Possible network card failure?

[aussieJoe12]

Hi,

My Linux Mint install works great, very fast network, but every 1-2 hours the network drops to a really slow speed, its not disconnected, wifi monitor shows connected, I can ping and traceroute to outside hosts but the delay is ridiculous, several seconds per response. I've been digging deeper and mtr (my trace route) shows the problem seems to be between my PC and router because all hosts including the router are almost uncontactable (but not quite, just very long delays) when this happens. When I restart the Network Manager ("sudo systemctl restart NetworkManager") the problem goes away. This is my work around at present and have to do this every couple of hours.

Is my network card failing or this something else?

I run Mint 19.3 and is always updated.

Thanks for any help you can provide.

[aussieJoe12]

A few more things, I completely disabled IPv6, only running v4. Do not use local DNS bind , etc. Use DNS "automatic" in the network settings. I thought it might be wireless interference, say another device taking up the wifi channel, but that wouldnt explain why the problem completely goes away when I restart the network.

[sleeper12]

Are you on wifi?

[aussieJoe12]

yes

[sleeper12]

Check iwconfig. If power management is on, turn it off:

Code: Select all

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

Reboot

[aussieJoe12]

that command says power management is off:

wlp3s0 IEEE 802.11 ESSID:"WGG_482347232T6YFG"
Mode:Managed Frequency:2.417 GHz Access Point: E4:C3:2A:98:17:BF
Bit Rate=300 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=65/70 Signal level=-45 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:11 Missed beacon:0

this commands also shows more info.

sudo lshw -C network

*-network
description: Wireless interface
product: RTL8192EE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 00
serial: 50:3e:aa:93:fa:74
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192ee driverversion=5.4.0-87-generic firmware=N/A ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:17 ioport:d000(size=256) memory:f7200000-f7203fff

[aussieJoe12]

I wonder if this still relevant 6 years later, seems Realtek was garbage hardware at some point.

https://www.reddit.com/r/linux/comments ... y_default/

[sleeper12]

You can try reloading the driver:

Code: Select all

 sudo modprobe -r rtl8192ee && sudo modprobe rtl8192ee 

[aussieJoe12]

OK, I unloaded the driver and reloaded about 10 hours ago and it seems to be working fine since then.
Why would that affect things?

[sleeper12]

OK, I unloaded the driver and reloaded about 10 hours ago and it seems to be working fine since then.
Why would that affect things?

No idea, but I hope that stays working for you.

[aussieJoe12]

Thank you for your help, much appreciated.

[sleeper12]

Glad it helped.