Networking: can't ping or ssh, high latency, timeouts

zielonek430 · 2020-06-20 17:14:49

Hi!

I have recently switched from Ubuntu to Arch on my desktop. I have configured everything according to the tutorial and everything seems up and running, however I have some issue with networking.

The problem is accessing the machine from another. Pinging usually leads to high time (> 500 ms), and often request timeouts. On the other hand, pinging another machine (rpi) averages to ~40 ms). Sometimes, pinging is not possible at all (even though Arch has access to the Internet), and then I can't ssh to it as well.

When using Arch machine, downloading sometimes fail due to request timeout, but usually the connection is OK.

I use a desktop with Wi-Fi card (Gigabyte GC-WB1733D-I, that is Intel Wireless-AC 9260), the connection is OK (same things between my laptop and RPi work fine). I will of course provide the logs that could be of use, but I don't know which exactly.

seth · 2020-06-20 19:18:27

sudo journalctl -b
find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
find /etc/systemd -type l -exec test -f {} \; -print # this will do as well if you cannot copy+paste, the rest of the command is prettyfication

zielonek430 · 2020-06-21 09:03:54

Journal: https://pastebin.com/b6yRghvQ
Systemd: https://pastebin.com/s08hM5Vq

seth · 2020-06-21 11:13:42

No conflicting services, not disconnect.
Try "power_save=0 11n_disable=1", https://bbs.archlinux.org/viewtopic.php … 1#p1782201
https://wiki.archlinux.org/index.php/Ke … le_options

zielonek430 · 2020-06-21 11:30:48

Unfortunately, no change. Does it still apply to new kernel versions? (5.7.2 here)

EDIT: Just checked to rule out my network and hardware issues - on the machine with Arch, when I boot to Windows there is no problem with connections (steady ping ~15 ms)

Last edited by zielonek430 (2020-06-21 11:43:35)

seth · 2020-06-21 12:06:26

http://wiki.archlinux.org/index.php/Dua … ibernation

As for the parameters, check "systool -vm iwlwifi" on whether they apply (might fail if you added them via modprobe.conf, the module is loaded out of the initramfs and you didn't rebuild the latter)

zielonek430 · 2020-06-21 12:23:45

Is there something that may influence Internet connection when dual-booting? I have no trouble with two OSes on my PC other than Wi-Fi connection on Arch, am I missing something?

I manually applied those params (`sudo modprobe`), tried wifi connection straight after, after restarting wi-fi and on different network. No change

seth · 2020-06-21 13:49:57

Windows hibernates by default (even if you "shut down") and leaves the HW in an undefined state, messing w/ the init - it causes all sorts of weird issues and somehow™ disfunctional wifi is a common one.

I manually applied those params

Did you unload the module beforehand?

zielonek430 · 2020-06-21 16:16:35

seth wrote:

Windows hibernates by default (even if you "shut down") and leaves the HW in an undefined state, messing w/ the init - it causes all sorts of weird issues and somehow™ disfunctional wifi is a common one.

That made me wonder, because previously I was using the same Windows installation with Ubuntu and no problem occurred, but I double-checked it and fast startup was already disabled

seth wrote:

Did you unload the module beforehand?

I did (I unloaded iwlmvm -> set parameters -> loaded iwlmvm and then checked)

Last edited by zielonek430 (2020-06-21 16:17:17)

seth · 2020-06-29 06:11:38

Seems the firmware broke, https://bbs.archlinux.org/viewtopic.php?id=256970

Arch Linux

#1 2020-06-20 17:14:49

Networking: can't ping or ssh, high latency, timeouts

#2 2020-06-20 19:18:27

Re: Networking: can't ping or ssh, high latency, timeouts

#3 2020-06-21 09:03:54

Re: Networking: can't ping or ssh, high latency, timeouts

#4 2020-06-21 11:13:42

Re: Networking: can't ping or ssh, high latency, timeouts

#5 2020-06-21 11:30:48

Re: Networking: can't ping or ssh, high latency, timeouts

#6 2020-06-21 12:06:26

Re: Networking: can't ping or ssh, high latency, timeouts

#7 2020-06-21 12:23:45

Re: Networking: can't ping or ssh, high latency, timeouts

#8 2020-06-21 13:49:57

Re: Networking: can't ping or ssh, high latency, timeouts

#9 2020-06-21 16:16:35

Re: Networking: can't ping or ssh, high latency, timeouts

#10 2020-06-29 06:11:38

Re: Networking: can't ping or ssh, high latency, timeouts

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