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Thread: Realtek RTL8822be Wi-Fi Problems

  1. #1
    Join Date
    Sep 2019
    Beans
    2

    Realtek RTL8822be Wi-Fi Problems

    Hi guys,

    I've been through I think almost all the threads trying to get this RTL8822be card working on my Asus X510QA. Secure Boot is disabled, and the funny thing is that the card was working with the Live USB version but now doesn't work when Ubuntu 19.04 is installed. The card appears, but it is unable to find any networks.

    Some other posts have recommended that I:

    • Disable Secure Boot [done]
    • Blacklist r882be [tried, didn't work]
    • Install drivers from synthtc/rtlwifi-next [failed with errors]


    I was pretty sure some posts had mentioned that this card was supposed to work out of the box in 18.04 (https://askubuntu.com/questions/9941...-wifi-problems), but I tried both 18.04 and 19.04 and the card doesn't work with either.

    So now I'm lost and was wondering if I could get any help!

    Here's some relevant info:

    Code:
    lshw -C network
    Code:
      *-network                 
           description: Wireless interface
           product: RTL8822BE 802.11a/b/g/n/ac WiFi adapter
           vendor: Realtek Semiconductor Co., Ltd.
           physical id: 0
           bus info: pci@0000:01:00.0
           logical name: wlp1s0
           version: 00
           serial: dc:f5:05:da:a0:25
           width: 64 bits
           clock: 33MHz
           capabilities: bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=rtw_pci driverversion=5.0.0-25-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
           resources: irq:25 ioport:e000(size=256) memory:fea00000-fea0ffff
      *-network
           description: Wireless interface
           physical id: 1
           bus info: usb@2:4
           logical name: wlxc46e1f2551ce
           serial: c4:6e:1f:25:51:ce
           capabilities: ethernet physical wireless
           configuration: broadcast=yes driver=rtl8192cu driverversion=5.0.0-25-generic firmware=N/A ip=192.168.1.14 link=yes multicast=yes wireless=IEEE 802.11
    WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
    Code:
    lspci
    Code:
    00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Complex
    00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) I/O Memory Management Unit
    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wani [Radeon R5/R6/R7 Graphics] (rev c8)
    00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kabini HDMI/DP Audio
    00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge
    00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port
    00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge
    00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port
    00:08.0 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 1578
    00:09.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 157d
    00:09.2 Audio device: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Audio Controller
    00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 20)
    00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 49)
    00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 49)
    00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 4a)
    00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
    00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 0
    00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 1
    00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 2
    00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 3
    00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 4
    00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 5
    01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter
    Anything else I can do here?

  2. #2
    Join Date
    Aug 2019
    Beans
    3

    Re: Realtek RTL8822be Wi-Fi Problems

    You can try to follow this thread and provide the full diagnostic. There's a log for the kernel module using the dmesg command maybe it will show something

  3. #3
    Join Date
    Sep 2019
    Beans
    2

    Re: Realtek RTL8822be Wi-Fi Problems

    Thanks for the suggestion! Here's the output of wireless-info. One thing to note is I have a USB TP-Link Wifi adapter plugged in at the moment as an alternative - I believe that's the RTL8192 chip

    https://paste.ubuntu.com/p/7J6Gxf67wd/

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