Ubuntu 18.04 WiFi problem (Broadcom BCM43142)

[nabizade]

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

[nabizade]

@chili555 Please help me

[chili555]

I just noticed your post. Sorry for the delay.

With the USB wireless detached, please run:

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:

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

[nabizade]

Thanks for your reply @chili555
Here is my results

sudo iw reg get

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

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

[chili555]

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.

[nabizade]

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

[nabizade]

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

          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

[chili555]

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.

[nabizade]

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

[nabizade]

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