01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev
0e)
Kernel driver in use: r8168
Kernel modules: r8168
----------------------
You probably should mention that you are using an external kernel module
(r8168). What happens when you use the built-in r8169 module?
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2122101
Title:
lan limit
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have a 200 Mbps internet connection, but when I'm using the latest
kernel, my LAN speed is limited to below 100 Mbps (around 20–80 Mbps).
However, ethtool shows the link speed as 1 Gbps and full duplex. When
I switch back to the base (older) kernel, everything returns to normal
and I can reach the full 200 Mbps speed again.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-31-generic 6.8.0-31.31
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: cubelake 1495 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 5 15:25:10 2025
InstallationDate: Installed on 2025-09-03 (2 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: LENOVO 10VHS08Q00
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/fish
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 simpledrmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-31-generic
root=UUID=e2629c80-ca8c-4531-b8b7-f73f35e821fe ro quiet splash
processor.max_cstate=5 idle=nomwait irqpoll iommu=soft vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-6.8.0-31-generic N/A
linux-backports-modules-6.8.0-31-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.17
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/04/2018
dmi.bios.release: 0.34
dmi.bios.vendor: LENOVO
dmi.bios.version: M1XKT34A
dmi.board.name: 3130
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN 3305201596252
dmi.chassis.asset.tag: 000134535
dmi.chassis.type: 35
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 0.12
dmi.modalias:
dmi:bvnLENOVO:bvrM1XKT34A:bd09/04/2018:br0.34:efr0.12:svnLENOVO:pn10VHS08Q00:pvrThinkCentreM715q:rvnLENOVO:rn3130:rvrSDK0J40697WIN3305201596252:cvnLENOVO:ct35:cvrNone:skuLENOVO_MT_10VH_BU_Think_FM_ThinkCentreM715q:
dmi.product.family: ThinkCentre M715q
dmi.product.name: 10VHS08Q00
dmi.product.sku: LENOVO_MT_10VH_BU_Think_FM_ThinkCentre M715q
dmi.product.version: ThinkCentre M715q
dmi.sys.vendor: LENOVO
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