Ask Your Question

Revision history [back]

Unstable network after upgrading from 28 to 29

  After upgrade from 28 to 29, network becomes unstable but i am not able to find any error in kernel log. Surprisingly, ifconfig show no error in network stats.

Ping output to another machine in local network shows missing packages
PING 192.168.1.130 (192.168.1.130) 56(84) bytes of data.
64 bytes from 192.168.1.130: icmp_seq=7 ttl=64 time=0.668 ms
64 bytes from 192.168.1.130: icmp_seq=8 ttl=64 time=0.656 ms
64 bytes from 192.168.1.130: icmp_seq=9 ttl=64 time=0.688 ms

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::23c0:cc5f:8b02:15d1  prefixlen 64  scopeid 0x20<link>
        ether 9c:5c:8e:bc:32:57  txqueuelen 1000  (Ethernet)
        RX packets 10701915  bytes 14632554858 (13.6 GiB)
        RX errors 0  dropped 0  overruns 47  frame 0
        TX packets 3677904  bytes 3631365422 (3.3 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device memory 0xdf200000-df21ffff  

lspci output (only 1 card is used)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V
04:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)

Unstable network after upgrading from 28 to 29

 

After upgrade from 28 to 29, network becomes unstable but i am not able to find any error in kernel log. Surprisingly, ifconfig show no error in network stats. stats.

Ping output to another machine in local network shows missing packages
PING 192.168.1.130 (192.168.1.130) 56(84) bytes of data.
64 bytes from 192.168.1.130: icmp_seq=7 ttl=64 time=0.668 ms
64 bytes from 192.168.1.130: icmp_seq=8 ttl=64 time=0.656 ms
64 bytes from 192.168.1.130: icmp_seq=9 ttl=64 time=0.688 ms

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::23c0:cc5f:8b02:15d1  prefixlen 64  scopeid 0x20<link>
        ether 9c:5c:8e:bc:32:57  txqueuelen 1000  (Ethernet)
        RX packets 10701915  bytes 14632554858 (13.6 GiB)
        RX errors 0  dropped 0  overruns 47  frame 0
        TX packets 3677904  bytes 3631365422 (3.3 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device memory 0xdf200000-df21ffff  

lspci output (only 1 card is used)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V
04:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)

I tried the following methods but none of them worked
 - Disable firewall
 - Change RX and TX size via ethtool
 - Downgrade kernel from 4.19 to 4.18
 - Use USB network card
 - Disable NetworkManager

Hardware is unlikely to be the issue as there is no problem with Ubuntu 18.06 (Live USB)

Unstable network after upgrading from 28 to 29

After upgrade from 28 to 29, network becomes unstable but i am not able to find any error in kernel log. Surprisingly, ifconfig show no error in network stats.

Ping output to another machine in local network shows missing packages
PING 192.168.1.130 (192.168.1.130) 56(84) bytes of data.
64 bytes from 192.168.1.130: icmp_seq=7 ttl=64 time=0.668 ms
64 bytes from 192.168.1.130: icmp_seq=8 ttl=64 time=0.656 ms
64 bytes from 192.168.1.130: icmp_seq=9 ttl=64 time=0.688 ms

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.120  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::23c0:cc5f:8b02:15d1  prefixlen 64  scopeid 0x20<link>
        ether 9c:5c:8e:bc:32:57  txqueuelen 1000  (Ethernet)
        RX packets 10701915  bytes 14632554858 (13.6 GiB)
        RX errors 0  dropped 0  overruns 47  frame 0
        TX packets 3677904  bytes 3631365422 (3.3 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device memory 0xdf200000-df21ffff  

lspci output (only 1 card is used)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V
04:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)

I tried the following methods but none of them worked
 - Disable firewall
 - Change RX and TX size via ethtool
 - Downgrade kernel from 4.19 to 4.18
 - Use USB network card
 - Disable NetworkManager

Hardware is unlikely to be the issue as there is no problem with Ubuntu 18.06 (Live USB)