WIFI is so slow with Ubuntu 20.04.2 LTS in notebook HP

[ivancsir]

Hi folks, wifi on my notebook is so slow, and idk how to do, i tried all but i cant fix that. My network controller: is

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723DE 802.11b/g/n PCIe Adapter [10ec:d723]

Im missing a lot of mgbs, for example in my house i have 12 MG and my notebook received 1 MG, i cant open anything. But if i connect with ethernet, the notebook recieved all Mbit/s. Pls i need help. Thx

wireless-info.tar.gz

Look that. From 100 mgb/s.....
Captura de pantalla de 2021-06-01 17-19-40.jpg

[VMC]

nmcli d wifi

This should if indication of signal strength.

[ivancsir]

Hey bro, im now on a friend house. He have 20 mgb/s and im receiving only 10 mgb/s.

Tomba_3 is the wifi

IN-USE  BSSID              SSID           MODE   CHAN  RATE        SIGNAL  BARS>*       
        58:D9:D5:60:A3:69  Tomba_3        Infra  8     270 Mbit/s  92      ▂▄▆█>
        68:FF:7B:7E:D1:90  Tomba          Infra  8     195 Mbit/s  49      ▂▄__>
        60:32:B1:CA:1B:25  NAVARRO_EXT    Infra  11    130 Mbit/s  42      ▂▄__>
        68:FF:7B:7E:D0:13  NAVARRO        Infra  11    195 Mbit/s  32      ▂▄__>
        E0:41:36:DC:6B:EE  Speedy-DC6BEC  Infra  1     130 Mbit/s  29      ▂___>
        D8:0D:17:F3:7F:03  Martin         Infra  10    195 Mbit/s  29      ▂___>
        70:4F:57:F1:DD:0E  Galindo        Infra  2     270 Mbit/s  20      ▂___>

[ivancsir]

Someone can help me? pls

[chili555]

It appears that you have thrown everything that is suggested in various forums at this problem. Most of them are incorrect. First:

[/etc/modprobe.d/rtl8723de.conf]
options rtl8723de ant_sel=1

You are not using the driver rtl8723de. Let’s remove the file:

sudo rm /etc/modprobe.d/rtl8723de.conf

Next:

[/etc/modprobe.d/rtw_8723de.conf]
options DRIVER 11n_disable=1?

This is meaningless; let’s remove it:

sudo rm /etc/modprobe.d/rtw_8723de.conf

Next:

[/etc/modprobe.d/rtw88_8723de.conf]
options rtw88_8723de 11n_disable=1?

The driver has no such manipulable parameter; let’s remove it:

sudo rm etcmodprobe.d/rtw88_8723de.conf

Now:

libkmod: ERROR ../libkmod/libkmod-config.c:716 conf_files_filter_out: Directories inside directories are not supported: /etc/modprobe.d/50-rtl8723de.conf

You are not using the driver rtl8723de. Let’s remove the file:

sudo rm /etc/modprobe.d/50-rtl8723de.conf

You have two possibly conflicting drivers installed.

##### lsmod #############################

8723de 1695744 0
rtw88_8723de 16384 0

Let’s blacklist one and see if the performance improves:

sudo -i
echo “blacklist rtw88_8723de”  >>  /etc/modprobe.d/blacklist.conf
exit

Reboot and tell us if there is any improvement.

[ivancsir]

Hey bro, i tried all that you explain, the perfomance is the same.

[chili555]

Hey bro, i tried all that you explain, the perfomance is the same.

Let's change the blacklist:

sudo nano /etc/modprobe.d/blacklist.conf

Change the line:

blacklist rtw88_8723de

To read:

blacklist 8723de

Save (Ctrl+o followed by Enter) and exit (Ctrl+x followed by Enter) the text editor. Reboot and tell us if there is any improvement. If there is none, please run and post a new wireless_info as you did above. Please be certain that you do not accidently post the old original.

[ivancsir]

Thx for your time bro. The perfomance is the same. Wireless info attachment.
wireless-info.tar.gz

[ivancsir]

Hi, someone can help me?