v-tal

I did this using nmtui. The problem is that when rebooting the kernel cannot manage power to the rtl8821cu. After boot: $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether d6:e3:db:f5:f2:24 brd ff:ff:ff:ff:ff:ff inet 192.168.100.124/24 metric 100 brd 192.168.100.255 scope global dynamic end0 valid_lft 259091sec preferred_lft 259091sec inet6 fe80::d4e3:dbff:fef5:f224/64 scope link valid_lft forever preferred_lft forever 3: wlx60fb005126f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 60:fb:00:51:26:f0 brd ff:ff:ff:ff:ff:ff $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 2: Dev 4, If 0, Class=Wireless, Driver=btusb, 480M |__ Port 2: Dev 4, If 1, Class=Wireless, Driver=btusb, 480M |__ Port 2: Dev 4, If 2, Class=Vendor Specific Class, Driver=rtl8821cu, 480M After reboot: $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether d6:e3:db:f5:f2:24 brd ff:ff:ff:ff:ff:ff inet 192.168.100.124/24 metric 100 brd 192.168.100.255 scope global dynamic end0 valid_lft 259185sec preferred_lft 259185sec inet6 fe80::d4e3:dbff:fef5:f224/64 scope link valid_lft forever preferred_lft forever $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 2: Dev 4, If 0, Class=Wireless, Driver=btusb, 480M |__ Port 2: Dev 4, If 1, Class=Wireless, Driver=btusb, 480M |__ Port 2: Dev 4, If 2, Class=Vendor Specific Class, Driver=, 480M Part of dmesg output after reboot (details in attachments at first post): [ 10.228925] ------------[ cut here ]------------ [ 10.228944] WARNING: CPU: 2 PID: 954 at drivers/net/wireless/rtl8811cu/hal/rtl8821c/rtl8821c_halinit.c:106 rtl8821c_power_on+0x50/0xa4 [8821cu] [ 10.229080] Modules linked in: lz4hc lz4 zram btusb binfmt_misc btrtl btintel btbcm 8821cu btmtk bluetooth ecdh_generic ecc meson_vdec(C) onboard_usb_hub snd_soc_hdmi_codec panfrost videobuf2_dma_contig v4l2_mem2mem gpu_sched polyval_ce videobuf2_memops videobuf2_v4l2 drm_shmem_ helper meson_gxbb_wdt polyval_generic videodev snd_soc_meson_g12a_tohdmitx snd_soc_meson_axg_tdmout snd_soc_meson_axg_sound_card snd_soc_meson_axg_frddr snd_soc_meson_codec_glue snd_soc_meson_card_utils meson_ir snd_soc_meson_axg_fifo meson_rng snd_soc_meson_axg_tdm_interface snd_s oc_meson_axg_tdm_formatter videobuf2_common dw_hdmi_i2s_audio rc_core snd_soc_core mc snd_compress meson_saradc ac97_bus snd_pcm_dmaengine snd_pcm snd_timer snd nvmem_meson_efuse soundcore cfg80211 rfkill dm_mod efi_pstore ip_tables x_tables autofs4 meson_gxl smsc realtek axg_audio dwmac_generic sclk_div clk_phase reset_meson_audio_arb rtc_meson_vrtc dwmac_meson8b adc_keys [ 10.229231] CPU: 2 PID: 954 Comm: kworker/2:3 Tainted: G C 6.6.47-current-meson64 #3 [ 10.229238] Hardware name: Banana Pi BPI-M2-PRO (DT) [ 10.229245] Workqueue: usb_hub_wq hub_event [ 10.229258] pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 10.229265] pc : rtl8821c_power_on+0x50/0xa4 [8821cu] [ 10.229361] lr : rtl8821c_power_on+0x4c/0xa4 [8821cu] [ 10.229453] sp : ffff800084e6b420 [ 10.229457] x29: ffff800084e6b420 x28: 0000000000000002 x27: 00000000ffffffed [ 10.229467] x26: ffff800079fa30c8 x25: ffff000007bbb000 x24: 0000000000000001 [ 10.229475] x23: 0000000000008129 x22: 0000000000000001 x21: ffff80008272d000 [ 10.229484] x20: ffff000003fc8000 x19: ffff8000824d5000 x18: ffff00006f39afec [ 10.229492] x17: 0000000000003ed0 x16: 00000000000d9c00 x15: 0000000000000001 [ 10.229500] x14: ffff00006f378480 x13: 0000000000000002 x12: 0000000000000000 [ 10.229509] x11: 0000000000000001 x10: 0000000000000a80 x9 : ffff800084e6afe0 [ 10.229517] x8 : ffff00006f370680 x7 : 0082008810000008 x6 : ffff00006f3706a8 [ 10.229525] x5 : ffff800079f3c300 x4 : ffff800079f3c300 x3 : ffff80007a03a7d8 [ 10.229533] x2 : 0000000000000001 x1 : 000000000000001e x0 : 00000000ffffffff [ 10.229542] Call trace: [ 10.229546] rtl8821c_power_on+0x50/0xa4 [8821cu] [ 10.229639] rtw_hal_power_on+0x24/0x60 [8821cu] [ 10.229731] hal_read_mac_hidden_rpt+0x154/0x25c [8821cu] [ 10.229823] rtl8821c_read_efuse+0x2d8/0x4d8 [8821cu] ...

This is what the network status looks like immediately after turning on the power: $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether d6:e3:db:f5:f2:24 brd ff:ff:ff:ff:ff:ff inet 192.168.100.124/24 metric 100 brd 192.168.100.255 scope global dynamic end0 valid_lft 259179sec preferred_lft 259179sec inet6 fe80::d4e3:dbff:fef5:f224/64 scope link valid_lft forever preferred_lft forever 4: wlx60fb005126f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 60:fb:00:51:26:f0 brd ff:ff:ff:ff:ff:ff This is what the network status looks like after a reboot: $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host noprefixroute valid_lft forever preferred_lft forever 2: end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether d6:e3:db:f5:f2:24 brd ff:ff:ff:ff:ff:ff inet 192.168.100.124/24 metric 100 brd 192.168.100.255 scope global dynamic end0 valid_lft 258362sec preferred_lft 258362sec inet6 fe80::d4e3:dbff:fef5:f224/64 scope link valid_lft forever preferred_lft forever Nothing helps other than unplugging the power cable and plugging it back in. Tried the following images: Armbian_24.8.1_Bananapim2pro_bookworm_current_6.6.47_minimal.img.xz Armbian_24.5.3_Bananapim2pro_bookworm_current_6.6.36_minimal.img.xz Armbian_24.2.1_Bananapim2pro_bookworm_current_6.6.16.img.xz Outputs of armbianmonitor -U are in attachment. wifi_ok.txt wifi_no.txt