Slow internet on dual boot system with Windows

aceman · 2024-09-04 21:03:53

I have gigabit internet and I have a dualboot install with windows and arch linux. On my windows install I have normal internet speeds, 1000mbits/s. On my arch install I have download speed of 2.37 mbit/s and upload of 3.33 mbit/s. I'm using the driver for the realtek r8125. This is my ethtool output:

settings for enp42s0:
	Supported ports: [ TP ]
	Supported link modes:   10baseT/Half 10baseT/Full
	                       100baseT/Half 100baseT/Full
	                       1000baseT/Full
	                       2500baseT/Full
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  10baseT/Half 10baseT/Full
	                       100baseT/Half 100baseT/Full
	                       1000baseT/Full
	                       2500baseT/Full
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Link partner advertised link modes:  10baseT/Half 10baseT/Full
	                                    100baseT/Half 100baseT/Full
	                                    1000baseT/Full
	Link partner advertised pause frame use: Symmetric
	Link partner advertised auto-negotiation: Yes
	Link partner advertised FEC modes: Not reported
	Speed: 1000Mb/s
	Duplex: Full
	Auto-negotiation: on
	Port: Twisted Pair
	PHYAD: 0
	Transceiver: internal
	MDI-X: on
	Supports Wake-on: pumbg
	Wake-on: g
        Current message level: 0x00000033 (51)
                               drv probe ifdown ifup
	Link detected: yes

I have already tried reinstalling the driver, disabling ipv6 and setting the MTU to 1500 manually,

seth · 2024-09-04 21:21:12

See the 3rd link below. Mandatory.
Disable it (it's NOT the BIOS setting!) and reboot windows and linux twice for voodo reasons.

Then please post the output of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

aceman · 2024-09-04 21:36:37

 
find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
bluetooth-autoconnect.service            | bluetooth.service.wants
bluetooth.service                        | bluetooth.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.nm-dispatcher.service | system
dbus-org.freedesktop.timesync1.service   | system
display-manager.service                  | system
fstrim.timer                             | timers.target.wants
getty@tty1.service                       | getty.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pipewire-pulse.socket                    | sockets.target.wants
pipewire-session-manager.service         | user
pipewire.socket                          | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
systemd-timesyncd.service                | sysinit.target.wants
systemd-userdbd.socket                   | sockets.target.wants
wireplumber.service                      | pipewire.service.wants
xdg-user-dirs-update.service             | default.target.wants

seth · 2024-09-04 21:42:13

No concurrent services - if it's not the hibernating ("fast starting") windows, check the system journal for r8125 related errors.
r8169 doesn't (properly) support your device?

aceman · 2024-09-04 21:52:40

I have the same issue with r8169/r8168. The system journal doesn't seem to contain any errors.

: r8168 Gigabit Ethernet driver 8.053.00-NAPI loaded
r8125 Ethernet controller driver 9.013.02-NAPI loaded

seth · 2024-09-04 22:09:56

Why are both drivers loaded? Which one's actually driving the HW?
Please post your complete system journal for the boot:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

aceman · 2024-09-05 15:15:02

libkmod: kmod_config_parse: /etc/modprobe.d/blacklist.conf line 1: ignoring bad line starting with '8'
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7c91]
	Kernel driver in use: r8168
	Kernel modules: r8169, r8168
2a:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 04)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7c91]
	Kernel driver in use: r8125
	Kernel modules: r8169, r8125

link to system journal for boot:

https://termbin.com/iwc2

seth · 2024-09-05 15:30:59

/etc/modprobe.d/blacklist.conf line 1: ignoring bad line starting with '8'

Please post that file - the r8168 nic doesn't show up in the wiki (the device is there but not assigned)
The 8125 one flickers

sep 05 18:59:39 acemanarch kernel: r8125: enp42s0: link up
sep 05 19:00:24 acemanarch kernel: r8125: enp42s0: link down
sep 05 19:00:27 acemanarch kernel: r8125: enp42s0: link up
sep 05 19:01:13 acemanarch kernel: r8125: enp42s0: link down
sep 05 19:01:16 acemanarch kernel: r8125: enp42s0: link up
sep 05 19:01:31 acemanarch kernel: r8125: enp42s0: link down
sep 05 19:01:34 acemanarch kernel: r8125: enp42s0: link up
sep 05 19:02:21 acemanarch kernel: r8125: enp42s0: link down
sep 05 19:02:24 acemanarch kernel: r8125: enp42s0: link up

Frequency doesn't smell like some power saving and there're also no kernel errors - loose cable?

