No internet connection via ethernet

I have been using Manjaro linux KDE for almost 2 years without any issues. Yesterday, I decided to do a clean install. The problem is that I have no internet connection via ethernet.
Things tried:
1)https://wiki.manjaro.org/index.php?title=Setup_Internet_DHCP
2)https://wiki.manjaro.org/index.php?title=Setup_Static_IP

I am on Manjaro KDE 17.1.4. Network driver is r8168 and kernel version 4.14 (LTS).
Please note that that I have internet with the live cd and that my ethernet cable and router is fine, because windows 10, which is installed alongside with linux, have internet access.

Installing new packages and kenrels is not a problem, because I know how to mount and apply changes through terminal at my live-cd.

Thanks in advance.

I assume you have network, via (r8168)ethernet, but after you install Manjaro KDE 17.1.4, it's gone?
you shouldn't have a problem with the r8168, unless ?.
but anyway, for starters, (if you have to boot from your live Manjaro usb/dvd), please post, from a terminal, the output of:

inxi -FGx

you can post your output here, this way:

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Here is the output from the live cd (where everything works):

System:    Host: manjaro Kernel: 4.14.16-1-MANJARO x86_64 bits: 64 gcc: 7.2.1
           Desktop: KDE Plasma 5.11.5 (Qt 5.10.0) Distro: Manjaro Linux
Machine:   Device: desktop System: Gigabyte product: N/A serial: N/A
           Mobo: Gigabyte model: F2A85X-UP4 serial: N/A BIOS: American Megatrends v: F4 date: 03/13/2013
CPU:       Quad core AMD A10-5800K APU with Radeon HD Graphics (-MCP-) arch: Piledriver rev.1 cache: 8192 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 30408
           clock speeds: max: 3800 MHz 1: 1398 MHz 2: 1399 MHz 3: 1399 MHz 4: 1398 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Bonaire XTX [Radeon R7 260X/360] bus-ID: 01:00.0
           Display Server: N/A drivers: ati,radeon (unloaded: modesetting) tty size: 188x27
Audio:     Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller driver: snd_hda_intel bus-ID: 00:14.2
           Card-2 Advanced Micro Devices [AMD/ATI] Tobago HDMI Audio [Radeon R7 360 / R9 360 OEM]
           driver: snd_hda_intel bus-ID: 01:00.1
           Sound: Advanced Linux Sound Architecture v: k4.14.16-1-MANJARO
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 94:de:80:03:22:d0
Drives:    HDD Total Size: NA (-)
           ID-1: /dev/sda model: WDC_WD10EZEX size: 1000.2GB
           ID-2: USB /dev/sdb model: Flash_Disk size: 8.2GB
Partition: ID-1: / size: 5.9G used: 157M (3%) fs: overlay dev: N/A
Sensors:   System Temperatures: cpu: 3.0C mobo: N/A gpu: 27.0
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 144 Uptime: 46 min Memory: 1300.9/7989.8MB Init: systemd Gcc sys: 7.2.1
           Client: Shell (bash 4.4.121) inxi: 2.3.56 

[EDIT]
As you can see the network driver is different
live cd - r8169
Insallation - r8168 (As shown in the settings manager)

so it works Live, but fails after installaiton.
sounds like NetworkManager screwy misconfiguration post-install.

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Excacttly

I have tried reinstalling 3 times without any success.
I have tried changing kernel version to 4.15 and updating packages - no success

Do you want the output of inxi -FGx of my installation?

sure, that won't hurt.
I also assume your network/router/... is setup DHCP?.
I'm still searching around here myself, since I've never had a problem with manjaro and r8168/8111/8169...

1 Like

Is linux414-r8168 installed?

You can try to remove it, or blacklist r8168. But check /etc/modules-load.d and /etc/modprobe.d, there might be a file which blacklist r8169 because r8168 extramodules is installed.

You also can try to manually unload r8168 and then load r8169 , to test things.

3 Likes

after trying the above, you can also try, "sudo lshw -C network", for more details, and there's a tip here to check, (if a similar file exists).

1 Like

bump
so, Did you get this resolved yet, for Manjaro KDE 17.1.4(Stable), or not? -jus curious.
aka, if you have WiFi, did that work?

1 Like

I will ckeck your suggestions later (maybe at 2-4 hours)
Right now I am busy (studying)

Thanks for your help and your interest !

1 Like

Thank you very much both of you for your effort, suggestions and your instant response.

My problem is now solved. The problem was with r8168 network driver.
As suggested, I deleted file:///etc/modprobe.d/r8169_blacklist.conf
After rebooting my machine, it automatically switched from r8168 driver to r8169.
Now everything if fine.

Your help is priceless.

4 Likes

glad to hear it's working now,
and this seems to be the same, similar issue, r8168/69 module juggling, within manjaro's MSM/mhwd still ?

The open source column indicates whether or not the shown driver is open-source.
It has nothing to do, if the driver is installed or not, the installed column shows that .

In my case here is a screenshot of my settings manager [image]

As you can see it shows that network-r8168 driver is installed.
But inxi -FGx output shows that network-r8169 driver is being used by the system.

System:    Host: Charalampos Kernel: 4.15.0-1-MANJARO x86_64 bits: 64 gcc: 7.2.1
           Desktop: KDE Plasma 5.11.5 (Qt 5.10.0) Distro: Manjaro Linux
Machine:   Device: desktop System: Gigabyte product: N/A serial: N/A
           Mobo: Gigabyte model: F2A85X-UP4 serial: N/A BIOS: American Megatrends v: F4 date: 03/13/2013
CPU:       Quad core AMD A10-5800K APU with Radeon HD Graphics (-MCP-) arch: Piledriver rev.1 cache: 8192 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 30415
           clock speeds: max: 3800 MHz 1: 1398 MHz 2: 1399 MHz 3: 1399 MHz 4: 1387 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Bonaire XTX [Radeon R7 260X/360] bus-ID: 01:00.0
           Display Server: N/A drivers: ati,radeon (unloaded: modesetting) tty size: 188x27
Audio:     Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller driver: snd_hda_intel bus-ID: 00:14.2
           Card-2 Advanced Micro Devices [AMD/ATI] Tobago HDMI Audio [Radeon R7 360 / R9 360 OEM]
           driver: snd_hda_intel bus-ID: 01:00.1
           Sound: Advanced Linux Sound Architecture v: k4.15.0-1-MANJARO
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 94:de:80:03:22:d0
Drives:    HDD Total Size: 1000.2GB (0.7% used)
           ID-1: /dev/sda model: WDC_WD10EZEX size: 1000.2GB
Partition: ID-1: / size: 170G used: 7.0G (5%) fs: ext4 dev: /dev/sda4
Sensors:   System Temperatures: cpu: 0.0C mobo: N/A gpu: 30.0
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 148 Uptime: 14 min Memory: 1921.3/7989.8MB Init: systemd Gcc sys: 7.2.1
           Client: Shell (bash 4.4.121) inxi: 2.3.56 
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