Realtek AC600 linux setup

Question

I'm trying to install a wifi dongle on my arch-linux pc.

When I plug it in, it doesnt detect it:

# ~ 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: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether bc:5f:f4:cf:b0:f2 brd ff:ff:ff:ff:ff:ff

So, as stated on the arch wiki, I installed dkms and rtl88xxau-aircrack-dkms-git package.

After doing that, I can see the device:

# ~ 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: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether bc:5f:f4:cf:b0:f2 brd ff:ff:ff:ff:ff:ff
3: wlp0s29u1u3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 34:e8:94:ca:8f:05 brd ff:ff:ff:ff:ff:ff


# ~ iw dev
phy#0
    Interface wlp0s29u1u3
        ifindex 3
        wdev 0x1
        addr 34:e8:94:ca:8f:05
        type managed
        txpower 0.00 dBm

But now, when I try to put it up I get:

# ~ ip link set wlp0s29u1u3 up
RTNETLINK answers: Operation not permitted

rfkill is not the problem here:

# ~ rfkill list
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

Of course, wpa_supplicant isn't connecting either:

# ~ wpa_supplicant -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlp0s29u1u3
Successfully initialized wpa_supplicant
Could not set interface wlp0s29u1u3 flags (UP): Operation not permitted
nl80211: Could not set interface 'wlp0s29u1u3' UP
nl80211: deinit ifname=wlp0s29u1u3 disabled_11b_rates=0
wlp0s29u1u3: Failed to initialize driver interface

Any ideas on whats the problem and how to solve it?