I'm trying to use NetworkManager built-in hotspot functionality with ASUS AC51 USB.
This uses wpa_supplicant over DBus. While 5 GHz hotspot and bridge work great at setup level, for some reason, my transfers are capped at exactly 54 Mbps.
I've also tested hostapd: was able to configure it to 80 MHz, and get (exactly) 4x higher speeds, or ~220 Mbps.
What is going wrong for wpa_supplicant? Isn't it supposed to be able to autoconfigure the adapter to the max of its capabilities?
± iw dev wlp8s0f4u1 info
Interface wlp8s0f4u1
ifindex 4
wdev 0x1
addr 04:42:1a:5b:ac:cf
ssid <SSID>
type AP
wiphy 0
channel 36 (5180 MHz), width: 20 MHz, center1: 5180 MHz
txpower 19.00 dBm
multicast TXQ:
qsz-byt qsz-pkt flows drops marks overlmt hashcol
tx-bytes tx-packets
0 0 2823 0 0 0 1
901860 2860
± iw dev wlp8s0f4u1 station dump
Station <MAC> (on wlp8s0f4u1)
inactive time: 3 ms
rx bytes: 92819253
rx packets: 91260
tx bytes: 79483297
tx packets: 58871
tx retries: 4111
tx failed: 9
rx drop misc: 0
signal: -61 [-61] dBm
signal avg: -60 [-60] dBm
tx bitrate: 86.7 MBit/s VHT-MCS 8 short GI VHT-NSS 1
tx duration: 5422958 us
rx bitrate: 86.7 MBit/s VHT-MCS 8 short GI VHT-NSS 1
rx duration: 400012 us
airtime weight: 256
expected throughput: 37.627Mbps
authorized: yes
authenticated: yes
associated: yes
preamble: long
WMM/WME: yes
MFP: yes
TDLS peer: no
DTIM period: 2
beacon interval:100
short slot time:yes
connected time: 423 seconds
associated at [boottime]: 67708.010s
associated at: 1681639933441 ms
current time: 1681640356245 ms
>From wpa_supplicant logs, I'm unclear on who's forcing `bandwidth=20` - is it NetworkManager, or wpa_supplicant's autoconfiguration?
Why isn't it configuring for more?
...
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Setup AP(wlp8s0f4u1) - device_ap_sme=0 use_monitor=0
...
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Set freq 5180 (ht_enabled=0, vht_enabled=0, he_enabled=0, eht_enabled=0, bandwidth=0 MHz, cf1=0 MHz, cf2=0 MHz)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * freq=5180
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * eht_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * he_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * vht_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * ht_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * radar_background=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * channel_type=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: Determining HT/VHT options based on driver capabilities (freq=5180 chan=36)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: Enable HT support (p2p_group=0 11a=1 ht40_hw_capab=1 ssid->ht40=0)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: HT secondary channel offset 0 for AP
apr 16 15:49:41 gusto wpa_supplicant[1116946]: No VHT higher bandwidth support for the selected channel 36
apr 16 15:49:41 gusto wpa_supplicant[1116946]: phy: phy0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Regulatory information - country=EE (DFS-ETSI)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 2400-2483 @ 40 MHz 20 mBm
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 5150-5250 @ 80 MHz 23 mBm (no outdoor)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 5250-5350 @ 80 MHz 20 mBm (no outdoor) (DFS)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 5470-5725 @ 160 MHz 26 mBm (DFS)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 5725-5875 @ 80 MHz 13 mBm
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 5945-6425 @ 160 MHz 23 mBm (no outdoor)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: 57000-66000 @ 2160 MHz 40 mBm
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Added 802.11b mode based on 802.11g information
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Mode IEEE 802.11g: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484[DISABLED][NO_IR]
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Mode IEEE 802.11a: 5180 5200 5220 5240 5260[RADAR] 5280[RADAR] 5300[RADAR] 5320[RADAR] 5500[RADAR] 5520[RADAR] 5540[RADAR] 5560[RADAR] 5580[RADAR] 5600[RADAR] 5620[RADAR] 5640[RAD>
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Mode IEEE 802.11b: 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484[DISABLED][NO_IR]
apr 16 15:49:41 gusto wpa_supplicant[1116946]: hw vht capab: 0x31800120, conf vht capab: 0x31800120
apr 16 15:49:41 gusto wpa_supplicant[1116946]: Completing interface initialization
apr 16 15:49:41 gusto wpa_supplicant[1116946]: Mode: IEEE 802.11a Channel: 36 Frequency: 5180 MHz
apr 16 15:49:41 gusto wpa_supplicant[1116946]: DFS 0 channels required radar detection
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: Set freq 5180 (ht_enabled=1, vht_enabled=1, he_enabled=0, eht_enabled=0, bandwidth=20 MHz, cf1=5180 MHz, cf2=0 MHz)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * freq=5180
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * eht_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * he_enabled=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * vht_enabled=1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * ht_enabled=1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * radar_background=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * bandwidth=20
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * channel_width=1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * center_freq1=5180
apr 16 15:49:41 gusto wpa_supplicant[1116946]: * center_freq2=0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[0] rate=60 flags=0x1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[1] rate=90 flags=0x0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[2] rate=120 flags=0x1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[3] rate=180 flags=0x0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[4] rate=240 flags=0x1
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[5] rate=360 flags=0x0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[6] rate=480 flags=0x0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: RATE[7] rate=540 flags=0x0
apr 16 15:49:41 gusto wpa_supplicant[1116946]: hostapd_setup_bss(hapd=0x5655361dd670 (wlp8s0f4u1), first=1)
apr 16 15:49:41 gusto wpa_supplicant[1116946]: nl80211: flush -> DEL_STATION wlp8s0f4u1 (all)
...
Thoughts welcome!
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