I have a Lan Problem

[hightokeinyoda]

hi all, for some reason my lan driver is not working but here is where it gets a little strange my wifi is working, ill give you as much information as i can.

network UNCLAIMED
description: Ethernet controller
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:09:00.0
version: 05
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
configuration: latency=0
resources: ioport:e000(size=256) memory:fc900000-fc90ffff memory:fc910000-fc913fff


Operating System: Kubuntu 22.04
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 6.5.0-41-generic (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 5600G with Radeon Graphics
Memory: 31.1 GiB of RAM
Graphics Processor: AMD Radeon RX 6650 XT

i cant for love or money seem to get the lan connection to work but the wifi is wokring, and yes i have tried diabling wifi and i am left with no network connection.

ive tried the following

clean installing kububtu 24
clean installing kubuntu 23..10
clean installing kubuntu 22.04
dowloding from the realtek website it gives me the following error.

yoda@Yodas-PC:~/Downloads/r8168-master$ sudo ./autorun.sh
[sudo] password for yoda:

Check old driver and unload it.
Build the module and install
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
You are using: gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
Skipping BTF generation for /home/yoda/Downloads/r8168-master/src/r8168.ko due to unavailability of vmlinux
Warning: modules_install: missing 'System.map' file. Skipping depmod.
DEPMOD 6.5.0-41-generic
load module r8168
Updating initramfs. Please wait.
update-initramfs: Generating /boot/initrd.img-6.5.0-41-generic
W: Possible missing firmware /lib/firmware/amdgpu/ip_discovery.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/vega10_cap.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/sienna_cichlid_cap.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_cap.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/psp_13_0_6_ta.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/psp_13_0_6_sos.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/aldebaran_cap.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/aldebaran_sjt_mec2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/aldebaran_sjt_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/gc_9_4_3_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/gc_9_4_3_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/gc_11_0_0_toc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/sdma_4_4_2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/sienna_cichlid_mes1.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/sienna_cichlid_mes.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi10_mes.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/gc_11_0_3_mes.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/vcn_4_0_3.bin for module amdgpu
Completed.
yoda@Yodas-PC:~/Downloads/r8168-master$


has any one any idea what is going wrong with the LAN driver

[oshunluvr]

I have the exact same ethernet and no issues here. Enter this: lspci -vv and look at the Ethernet part;

27:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 04)
Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8125 2.5GbE Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 39
IOMMU group: 27
Region 0: I/O ports at f000 [size=256]
Region 2: Memory at fc800000 (64-bit, non-prefetchable) [size=64K]
Region 4: Memory at fc810000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169​

[oshunluvr]

RTL8125 been supported by the kernel since 5.4

[hightokeinyoda]

I have the exact same ethernet and no issues here. Enter this: lspci -vv and look at the Ethernet part;

27:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 04)
Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8125 2.5GbE Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 39
IOMMU group: 27
Region 0: I/O ports at f000 [size=256]
Region 2: Memory at fc800000 (64-bit, non-prefetchable) [size=64K]
Region 4: Memory at fc810000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169​

here is the ethernet portion of the output

09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. RTL8125 2.5GbE Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 255
IOMMU group: 13
Region 0: I/O ports at e000 [size=256]
Region 2: Memory at fc900000 (64-bit, non-prefetchable) [size=64K]
Region 4: Memory at fc910000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Address: 0000000000000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 26.000W
DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s (ok), Width x1 (ok)
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR+
10BitTagComp- 10BitTagReq- OBFF Via message/WAKE#, ExtFmt- EETLPPrefix-
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS- TPHComp+ ExtTPHComp-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- OBFF Disabled,
AtomicOpsCtl: ReqEn-
LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-
EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-
Retimer- 2Retimers- CrosslinkRes: unsupported
Capabilities: [b0] MSI-X: Enable- Count=32 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000800
Capabilities: [d0] Vital Product Data
pcilib: sysfs_read_vpd: read failed: No such device
Not readable
Capabilities: [100 v2] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
Capabilities: [148 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [168 v1] Device Serial Number 01-00-00-00-68-4c-e0-00
Capabilities: [178 v1] Transaction Processing Hints
No steering table available
Capabilities: [204 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [20c v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=150us PortTPowerOnTime=150us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=0ns
L1SubCtl2: T_PwrOn=10us
Capabilities: [21c v1] Vendor Specific Information: ID=0002 Rev=4 Len=100 <?>

[hightokeinyoda]

and the portion of the output relating to my Onboard Wireless

08:00.0 Network controller: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter
Subsystem: AzureWave Device 4680
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 102
IOMMU group: 13
Region 0: Memory at e0300000 (64-bit, prefetchable) [size=1M]
Region 2: Memory at e0400000 (64-bit, prefetchable) [size=16K]
Region 4: Memory at e0404000 (64-bit, prefetchable) [size=4K]
Capabilities: [80] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 26.000W
DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <8us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s (ok), Width x1 (ok)
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR+
10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt+ EETLPPrefix-
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS- TPHComp- ExtTPHComp-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- OBFF Disabled,
AtomicOpsCtl: ReqEn-
LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-
EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-
Retimer- 2Retimers- CrosslinkRes: unsupported
Capabilities: [e0] MSI: Enable+ Count=1/32 Maskable+ 64bit+
Address: 00000000fee00000 Data: 0000
Masking: fffffffe Pending: 00000000
Capabilities: [f8] Power Management version 3
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [100 v1] Vendor Specific Information: ID=1556 Rev=1 Len=008 <?>
Capabilities: [108 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [110 v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=3us PortTPowerOnTime=28us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=0ns
L1SubCtl2: T_PwrOn=10us
Capabilities: [200 v2] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
AERCap: First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap- ECRCChkEn-
MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
HeaderLog: 00000000 00000000 00000000 00000000
Kernel driver in use: mt7921e
Kernel modules: mt7921e

[oshunluvr]

What's this?

