wifi rtl8821ae not work, F27 and F29, live usb

asked 2018-12-29 00:46:44 -0600

eexpss gravatar image

updated 2018-12-29 00:49:18 -0600

I try a live usb disk on a laptop. The wifi does not work.

[liveuser@localhost drivers]$ lspci|grep Wireless
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
$ find /sys/bus/pci/drivers/ | grep '03:00'
/sys/bus/pci/drivers/rtl8821ae/0000:03:00.0
$ lsmod | grep rtl8821ae
rtl8821ae             225280  0
btcoexist             122880  1 rtl8821ae
rtl_pci                28672  1 rtl8821ae
rtlwifi                77824  3 rtl_pci,btcoexist,rtl8821ae
mac80211              753664  3 rtl_pci,rtlwifi,rtl8821ae

so driver is ok. dmesg show no error about wifi. At first, the wlp3s0 is down by default, after up it, it can scanning, still can not work.

$ ifconfig|grep 802
$ iwconfig
lo        no wireless extensions.

wlp3s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:on         

enp4s0    no wireless extensions.
$ sudo su
# iwlist scanning
lo        Interface doesn't support scanning.

enp4s0    Interface doesn't support scanning.

wlp3s0    Interface doesn't support scanning : Network is down

# ifconfig wlp3s0 up

# iwlist scanning|grep eexp
                    ESSID:"padavan-eexp"
# iwconfig wlp3s0 essid "padavan-eexp"
# iwconfig wlp3s0
wlp3s0    IEEE 802.11  ESSID:"padavan-eexp"  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:on
# iwconfig wlp3s0 key s:11001100
Error for wireless request "Set Encode" (8B2A) :
    SET failed on device wlp3s0 ; Invalid argument.

you can see, can not setup password. I have try F27 and F29 live usb disk (pictures below, 2 version here). the Wifi GUI show this, but the deivce is really here. The switch of wifi does nothing. pls help.

image description image description

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