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Thread: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

  1. #1
    Join Date
    May 2019
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    Unhappy Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    My laptop is HP Pavilion 15 p077. I cannot use my internal WiFi adapter very well. When I'm entering in other rooms, my WiFi is not connecting. So I bought TP link TL-WN725N. But problem is not gone. When I used Windows, I used my WiFi. What's the problem? I didn't found my solution in any of topics.
    How can I use either internal or external WiFi adapter without any problem?
    Output of lspci -nnk | grep -A3 0280


    08:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:2230]
    Kernel driver in use: wl
    Kernel modules: wl

  2. #2
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    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    @chili555 Please help me

  3. #3
    Join Date
    Aug 2005
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    South Carolina, USA
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    24,893
    Distro
    Ubuntu 19.04 Disco Dingo

    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    I just noticed your post. Sorry for the delay.

    With the USB wireless detached, please run:
    Code:
    sudo iw reg get 
    sudo iwlist scan
    And post the results.

    For the scan command, I am only interested in your own network. Please redact the MAC address of your router like this:
    Code:
    Cell 01 - Address: XXXX
                        Channel:149
                        Frequency:5.745 GHz (Channel 149)
                        Quality=58/70  Signal level=-52 dBm  
                        Encryption key:on
                        ESSID:"GBR5"
                        Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                                  36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=00000327d5fce609
                        Extra: Last beacon: 580ms ago
                        <snip>
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  4. #4
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    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    Thanks for your reply @chili555
    Here is my results

    sudo iw reg get

    Code:
    globalcountry AZ: DFS-ETSI
        (2402 - 2482 @ 40), (N/A, 20), (N/A)
        (5170 - 5250 @ 80), (N/A, 18), (N/A), AUTO-BW
        (5250 - 5330 @ 80), (N/A, 18), (0 ms), DFS, AUTO-BW


    sudo iwlist scan


    Code:
    Cell 02 - Address: D8:5D:4C:B3:A0:F4                    Channel:7
                        Frequency:2.442 GHz (Channel 7)
                        Quality=54/70  Signal level=-56 dBm  
                        Encryption key: on
                        ESSID:"Nabizade WiFi"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                                  9 Mb/s; 12 Mb/s; 18 Mb/s
                        Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=0000000000000000
                        Extra: Last beacon: 376288ms ago
                        IE: Unknown: 000D4E6162697A6164652057694669
                        IE: Unknown: 010882848B960C121824
                        IE: Unknown: 030107
                        IE: Unknown: 2A0104
                        IE: Unknown: 32043048606C
                        IE: WPA Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (1) : TKIP
                            Authentication Suites (1) : PSK
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : TKIP
                            Pairwise Ciphers (1) : TKIP
                            Authentication Suites (1) : PSK
    NOTE: I'm near the my Own network. So I can use it's now, if it is needed I can move away

  5. #5
    Join Date
    Aug 2005
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    24,893
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    Ubuntu 19.04 Disco Dingo

    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    Wow! Everything that can be set to make your wireless perform poorly is here in one place!

    First, I have worked on more than one case where a space in the name of the SSID, usually the router, made connecting difficult. I suggest that you rename the router to something like NabizadeWiFi; that is, with no space in the name.

    Next, check the settings in the router. WPA2-AES is preferred; not any WPA and WPA2 mixed mode and certainly not TKIP. Most wireless drivers and old Chili hate hate hate TKIP!

    Second, if your router is capable of N speeds, you may have better connectivity with a channel width of 20 MHz in the 2.4 GHz band instead of automatic 20/40 MHz, although it is likely to affect N speeds. I also have better luck with a fixed channel, either 1, 6 or 11, rather than automatic channel selection. Also, be certain the router is not set to use N speeds only; auto B, G and N is preferred. After making these changes, reboot the router.

    Next, post back to tell us if there is any improvement.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  6. #6
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    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    Now my settings looks like in screenshot, in 2-3 hours I will test and reply to this post if there can be changed please inform me
    Last edited by jeremy31; May 19th, 2019 at 02:51 PM. Reason: removed image link

  7. #7
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    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    Tested new settings, not success result Not sure it's a router problem, cause when I used Windows and phones in the home is catching Wireless very good

    Code:
              Cell 02 - Address: D8:5D:4C:B3:A0:F4                    Channel:11
                        Frequency:2.462 GHz (Channel 11)
                        Quality=43/70  Signal level=-67 dBm  
                        Encryption key:on
                        ESSID:"NabizadeWiFi"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                                  9 Mb/s; 12 Mb/s; 18 Mb/s
                        Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=0000000000000000
                        Extra: Last beacon: 31808ms ago
                        IE: Unknown: 000C4E6162697A61646557694669
                        IE: Unknown: 010882848B960C121824
                        IE: Unknown: 03010B
                        IE: Unknown: 2A0104
                        IE: Unknown: 32043048606C
                        IE: WPA Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK

  8. #8
    Join Date
    Aug 2005
    Location
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    Distro
    Ubuntu 19.04 Disco Dingo

    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    You have posted for the world to see your WPA2 password! Please change it immediately.

    Your settings look very good, however the signal strength is still low:
    Cell 02 - Address: D8:5D:4C:B3:A0:F4 Channel:11
    Frequency:2.462 GHz (Channel 11)
    Quality=43/70 Signal level=-67 dBm
    Encryption key:on
    ESSID:"NabizadeWiFi"
    Is the signal strength also low in Windows?

    I wonder if both of the antenna connections are securely attached. I suspect that the Windows driver has the ability to sense and switch connections; I suspect that the Ubuntu driver does not.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  9. #9
    Join Date
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    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    My router is located on the 2nd floor, and İ catched it and worked with it perfectly in 1st floor kitchen, also my phone is catching from the 100m distance, but with Ubuntu i cannot catch it in neighbour room. Please write me guide to remove all wireless drivers from my system, and wrote new eligible driver for my wireless adapter, or guide to my usb wireless adapter, i wonder i have done all wireless driver guides.i need clean driver, may be it can help me to resolve this problem.
    Thanks chili555 for your help

  10. #10
    Join Date
    May 2019
    Beans
    10

    Re: Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

    My router is located on the 2nd floor, and İ catched it and worked with it perfectly in 1st floor kitchen, also my phone is catching from the 100m distance, but with Ubuntu i cannot catch it in neighbour room. Please write me guide to remove all wireless drivers from my system, and wrote new eligible driver for my wireless adapter, or guide to my usb wireless adapter, i wonder i have done all wireless driver guides.i need clean driver, may be it can help me to resolve this problem.
    Thanks chili555 for your help

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