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I am facing an issue in my HP laptop which is running Ubantu 18.04.3 when I connect with my cellphone hotspot it is running fine but in case of router it is not even connecting. I have tried alot of troubleshoot for last 2 days but alas!.

FYR

sudo iwconfig 

lo1      IEEE 802.11  ESSID:"xxxxxx"  
          Mode:Managed  Frequency:2.417 GHz  Access Point: xxxxxxxxxx  
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=45/70  Signal level=-65 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:650   Missed beacon:0

This info I got when I have connected with my cellphone hotspot.

Thanks in advance.

result of below given command

lspci -knn | grep Net -A3

libkmod: ERROR ../libkmod/libkmod-config.c:656 kmod_config_parse: /etc/modprobe.d/rtl8723be.conf line 1: ignoring bad line starting with '“options'
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]
    Subsystem: Hewlett-Packard Company Device [103c:8319]
    Kernel driver in use: rtl8723de
    Kernel modules: rtl8723de
Pilot6
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Himu
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1 Answers1

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It looks like you have the "low signal" problem with one antenna Realtek devices.

Also it seems that you tried to fix it, but using a wrong fix. You have some crap in /etc/modprobe.d/rtl8723be.conf.

So run in a terminal:

sudo rm /etc/modprobe.d/rtl8723be.conf
sudo tee /etc/modprobe.d/rtl8723de.conf <<< "options rtl8723de ant_sel=1"

and reboot.

Be careful and don't make typos. It is better to copy and paste the commands. You were using wrong quotes in a previous command.

“ is not the same as ".

Pilot6
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  • Thanks a lot dear. My problem is solved by the same command as suggested by you instead I used ant_sel=2 . Actually I had used same troubleshoot earliar also but with typo as you mentioned earliar. Big thanks again :-) – Himu Jan 20 '20 at 18:04
  • That was not same. You used rtl8732be instead of rtl8723de. – Pilot6 Jan 20 '20 at 18:08