Question

4

I clean installed 20.04 LTS but now I have no network

rated 0 times [ 4] [ 0] / answers: 1 / hits: 6022 / 2 Years ago, thu, february 17, 2022, 12:27:12

I was running 16.04 LTS (32 bit)
And decided to upgrade to 20.04 LTS. I removed the drive with 16.04 on it and installed a new SSD. I installed via DVD from downloaded iso. Once it is installed and I reboot there is no network. The ethernet controller does not show under network settings.
If I run sudo lshw -C network I get:

*-network UNCLAIMED

     description: Ethernet controller

     product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller

     vendor: Realtek Semiconductor Co., Ltd.

     physical id: 0

     bus info: pci@0000:03:00.0

     version: 3

     width: 64 bits

     clock: 33MHz

     capabilities: pm msi pciexpress msix vpd cap_list

     configuration: latency=0

     resources: ioport:ce00(size=256) memory:fdfff000-fdffffff memory:fdff8000-fdffbfff memory:fd400000-fd41ffff

The cable is plugged in and there are lights on both the adapter on the PC and the router.
I have tried reinstalling but same issue. It worked fine with 16.04 and the only things different are the new SSD and the new OS.
I am not very familiar with linux - just a user.
Any help would be most appreciated. Thank you.

$ lsmod

Module                  Size  Used by

nls_iso8859_1          16384  1

snd_hda_codec_realtek   118784  1

snd_hda_codec_generic    81920  1 snd_hda_codec_realtek

ledtrig_audio          16384  2 snd_hda_codec_generic,snd_hda_codec_realtek

snd_hda_codec_hdmi     61440  1

snd_usb_audio         258048  1

snd_usbmidi_lib        36864  1 snd_usb_audio

snd_hda_intel          53248  4

snd_intel_dspcfg       24576  1 snd_hda_intel

snd_hda_codec         131072  4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek

snd_hda_core           90112  5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek

snd_hwdep              20480  2 snd_usb_audio,snd_hda_codec

edac_mce_amd           32768  0

uvcvideo               98304  0

videobuf2_vmalloc      20480  1 uvcvideo

joydev                 24576  0

input_leds             16384  0

snd_seq_midi           20480  0

videobuf2_memops       20480  1 videobuf2_vmalloc

snd_seq_midi_event     16384  1 snd_seq_midi

kvm_amd                98304  0

videobuf2_v4l2         24576  1 uvcvideo

snd_rawmidi            36864  2 snd_seq_midi,snd_usbmidi_lib

videobuf2_common       49152  2 videobuf2_v4l2,uvcvideo

ccp                    86016  1 kvm_amd

videodev              225280  3 videobuf2_v4l2,uvcvideo,videobuf2_common

kvm                   663552  1 kvm_amd

radeon               1474560  10

mc                     53248  5 videodev,snd_usb_audio,videobuf2_v4l2,uvcvideo,videobuf2_common

snd_seq                69632  2 snd_seq_midi,snd_seq_midi_event

snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi

snd_pcm               106496  5 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core

ttm                   106496  1 radeon

snd_timer              36864  2 snd_seq,snd_pcm

wmi_bmof               16384  0

drm_kms_helper        184320  1 radeon

serio_raw              20480  0

i2c_algo_bit           16384  1 radeon

fb_sys_fops            16384  1 drm_kms_helper

k10temp                16384  0

snd                    90112  23 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi

syscopyarea            16384  1 drm_kms_helper

soundcore              16384  1 snd

sysfillrect            16384  1 drm_kms_helper

sysimgblt              16384  1 drm_kms_helper

mac_hid                16384  0

sch_fq_codel           20480  1

parport_pc             40960  0

ppdev                  24576  0

lp                     20480  0

parport                53248  3 parport_pc,lp,ppdev

drm                   491520  6 drm_kms_helper,radeon,ttm

ip_tables              32768  0

x_tables               40960  1 ip_tables

autofs4                45056  2

uas                    28672  0

usb_storage            77824  1 uas

hid_logitech_hidpp     40960  0

hid_logitech_dj        24576  0

hid_generic            16384  0

usbhid                 57344  1 hid_logitech_dj

hid                   131072  4 usbhid,hid_generic,hid_logitech_dj,hid_logitech_hidpp

pata_acpi              16384  0

pata_jmicron           16384  0

firewire_ohci          40960  0

i2c_piix4              28672  0

firewire_core          65536  1 firewire_ohci

crc_itu_t              16384  1 firewire_core

realtek                24576  0

ahci                   40960  2

pata_atiixp            16384  0

libahci                32768  1 ahci

wmi                    32768  1 wmi_bmof

floppy                 81920  0



 $ dmesg | egrep -i 'eth|net|r816|error|fail'

