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I'm experiencing issues with my WiFi adapter on Debian. It appears I'm losing over 60% of packets, which is significantly impacting my internet connection.

Here is the relevant information from my system:

System information: Linux debian 6.1.0-1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.4-1 (2023-01-07) x86_64 GNU/Linux

WiFi Adapter Information: ($ lspci -nnk | grep -iA2 net)

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)

    Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:3909]
    
    Kernel driver in use: r8169
    
    Kernel modules: r8169

03:00.0 Network controller [0280]: MEDIATEK Corp. Device [14c3:7961]

    DeviceName: Realtek RTL8111E Ethernet LOM
    
    Subsystem: Lenovo Device [17aa:e0bc]
    
    Kernel driver in use: mt7921e

Driver Information: ($ lsmod)

...

mt7921e                28672  0

mt7921_common          94208  1 mt7921e

...

​

I'm using a simple ping to www.google.com to monitor packet loss. Here are the results I'm getting:

--- www.google.com ping statistics ---
60 packets transmitted, 23 received, 61.6667% packet loss, time 130309ms
rtt min/avg/max/mdev = 16.013/121.327/1061.404/288.178 ms, pipe 2

​

I've tried reinstalling the driver but the issue persists.

Also tried a few weeks ago to disable power management as suggested here and at first it seemed to improve things a bit, but it might have just been my impression because now the power management is disabled and I'm still getting this results.

I've also checked if other devices had also a high packet loss at the same distance but it didn't: a Windows 11 laptop next to this Lenovo losses 0% of the packets using the same ping.

Has anyone experienced something similar or has any suggestions on how to fix this issue?

Thank you in advance for any help you can provide.

Joaquim Mascarell
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  • Which driver (and how) did you reinstall it? Check in kernel log, if you have some hints (e.g. recommending loading a firmware). Also Linux may be more "stupid" (so you may need to configure yourself a better channel, if the actual channel is too busy). Or with a small band, or small packets. But all of this is not about programming (so outside this site), and it may become complex (depending the level of control you want) – Giacomo Catenazzi Jun 20 '23 at 12:50
  • At first, I updated the kernel to version 6.1 because I couldn't get the WiFi to work with any driver. Then I tried reinstalling the one that seems to be in use, the mt7921e. Another thing that is unclear to me is whether I'm actually using the correct driver for the device 14c3:7961. In theory, this corresponds to the MediaTek card, yet the name Realtek appears. Apparently it should work fine in debian 11: https://linux-hardware.org/?id=pci:14c3-7961-17aa-e0bc – Joaquim Mascarell Jun 20 '23 at 22:00

0 Answers0