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Banana Pi M2 Pro - WiFi does not works after reboot (rtl8821cu)

v-tal

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in Banana Pi M2 Pro

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v-tal

v-tal

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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

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v-tal

v-tal

Posted
  • Author
Posted (edited)
Цитата

you need to configure WIFI with netplan

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]
...

 

Edited by v-tal
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  • v-tal changed the title to Banana Pi M2 Pro - WiFi does not works after reboot (rtl8821cu)

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