Which version of system do you use? Khadas official images, self built images, or others?
Official build:
BOARD=Edge2
VENDOR=Rockchip
VERSION=1.7.5
ARCH=arm64
INITRD_ARCH=arm64
IMAGE_VERSION=1.7.5-250925
################ GIT VERSION ################
UBOOT_GIT_VERSION=khadas-edges-u-boot-2017.09-v1.7.5-release
LINUX_GIT_VERSION=khadas-edges-linux-6.1-v1.7.5-release
FENIX_GIT_VERSION=v1.7.5
#############################################
Please describe your issue below:
WLAN 5Ghz is working in the oowow (bit slower to connect than 2.4GHz) as well as in the testing only Ubuntu 24.04 6.12 kernel (just one wlan interface shown, here the USB-C display port doesn’t work).
Opening the wifi settings dialog as well as running nmcli in terminal doesn’t show any 5GHz access points (which work pretty well for all my other devices like Linux laptop, Android and IOS phones, … all the time).
Post a console log of your issue below:
nmcli d wifi list
IN-USE BSSID SSID MODE CHAN RATE SIGNAL BARS SECURITY
* C4:86:E3:30:6D:55 Some2.4AP Infra 1 195 Mbit/s 62 ▂▄▆_ WPA2
C4:86:E9:30:65:55 Speedport Infra 1 195 Mbit/s 62 ▂▄▆_ WPA2
BC:30:78:72:E1:46 WLAN-9028 Infra 6 540 Mbit/s 37 ▂▄__ WPA2
CC:DD:73:34:17:CE LibreELEC Infra 6 130 Mbit/s 30 ▂___ WPA2
3A:43:1D:E2:60:73 Vodafone Infra 11 130 Mbit/s 19 ▂___ --
38:45:AA:E2:60:73 Monstera Infra 11 130 Mbit/s 19 ▂___ WPA2
IN-USE BSSID SSID MODE CHAN RATE SIGNAL BARS SECURITY
C4:86:E3:30:6D:55 Some2.4AP Infra 1 195 Mbit/s 62 ▂▄▆_ WPA2
C4:86:E9:30:65:55 Speedport Infra 1 195 Mbit/s 62 ▂▄▆_ WPA2
BC:30:78:72:E1:46 WLAN-9028 Infra 6 540 Mbit/s 37 ▂▄__ WPA2
CC:DD:73:34:17:CE LibreELEC Infra 6 130 Mbit/s 30 ▂___ WPA2
3A:43:1D:E2:60:73 Vodafone Infra 11 130 Mbit/s 19 ▂___ --
38:45:AA:E2:60:73 Monstera Infra 11 130 Mbit/s 19 ▂___ WPA2
The kernel messages just show
[ 1457.401049] [dhd] [wlan1] wl_ext_set_chanspec : channel 2g-1(0x1001 20MHz)
but no indication of anything regarding 5Ghz. Kernel messages of the bootup:
root@Khadas:/home/khadas# dmesg|grep wlan
[ 14.106159] [WLAN_RFKILL]: Enter rfkill_wlan_init
[ 14.107884] [WLAN_RFKILL]: Enter rfkill_wlan_probe
[ 14.110869] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi_chip_type = ap6275p
[ 14.112345] [WLAN_RFKILL]: wlan_platdata_parse_dt: enable wifi power control.
[ 14.113814] [WLAN_RFKILL]: wlan_platdata_parse_dt: wifi power controled by gpio.
[ 14.115333] [WLAN_RFKILL]: wlan_platdata_parse_dt: WIFI,host_wake_irq = 0, flags = 0.
[ 14.116801] [WLAN_RFKILL]: wlan_platdata_parse_dt: The ref_wifi_clk not found !
[ 14.118260] [WLAN_RFKILL]: rfkill_wlan_probe: init gpio
[ 14.121186] [WLAN_RFKILL]: Exit rfkill_wlan_probe
drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd compiled on Sep 25 2025 at 22:43:30
[ 18.707090] [dhd] STATIC-MSG) dhd_static_buf_init : 101.10.361.36 (wlan=r892223-20231107-1)
[ 18.712835] [dhd] STATIC-MSG) dhd_init_wlan_mem : prealloc ok for index 0: 2371584(2316K)
[ 18.718491] [dhd] dhd_wlan_init_gpio: WL_HOST_WAKE=-1, oob_irq=142, oob_irq_flags=0x4
[ 18.718494] [dhd] dhd_wlan_init_gpio: WL_REG_ON=-1
[ 18.718687] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 3, size 139264
[ 18.718696] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 4, size 0
[ 18.738685] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 7, size 43840
[ 18.744414] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 0, size 5152
[ 18.750890] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 5, size 65536
[ 18.751149] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 19, size 65688
[ 19.053099] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 9, size 32896
drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd compiled on Sep 25 2025 at 22:43:30
[ 19.288781] [dhd] Register interface [wlan0] MAC: 70:f7:54:b8:cc:91
[ 19.288912] [dhd] [wlan0] wl_android_wifi_off : g_wifi_on=1 force_off=1
[ 19.302584] [dhd] [wlan0] wl_android_wifi_off : out
[ 19.303084] [dhd] Register interface [wlan1] MAC: 72:f7:54:b8:cc:91
[ 21.601130] [dhd] [wlan0] dhd_open : Enter
drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd compiled on Sep 25 2025 at 22:43:30
[ 21.601151] [dhd] [wlan0] wl_android_wifi_on : in g_wifi_on=0
[ 22.353383] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 9, size 32896
[ 22.432115] [dhd] [wlan0] wl_android_wifi_on : Success
[ 22.468487] [dhd] [wlan0] wl_cfg80211_up : Roam channel cache enabled
[ 22.470487] [dhd] [wlan0] dhd_open : Exit ret=0
[ 22.470491] [dhd] [wlan0] dhd_pri_open : tx queue started
[ 22.470602] [dhd] [wlan0] custom_xps_map_set : Done. mapping cpu
[ 22.478827] [dhd] [wlan1] dhd_static_if_open : Enter
[ 22.478829] [dhd] [wlan0] dhd_open : Primary net_device is already up
[ 22.485913] [dhd] [wlan1] dhd_static_if_open : Exit ret=0
[ 22.669320] [dhd] CFG80211-ERROR) wl_cfg80211_flush_pmksa : Not supporting Flushing pmklist on virtual interfaces than primary interface, primary_dev wlan0 dev wlan1
[ 27.971676] [dhd] [wlan0] wl_ext_set_chanspec : channel 2g-1(0x1001 20MHz)
[ 27.973737] [dhd] [wlan0] wl_conn_debug_info : Connecting with c4:86:e9:30:6d:c5 ssid "KleineStrolche", len (14), channel=2g-1(chan_cnt=1), sec=wpa2/psk/mfpc/aes, rssi=-64
[ 28.070206] [dhd] [wlan0] wl_iw_event : Link UP with c4:86:e9:30:6d:c5
[ 28.070217] [dhd] [wlan0] wl_ext_iapsta_link : [S] Link UP with c4:86:e9:30:6d:c5
Have seen/read the previous discussions on that topic, but didn’t find any clue how to resolve this. I tried an older official Ubuntu image half a year ago: same issue. Working 5Ghz in Armbian, but no working USB-C displayport then (want to have two displays).
Waiting doesn’t help (after an hour no 5Ghz magically appears), same for switching off power management. The 2.4 link is stable, but the network is crammed and the bandwidth is much better in 5Ghz.
What should I do?