Network (Ethernet/Wired) issues after update (though works on Windows)

**1984dc** · December 28th, 2021

Hi,

After I updated a few months back my ethernet connection failed to connect ("Connection Failed" error), sometimes it seems connected in the network manager, but I can't connect to the internet at all. I managed to get it working again, but it flaked out again after another update and now the same solution (renaming the network and moving to managed networking) doesn't work

It might be something to do with my BIOS/a Firmware update (maybe?!) as I tried a live USB (of another similar distro) and had the same issue. Windows 10 works fine on Ethernet and wireless though.

Goes without saying that I have already checked through the relevant posts on here/mr google (I think!) and nothing has worked as of yet after quite a bit of trying.

My wireless is also out!!!! So I can't connect on that to check stuff. That is just a driver issue though I think so should be easy to fix when I get my wired connection fixed.

Some details:

Ubuntu version:
20.4

/etc/NetworkManager/NetworkManager.conf :

Code:

[main]
plugins=ifupdown,keyfile


[ifupdown]
managed=true


[device]
wifi.scan-rand-mac-address=no

/etc/netplan/01-network-manager-all.yaml :

Code:

network:
    Version: 2
    Renderer: NetworkManager

Output of of sudo lshw -C network :

Code:

 *-network                 
       description: Ethernet interface
       product: Ethernet Connection I217-V
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eno1
       version: 05
       serial: e0:3f:49:1a:f0:f7
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.11.0-37-generic duplex=full firmware=0.13-4 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:31 memory:f7100000-f711ffff memory:f7139000-f7139fff ioport:f040(size=32)
  *-network
       description: Network controller
       product: BCM4352 802.11ac Wireless Network Adapter
       vendor: Broadcom Inc. and subsidiaries
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 03
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=bcma-pci-bridge latency=0
       resources: irq:17 memory:f7400000-f7407fff memory:f7200000-f73fffff

Many many thanks for any help with this one, I have been

for quite a while now and not really sure which way to go here!

**praseodym** · December 28th, 2021

Please show

Code:

cat /etc/network/interfaces
dmesg | grep e1
lsmod

**1984dc** · December 29th, 2021

Hi Praedom,

Not sure how or why, but after running those commands my ethernet now seems to be working....

Going to run a few updates and see if this issue doesn't happen again now.

Many thanks!

**1984dc** · March 29th, 2022

This has randomly started again. The details you asked for:

[code]

cat /etc/network/interfaces

# The loopback network interface
auto eno1
# The primary network interface
iface eno1 inet dhcp

dmesg | grep e1

[ 0.165547] pci 0000:01:00.1: [10de:0e1a] type 00 class 0x040300
[ 0.263506] thermal LNXTHERM:01: registered as thermal_zone1
[ 0.493416] integrity: Loaded X.509 cert 'Microsoft Windows Production PCA 2011: a92902398e16c49778cd90f99e4f9ae17c55af53'
[ 0.673861] e1000e: Intel(R) PRO/1000 Network Driver
[ 0.673863] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.674135] e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 0.751176] e1000e 0000:00:19.0 0000:00:19.0 (uninitialized): registered PHC clock
[ 0.818593] e1000e 0000:00:19.0 eth0: (PCI Express:2.5GT/s:Width x1) e0:3f:49:1a:f0:f7
[ 0.818596] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection
[ 0.818634] e1000e 0000:00:19.0 eth0: MAC: 11, PHY: 12, PBA No: FFFFFF-0FF
[ 0.819343] e1000e 0000:00:19.0 eno1: renamed from eth0
[ 13.081600] e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[ 30.801631] audit: type=1326 audit(1648575678.819:109): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.snap-store.ubuntu-software pid=2796 comm="snap-store" exe="/snap/snap-store/558/usr/bin/snap-store" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7fe13303576d code=0x50000
[ 50.010121] audit: type=1326 audit(1648575698.901:141): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.snap-store.ubuntu-software pid=2796 comm="pool-org.gnome." exe="/snap/snap-store/558/usr/bin/snap-store" sig=0 arch=c000003e syscall=93 compat=0 ip=0x7fe13302c3cb code=0x50000

