cant compile drivers for atheros ar8151

[chili555]

In your logs, we see:

[ 5.733329] sky2: driver version 1.30
[ 5.733741] sky2 0000:04:00.0: Yukon-2 Optima chip revision 1
[ 5.735194] sky2 0000:04:00.0 eth0: addr 54:42:49:07:97:c0
[ 5.757477] sky2 0000:04:00.0 enp4s0: renamed from eth0

....

[ 42.121606] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
[ 42.124959] sky2 0000:04:00.0 enp4s0: enabling interface
[ 42.125583] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready

In other words, we see nothing at all wrong or alarming. We see no reason that your ethernet shouldn't work perfectly well.

Please use the airplane mode switch to disable the wireless temporarily and confirm that you have a known working ethernet cable attached to the computer and a known working port on the router or switch.

Does Network Manager see a wired connection when you click the icon at the top right?



Does it attempt to connect?

Let's have a look at:

dmesg | grep enp4s0

[the-technomancer]

sorry for the late reply. it logged me out for some reason so no notifications and when i refreshed i didn't notice the 2nd page.

if i enable aeroplane mode i see my ethernet card with if config now but it doesn't have an ip. and now i don't see it on the top bar.

georgevaio@Georgevaio:~$ ifconfig
enp4s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 54:42:49:07:97:c0  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 18  


lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 651  bytes 56109 (56.1 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 651  bytes 56109 (56.1 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


georgevaio@Georgevaio:~$ dmesg | grep enp4s0
[    5.778228] sky2 0000:04:00.0 enp4s0: renamed from eth0
[   44.568762] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
[   44.572103] sky2 0000:04:00.0 enp4s0: enabling interface
[   44.572720] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
georgevaio@Georgevaio:~$

[chili555]

Are there any interesting entries here?

cat /etc/network/interfaces

Or here?

cat /etc/netplan/*.yaml

Or here?

cat /etc/NetworkManager/NetworkManager.conf

And, finally, here?

cat /var/log/syslog  | grep enp4s0 | tail -n20

We still see no fault that shows why the ethernet doesn't work as expected.

[jeremy31]

Does it work after sleep/suspend?

[the-technomancer]

here you go

georgevaio@Georgevaio:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
georgevaio@Georgevaio:~$ cat /etc/netplan/*.yaml
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
georgevaio@Georgevaio:~$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile


[ifupdown]
managed=false


[device]
wifi.scan-rand-mac-address=no
georgevaio@Georgevaio:~$ cat /var/log/syslog  | grep enp4s0 | tail -n20
Feb 14 11:13:54 Georgevaio NetworkManager[714]: <info>  [1550135634.8434] settings: (enp4s0): created default wired connection 'Wired connection 1'
Feb 14 11:13:54 Georgevaio NetworkManager[714]: <info>  [1550135634.8441] device (enp4s0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Feb 14 11:13:54 Georgevaio kernel: [   41.798254] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 11:13:54 Georgevaio kernel: [   41.801545] sky2 0000:04:00.0 enp4s0: enabling interface
Feb 14 11:13:54 Georgevaio kernel: [   41.802170] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 18:30:00 Georgevaio kernel: [    5.780607] sky2 0000:04:00.0 enp4s0: renamed from eth0
Feb 14 18:30:05 Georgevaio NetworkManager[659]: <info>  [1550161805.0111] devices added (path: /sys/devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/enp4s0, iface: enp4s0)
Feb 14 18:30:05 Georgevaio NetworkManager[659]: <info>  [1550161805.0112] device added (path: /sys/devices/pci0000:00/0000:00:1c.2/0000:04:00.0/net/enp4s0, iface: enp4s0): no ifupdown configuration found.
Feb 14 18:30:06 Georgevaio NetworkManager[659]: <info>  [1550161806.6905] manager: (enp4s0): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2)
Feb 14 18:30:06 Georgevaio NetworkManager[659]: <info>  [1550161806.6933] settings: (enp4s0): created default wired connection 'Wired connection 1'
Feb 14 18:30:06 Georgevaio NetworkManager[659]: <info>  [1550161806.6941] device (enp4s0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Feb 14 18:30:06 Georgevaio kernel: [   41.672882] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 18:30:06 Georgevaio kernel: [   41.676221] sky2 0000:04:00.0 enp4s0: enabling interface
Feb 14 18:30:06 Georgevaio kernel: [   41.676844] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 18:38:39 Georgevaio NetworkManager[659]: <info>  [1550162319.6431] device (enp4s0): state change: unavailable -> unmanaged (reason 'sleeping', sys-iface-state: 'managed')
Feb 14 18:38:39 Georgevaio kernel: [  555.372642] sky2 0000:04:00.0 enp4s0: disabling interface
Feb 14 18:48:37 Georgevaio kernel: [  564.812967] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 18:48:37 Georgevaio kernel: [  564.816371] sky2 0000:04:00.0 enp4s0: enabling interface
Feb 14 18:48:37 Georgevaio kernel: [  564.820183] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
Feb 14 18:48:37 Georgevaio NetworkManager[659]: <info>  [1550162917.7450] device (enp4s0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'managed')

[the-technomancer]

Does it work after sleep/suspend?

no, it doesn't

[chili555]

I am still unable to see a reason that the ethernet doesn't work. On the chance that Network Manager is at fault, let's try disabling it temporarily:

sudo service network-manager stop
sudo dhclient enp4s0

Are there any interesting messages, errors, warnings, etc.?

Restart NM with:

sudo service network-manager start

[the-technomancer]

nothing

[chili555]

nothing

After doing so, what does this report?

cat /var/log/syslog | grep dhclient | tail -n10

[the-technomancer]

georgevaio@Georgevaio:~$ cat /var/log/syslog | grep dhclient | tail -n10
Feb 21 11:28:10 Georgevaio dhclient[1109]: bound to 172.16.1.79 -- renewal in 9154 seconds.
Feb 21 20:56:06 Georgevaio kernel: [   20.727894] audit: type=1400 audit(1550775340.775:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=455 comm="apparmor_parser"
Feb 21 20:56:06 Georgevaio kernel: [   20.727906] audit: type=1400 audit(1550775340.775:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=455 comm="apparmor_parser"
Feb 21 20:56:09 Georgevaio NetworkManager[952]: <info>  [1550775369.3159] dhcp-init: Using DHCP client 'dhclient'
Feb 21 20:56:12 Georgevaio NetworkManager[952]: <info>  [1550775372.8700] dhcp4 (wlp2s0): dhclient started with pid 1566
Feb 21 20:56:13 Georgevaio dhclient[1566]: DHCPDISCOVER on wlp2s0 to 255.255.255.255 port 67 interval 3 (xid=0xa78f6b07)
Feb 21 20:56:13 Georgevaio dhclient[1566]: DHCPREQUEST of 192.168.0.24 on wlp2s0 to 255.255.255.255 port 67 (xid=0x76b8fa7)
Feb 21 20:56:13 Georgevaio dhclient[1566]: DHCPOFFER of 192.168.0.24 from 192.168.0.2
Feb 21 20:56:14 Georgevaio dhclient[1566]: DHCPACK of 192.168.0.24 from 192.168.0.2
Feb 21 20:56:15 Georgevaio dhclient[1566]: bound to 192.168.0.24 -- renewal in 1550 seconds.