11: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
12: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master virbr0 state UNKNOWN mode DEFAULT group default qlen 1000
To disable one you can use.
sudo ifconfig <interface name> down
To enable it.
sudo ifconfig <interface name> up
It appears to me as I only have 1 wlan card here:
ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
Yes, if the other is detected it would sure to appear in the list.
Any advise on how to proceed with troubleshooting to get the wifi up to the expected speed? 
As far as I know, it depends on the card. If the card maxes out on 300Mbps then we can;t get it go beyond. Also, the router or your access point also has to support the same speeds to get the best out of the connection.
The new card (the ASUS one, which I did find on 04:00.0) is capable of up to 1300mbs, afaik.
My router and access points (Ubiquiti AP AC Pro) also handles up to 1300mbs.
I have gotten 1gbs when on wired with the same config (computer, os, network load), so I know it works. But the last update (first on WiFi) gave me average og 1400 KiB/s, and thats pretty far off what I’m used to.
And this is why I’m assuming that I’m using the onboard intel wifi card. But I cant seem to be able to swap to the new card after installing it physically yesterday.