[    0.193357] NET: Registered protocol family 16

[    0.193357] audit: initializing netlink subsys (disabled)

[    0.206387] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206392] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206395] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206398] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206407] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206410] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206413] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206415] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206424] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206426] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206429] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206432] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206440] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206443] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206446] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206449] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206457] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206460] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206463] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206466] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206474] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206477] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206480] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206483] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206491] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206494] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206497] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206500] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206508] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206511] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206514] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206516] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206525] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.206528] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206530] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206533] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206541] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKA (20190816/dspkginit-438)

[    0.206544] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKB (20190816/dspkginit-438)

[    0.206547] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKC (20190816/dspkginit-438)

[    0.206550] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - LNKD (20190816/dspkginit-438)

[    0.226588] NetLabel: Initializing

[    0.226589] NetLabel:  domain hash size = 128

[    0.226589] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO

[    0.226602] NetLabel:  unlabeled traffic allowed by default

[    0.248324] NET: Registered protocol family 2

[    0.249337] NET: Registered protocol family 1

[    0.249341] NET: Registered protocol family 44

[    0.873227] i8042: Failed to disable AUX port, but continuing anyway... Is this a SiS?

[    1.129168] drop_monitor: Initializing network drop monitor service

[    1.129307] NET: Registered protocol family 10

[    1.136569] NET: Registered protocol family 17

[    1.136850] RAS: Correctable Errors collector initialized.

[    1.243699] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control

[    1.246892] libphy: r8169: probed

[    1.246894] r8169 0000:03:00.0: realtek.ko not loaded, maybe it needs to be added to initramfs?

[    1.272769] r8169: probe of 0000:03:00.0 failed with error -49

[    3.653707] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro

[    5.357098] audit: type=1400 audit(1590039568.703:12): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=595 comm="apparmor_parser"

[    5.357579] audit: type=1400 audit(1590039568.703:13): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=595 comm="apparmor_parser"

[   98.557314] audit: type=1107 audit(1590039661.903:1562): pid=674 uid=103 auid=4294967295 ses=4294967295 msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.13" pid=3278 label="snap.snap-store.ubuntu-software" peer_pid=675 peer_label="unconfined"

[12157.551604] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control

[12157.554165] libphy: r8169: probed

[12157.554167] r8169 0000:03:00.0: realtek.ko not loaded, maybe it needs to be added to initramfs?

[12157.572403] r8169: probe of 0000:03:00.0 failed with error -49

[13125.601531] blk_update_request: I/O error, dev sdd, sector 264544 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 0

[13125.601542] Buffer I/O error on dev sdd2, logical block 44, lost async page write

[13125.601562] blk_update_request: I/O error, dev sdd, sector 6555656 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 0

[13125.601567] Buffer I/O error on dev sdd2, logical block 786433, lost async page write

[13125.872264] sd 9:0:0:0: [sdd] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK

[13202.988262] sd 9:0:0:0: [sdd] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK





$ ifconfig -a



Command 'ifconfig' not found, but can be installed with:



sudo apt install net-tools



$ sudo apt install net-tools

Reading package lists... Done

Building dependency tree       

Reading state information... Done

E: Unable to locate package net-tools

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answered 2 Years ago tionavocad · Accepted Answer

The r8168 driver is included in the Ubuntu repositories so you don't need to compile it yourself, so first, try this:

sudo rmmod r8169 r8168

sudo apt-get purge r8168-dkms

sudo modprobe r8169

dmesg | egrep -i 'eth|net|r816'

ifconfig -a

If there were no errors reported by the modprobe or found in dmesg then you should see an ethernet device in the ifconfig output (in addition to the lo device).

If not, try the r8168 driver:

sudo rmmod r8169

sudo apt-get install r8168-dkms

sudo modprobe r8168

dmesg | egrep -i 'eth|net|r816'

ifconfig -a

If you still get no ethernet device, add the output of:

find /lib -name r816*

lsmod

dmesg | egrep -i 'eth|net|r816|error|fail'

ifconfig -a

to the original question.