Edit: though 3x ~45s and only once 15s - the singleton might have been manual intervention and 45s the rythm?

Last edited by seth (2024-09-05 15:34:15)

aceman · 2024-09-05 17:54:08

cat /etc/modprobe.d/blacklist.conf

blacklist r8125
blacklist r8168

I disconnected the r8125 cable from the pc and forced the kernel to load r8169
This is the dmesg output

[    7.431214] r8168 0000:07:00.0 enp7s0: renamed from eth0
[    8.188477] enp7s0: 0xffffc9000057f000, d8:bb:c1:36:68:91, IRQ 73
[   11.292484] r8168: enp7s0: link up
[   12.293560] r8168: enp7s0: link down
[   15.346163] r8168: enp7s0: link up
[  225.467387] r8169 0000:07:00.0 enp7s0: renamed from eth0
[  225.770322] r8169 0000:07:00.0 enp7s0: Link is Down
[  228.562917] r8169 0000:07:00.0 enp7s0: Link is Up - 1Gbps/Full - flow control rx/tx
[  228.564615] r8169 0000:07:00.0 enp7s0: Link is Up - 1Gbps/Full - flow control rx/tx

When I set my link negotiation speed to autmatic networkmanager defaults to 100mbits/s
When I do a speedtest through an online site it says i have 900mbit's download speed
when I download something via steam or run speedtest via the terminal it still says 3mbits/s
Could It be that my networkmanager settings interfere with my ethtool settings?

Last edited by aceman (2024-09-05 17:57:01)

seth · 2024-09-05 18:57:57

The /etc/modprobe.d/blacklist.conf would not cause the libkmod: kmod_config_parse: /etc/modprobe.d/blacklist.conf line 1: ignoring bad line starting with '8' error and would also not allow the r8125 module to be loaded for the journal in #7
Did you change the file (and forget to regenerate the initramfs)?

Don't flail around: identify which NIC to focus on, make sure it's connected and relevant (ip a; ip r), check the ethtool output for it and report on that.

This is the dmesg output

That's "RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller" - you're aware that you've two ethernert controllers?

When I set my link negotiation speed to autmatic networkmanager defaults to 100mbits/s

Please don't paraphrase, post the ethtool output(s)
But that yells "cable".

When I do a speedtest through an online site it says i have 900mbit's download speed

See above, what "online site", do you even pay for/expet Gbit WAN?
Get ABBS - there's a wget driven speedtest for some linode hosts. Pick one and post the results, verbatim.
But again: step back, identify the concerned NIC, make sure it's in use - and also check what you're actually using on windows.

Do you have cables plugged in both NICs? What's the purpose of the setup?

Arch Linux

#1 2024-09-04 21:03:53

Slow internet on dual boot system with Windows

#2 2024-09-04 21:21:12

Re: Slow internet on dual boot system with Windows

#3 2024-09-04 21:36:37

Re: Slow internet on dual boot system with Windows

#4 2024-09-04 21:42:13

Re: Slow internet on dual boot system with Windows

#5 2024-09-04 21:52:40

Re: Slow internet on dual boot system with Windows

#6 2024-09-04 22:09:56

Re: Slow internet on dual boot system with Windows

#7 2024-09-05 15:15:02

Re: Slow internet on dual boot system with Windows

#8 2024-09-05 15:30:59

Re: Slow internet on dual boot system with Windows

#9 2024-09-05 17:54:08

Re: Slow internet on dual boot system with Windows

#10 2024-09-05 18:57:57

Re: Slow internet on dual boot system with Windows

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