Kernel driver in use: mt7921e
Kernel modules: mt7921e

Did you add that? The correct driver is:

Kernel driver in use: r8169
Kernel modules: r8169​

[oshunluvr]

warning: the compiler differs from the one used to build the kernel

load module r8168

I'm unclear as to why your installing the wrong driver when the correct one is built into the kernel.

[hightokeinyoda]

What's this?

Kernel driver in use: mt7921e
Kernel modules: mt7921e

Did you add that? The correct driver is:

Kernel driver in use: r8169
Kernel modules: r8169​

the mt7921e is the wireless module that is built into my motherbord

the lan driver was working before the update to 6.0.5.35-generic and now it does not so i have been searching for the correct driver for this lan port which is bunled into my motherboard the ASUS TUF GAMING B550-PLUS WiFi II AMD B550 WiFi 6 ATX Motherboard

[oshunluvr]

Oh, I see. I didn't realize you included info from the wifi card. It's really not relevant at all to why your Ethernet port isn't working.

Well, based on what you posted, IMO the kernel is NOT assigning the any driver to your Ethernet port.

If it just started with the -35 kernel, then boot to an earlier one. No need to "search" for anything, just boot to a working kernel.

I would uninstall the r8168 driver and undo whatever you did with it as I don't believe that's the right one to attempt to use and will probably cause problems later.

It's odd that my, same Ethernet port works fine with -35. Are you sure you installed all the kernel add-ons?

stuart@office:~$ dpkg -l |grep 6.5.0-35 |awk '{print $2}'
linux-headers-6.5.0-35-generic
linux-hwe-6.5-headers-6.5.0-35
linux-image-6.5.0-35-generic
linux-modules-6.5.0-35-generic
linux-modules-extra-6.5.0-35-generic​

[claydoh]

. hi all, for some reason my lan driver is not working but here is where it gets a little strange my wifi is working, ill give you as much information as i can.

Has it ever worked?

Wifi is completely unrelated to Ethernet in both hardware and drivers.

Have you looked at your BIOS settings for anything related to the hardware? Is your BIOS up to date? It not working on three Ubuntu releases using two different kernel versions points at a hardware problem, so a BIOS setting might be the first thing to investigate.

. here is the ethernet portion of the output

Note that your output shows no driver in use, compared to what it shows for the WiFi card. Compiling and installing the likely outdated driver code may have caused that. I'm not sure if this driver installs to the same location as the built in driver or not, so I can't say if it replaced that original driver or not. Uninstalling the new may not restore the original.

[hightokeinyoda]

Has it ever worked?

Wifi is completely unrelated to Ethernet in both hardware and drivers.

Have you looked at your BIOS settings for anything related to the hardware? Is your BIOS up to date? It not working on three Ubuntu releases using two different kernel versions points at a hardware problem, so a BIOS setting might be the first thing to investigate.




Note that your output shows no driver in use, compared to what it shows for the WiFi card. Compiling and installing the likely outdated driver code may have caused that. I'm not sure if this driver installs to the same location as the built in driver or not, so I can't say if it replaced that original driver or not. Uninstalling the new may not restore the original.

the lan port works flawlesly under windows 10 & 11 and i can confirm that its works using the Kubuntu Live CD's

then a system update seems to make the lan disapear.

now it is quite posible that in my attempt to fix what apeard to be a missing driver that i may have removed the one that came with the system which had stopped working and the ones i have tried to install are for a lower kenrel.

with these points in mind ive been thinking.

would a purge of the 6.5.0-35-generic kernel followed by a reinstalation of said kernel help

it seems odd that apt would remove a vital driver if no others was to be installed in its place or am i missing somthing here.

i maye be better of doing a clean install or do you guys think this is salvageable

[Snowhog]

First, as oshunluvr said/asked, boot to a prior kernel to ensure/verify that all works as expected. Assuming that it does, you could then purge the suspected kernel (while still in the booted 'prior' kernel) and then reinstall it and then reboot into it and test.

[hightokeinyoda]

First, as oshunluvr said/asked, boot to a prior kernel to ensure/verify that all works as expected. Assuming that it does, you could then purge the suspected kernel (while still in the booted 'prior' kernel) and then reinstall it and then reboot into it and test.

sorry i was ment to do that but i totaly forgot, my advanced options for Kubunutu menu in grub is only showing kernel 6.5.0.35-generic abd 6.5.0.41-generic along with thier respective recovery modes.

alas i tried both kernels to be sure and still no lan driver been picked up

Kernel 6.50.0.41-generic is giving this output for sudo lshw -c network

*-network UNCLAIMED
description: Ethernet controller
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:09:00.0
version: 05
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list
configuration: latency=0
resources: ioport:e000(size=256) memory:fc900000-fc90ffff memory:fc910000-fc913fff
yoda@Yodas-PC:~$

i suspect that in my misguided attempts to fix this problem i may have made a whoper of a mess i apreciate all the help i am reciving this is one of the qualitys that make Kubuntu a user friendly distro.

is there any other routes of investigation as to how to fix this?

Kind Regarda

Yoda

[hightokeinyoda]

well this is strange i downloaded the driver from the realtek website and ran the installer script on the 6.5.0-41-generic kernel and now the ethernet is working.

Thanks again for all your help

[Snowhog]

This question/answer is just under two years old, but does involve a non-working RTL8125 ethernet controller in Ubuntu: https://askubuntu.com/questions/1423...th-kernel-5-15 The answer may be worth pursuing.