lsmod

Module Size Used by
rfcomm 81920 4
vboxnetadp 28672 0
vboxnetflt 28672 0
vboxdrv 516096 2 vboxnetadp,vboxnetflt
cmac 16384 4
algif_hash 16384 2
algif_skcipher 16384 2
af_alg 28672 10 algif_hash,algif_skcipher
bnep 24576 2
nls_iso8859_1 16384 1
nvidia_uvm 1036288 0
nvidia_drm 61440 8
nvidia_modeset 1200128 11 nvidia_drm
intel_rapl_msr 20480 0
intel_rapl_common 24576 1 intel_rapl_msr
x86_pkg_temp_thermal 20480 0
intel_powerclamp 20480 0
nvidia 35319808 482 nvidia_uvm,nvidia_modeset
coretemp 20480 0
snd_hda_codec_realtek 147456 1
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 1 snd_hda_codec_generic
snd_hda_codec_hdmi 61440 1
snd_hda_intel 53248 6
snd_intel_dspcfg 28672 1 snd_hda_intel
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
snd_hda_codec 147456 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_i ntel,snd_hda_codec_realtek
snd_hda_core 94208 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_i ntel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 16384 1 snd_hda_codec
kvm_intel 303104 0
snd_pcm 114688 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd _hda_core
btusb 61440 0
kvm 864256 1 kvm_intel
btrtl 24576 1 btusb
crct10dif_pclmul 16384 1
btbcm 20480 1 btusb
ghash_clmulni_intel 16384 0
btintel 32768 1 btusb
snd_seq_midi 20480 0
mei_hdcp 24576 0
snd_seq_midi_event 16384 1 snd_seq_midi
bluetooth 651264 31 btrtl,btintel,btbcm,bnep,btusb,rfcomm
aesni_intel 376832 6
snd_rawmidi 36864 1 snd_seq_midi
wl 6455296 0
ecdh_generic 16384 1 bluetooth
ecc 36864 1 ecdh_generic
input_leds 16384 0
joydev 28672 0
snd_seq 73728 2 snd_seq_midi,snd_seq_midi_event
crypto_simd 16384 1 aesni_intel
cryptd 24576 4 crypto_simd,ghash_clmulni_intel
drm_kms_helper 253952 1 nvidia_drm
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
rapl 20480 0
intel_cstate 20480 0
eeepc_wmi 16384 0
wmi_bmof 16384 0
mxm_wmi 16384 0
snd_timer 40960 2 snd_seq,snd_pcm
efi_pstore 16384 0
at24 24576 0
cec 53248 1 drm_kms_helper
cfg80211 888832 1 wl
snd 94208 23 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_h da_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_code c,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawm idi
mei_me 40960 1
rc_core 61440 1 cec
fb_sys_fops 16384 1 drm_kms_helper
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
mei 131072 3 mei_hdcp,mei_me
soundcore 16384 1 snd
mac_hid 16384 0
sch_fq_codel 20480 3
ipmi_devintf 20480 0
ipmi_msghandler 114688 1 ipmi_devintf
msr 16384 0
parport_pc 45056 0
ppdev 24576 0
lp 20480 0
parport 65536 3 parport_pc,lp,ppdev
drm 557056 12 drm_kms_helper,nvidia,nvidia_drm
ip_tables 32768 0
x_tables 49152 1 ip_tables
autofs4 45056 2
hid_generic 16384 0
usbhid 57344 0
hid 139264 2 usbhid,hid_generic
mfd_aaeon 16384 0
asus_wmi 36864 2 eeepc_wmi,mfd_aaeon
sparse_keymap 16384 1 asus_wmi
crc32_pclmul 16384 0
i2c_i801 36864 0
firewire_ohci 45056 0
i2c_smbus 20480 1 i2c_i801
firewire_core 65536 1 firewire_ohci
ahci 40960 6
lpc_ich 24576 0
libahci 36864 1 ahci
crc_itu_t 16384 1 firewire_core
e1000e 266240 0
xhci_pci 24576 0
xhci_pci_renesas 20480 1 xhci_pci
video 53248 1 asus_wmi
wmi 32768 4 asus_wmi,wmi_bmof,mfd_aaeon,mxm_wmi

[/code ]

Any help would be hugely appreciated!!!!