Very weak wifi card signal

[maya]

After the last update, the problem with the wifi driver rtw88 started. My network card is rtl8723de.
The signal of the network reaches only if I press the router close to the laptop.
Previously, there was another driver from github and on it I included the ant_sel=2 parameter, which helped in solving this problem. The rtwpci driver does not have this option and does not fix the problem in any way.
Please help

[Larry78723]

Open a Terminal (Ctrl-Alt-T), click CODE:SELECT ALL, then copy-and-paste the following as one block of text into the Terminal window (Ctrl-Shift-V)...

Code: Select all

W=wireless-info;I=/usr/local/bin;U=sudo;${U} wget -q -nv -t 5 -T 10 https://github.com/UbuntuForums/$W/raw/master/$W -P $I/;\
cd ~/Downloads;V=$W.txt;$U chmod +x $I/$W;$W>/dev/null;(inxi -Fxxxrz --usb;dkms status;modinfo -p wl;lspci -nnkD)>>$V;\
(lsusb -tv;rfkill list;(lsmod;dmesg)|egrep -i "wl|firm|fail|unab|blu|bt|bc";iwconfig;${U} os-prober;cat /proc/cmdline)>>$V;\
($U lshw -c network;mokutil --sb-state)>>$V 2>&1;tr -cd '\11\12\15\40-\176'<$V|nc termbin.com 9999;rm -f $W*.*

After a pause, a termbin.com URL will appear in the Terminal window. Paste that URL into a reply.

[hglee]

Open a Terminal (Ctrl-Alt-T), click CODE:SELECT ALL, then copy-and-paste the following as one block of text into the Terminal window (Ctrl-Shift-V)...

Code: Select all

W=wireless-info;I=/usr/local/bin;U=sudo;${U} wget -q -nv -t 5 -T 10 https://github.com/UbuntuForums/$W/raw/master/$W -P $I/;\
cd ~/Downloads;V=$W.txt;$U chmod +x $I/$W;$W>/dev/null;(inxi -Fxxxrz --usb;dkms status;modinfo -p wl;lspci -nnkD)>>$V;\
(lsusb -tv;rfkill list;(lsmod;dmesg)|egrep -i "wl|firm|fail|unab|blu|bt|bc";iwconfig;${U} os-prober;cat /proc/cmdline)>>$V;\
($U lshw -c network;mokutil --sb-state)>>$V 2>&1;tr -cd '\11\12\15\40-\176'<$V|nc termbin.com 9999;rm -f $W*.*

After a pause, a termbin.com URL will appear in the Terminal window. Paste that URL into a reply.

Hi Larry,

That particular chunk of code was made for someone with an antsy Broadcom chipset which needed a bit of hard-coding for that driver. It will produce a (harmless) error with the Realtek chipset used by the OP here. Some specific info will be missing.


The following code is generic, it seeks the driver dynamically, so generally works as expected with most any identifiable chipset:


Open a Terminal (Ctrl-Alt-T), click CODE:SELECT ALL, then copy-and-paste the following as one block of text into the Terminal window...

Code: Select all

W=wireless-info;I=/usr/local/bin;U=sudo;${U} wget -q -nv -t 5 -T 10 https://github.com/UbuntuForums/$W/raw/master/$W -P $I/;\
cd ~/Downloads;V=$W.txt;$U chmod +x $I/$W;$W>/dev/null;(inxi -Fxxxrz;modinfo `inxi -n|grep -Po 'ver: \K[^ ]+'`|grep parm)>>$V;\
(lspci -nnkD;lsusb -tv;rfkill list;(lsmod;dmesg)|egrep -i "wl|firm|fail|blu|bt|rt";${U} os-prober;cat /proc/cmdline)>>$V;\
(iwconfig;lshw -c network;dkms status;mokutil --sb-state)>>$V 2>&1;tr -cd '\11\12\15\40-\176'<$V|nc termbin.com 9999;rm -f $W*.*

After a pause, a termbin.com URL will appear in the Terminal window. Paste that URL into a reply.

[Larry78723]

@hglee, Thanks for the correction.

[maya]

Open a Terminal (Ctrl-Alt-T), click CODE:SELECT ALL, then copy-and-paste the following as one block of text into the Terminal window (Ctrl-Shift-V)...

Code: Select all

W=wireless-info;I=/usr/local/bin;U=sudo;${U} wget -q -nv -t 5 -T 10 https://github.com/UbuntuForums/$W/raw/master/$W -P $I/;\
cd ~/Downloads;V=$W.txt;$U chmod +x $I/$W;$W>/dev/null;(inxi -Fxxxrz --usb;dkms status;modinfo -p wl;lspci -nnkD)>>$V;\
(lsusb -tv;rfkill list;(lsmod;dmesg)|egrep -i "wl|firm|fail|unab|blu|bt|bc";iwconfig;${U} os-prober;cat /proc/cmdline)>>$V;\
($U lshw -c network;mokutil --sb-state)>>$V 2>&1;tr -cd '\11\12\15\40-\176'<$V|nc termbin.com 9999;rm -f $W*.*

After a pause, a termbin.com URL will appear in the Terminal window. Paste that URL into a reply.

Hi Larry,

That particular chunk of code was made for someone with an antsy Broadcom chipset which needed a bit of hard-coding for that driver. It will produce a (harmless) error with the Realtek chipset used by the OP here. Some specific info will be missing.


The following code is generic, it seeks the driver dynamically, so generally works as expected with most any identifiable chipset:


Open a Terminal (Ctrl-Alt-T), click CODE:SELECT ALL, then copy-and-paste the following as one block of text into the Terminal window...

Code: Select all

W=wireless-info;I=/usr/local/bin;U=sudo;${U} wget -q -nv -t 5 -T 10 https://github.com/UbuntuForums/$W/raw/master/$W -P $I/;\
cd ~/Downloads;V=$W.txt;$U chmod +x $I/$W;$W>/dev/null;(inxi -Fxxxrz;modinfo `inxi -n|grep -Po 'ver: \K[^ ]+'`|grep parm)>>$V;\
(lspci -nnkD;lsusb -tv;rfkill list;(lsmod;dmesg)|egrep -i "wl|firm|fail|blu|bt|rt";${U} os-prober;cat /proc/cmdline)>>$V;\
(iwconfig;lshw -c network;dkms status;mokutil --sb-state)>>$V 2>&1;tr -cd '\11\12\15\40-\176'<$V|nc termbin.com 9999;rm -f $W*.*

After a pause, a termbin.com URL will appear in the Terminal window. Paste that URL into a reply.

Here is the result:

Code: Select all

modinfo: ERROR: Module rtw_pci not found.
rmdir: failed to remove '/var/lib/os-prober/mount': Device or resource busy
https://termbin.com/3u7lf

[maya]

Anyone able to help? Otherwise, you will have to carry your computer to the trash heap

[sleeper12]

Turn power management off & see if that helps:

Code: Select all

 sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf 

Reboot