After upgrading from Ubuntu 16.04 to 18.04 internet no longer connects
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After upgrading from Ubuntu 16.04LTS to Ubuntu 18.04LTS the computer no longer connects to the internet (the upgrading itself was performed through the wired network, no fails at all).
After upgrading I turned the computer off and tried to use it a couple of days later. It pings OK (ping 8.8.8.8 runs at 43ms. to 45ms each response) and ifconfig does not show any weird message. I kept the same router and there are two other machines running U16.04 and they still connect OK.
I made no change at all in the machine, it was running perfectly well before upgrading. Can you just point me out to where to start investigating?
16.04 networking 18.04 upgrade
edited Nov 18 at 17:06
James K
19414
asked Nov 18 at 16:42
user43430
163
add a comment |
up vote
0
down vote
favorite
After upgrading from Ubuntu 16.04LTS to Ubuntu 18.04LTS the computer no longer connects to the internet (the upgrading itself was performed through the wired network, no fails at all).
After upgrading I turned the computer off and tried to use it a couple of days later. It pings OK (ping 8.8.8.8 runs at 43ms. to 45ms each response) and ifconfig does not show any weird message. I kept the same router and there are two other machines running U16.04 and they still connect OK.
I made no change at all in the machine, it was running perfectly well before upgrading. Can you just point me out to where to start investigating?
16.04 networking 18.04 upgrade
edited Nov 18 at 17:06
James K
19414
asked Nov 18 at 16:42
user43430
163
It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
After upgrading from Ubuntu 16.04LTS to Ubuntu 18.04LTS the computer no longer connects to the internet (the upgrading itself was performed through the wired network, no fails at all).
After upgrading I turned the computer off and tried to use it a couple of days later. It pings OK (ping 8.8.8.8 runs at 43ms. to 45ms each response) and ifconfig does not show any weird message. I kept the same router and there are two other machines running U16.04 and they still connect OK.
I made no change at all in the machine, it was running perfectly well before upgrading. Can you just point me out to where to start investigating?
16.04 networking 18.04 upgrade
edited Nov 18 at 17:06
James K
19414
asked Nov 18 at 16:42
user43430
163
After upgrading from Ubuntu 16.04LTS to Ubuntu 18.04LTS the computer no longer connects to the internet (the upgrading itself was performed through the wired network, no fails at all).
After upgrading I turned the computer off and tried to use it a couple of days later. It pings OK (ping 8.8.8.8 runs at 43ms. to 45ms each response) and ifconfig does not show any weird message. I kept the same router and there are two other machines running U16.04 and they still connect OK.
I made no change at all in the machine, it was running perfectly well before upgrading. Can you just point me out to where to start investigating?
16.04 networking 18.04 upgrade
16.04 networking 18.04 upgrade
edited Nov 18 at 17:06
James K
19414
asked Nov 18 at 16:42
user43430
163
edited Nov 18 at 17:06
James K
19414
asked Nov 18 at 16:42
user43430
163
edited Nov 18 at 17:06
James K
19414
edited Nov 18 at 17:06
James K
19414
edited Nov 18 at 17:06
James K
19414
19414
asked Nov 18 at 16:42
user43430
163
asked Nov 18 at 16:42
user43430
163
asked Nov 18 at 16:42
user43430
163
163
It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35
add a comment |
It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35
It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
- First, I would suggest you reboot your modem and see what that effect has. Leave it disconnected from power for a full half minute.
- Secondly, you can ensure that you have networking enabled, and if that does nothing, try disabling your wired connection,(usually named "1") Then re-enable it.
- You might also next try deleting the wired connection and then recreating a new one.
- Did you enable your firewall? GUFW. Ensure you have outgoing connections allowed.
answered Nov 18 at 17:23
Dosenfleisch
315
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
- First, I would suggest you reboot your modem and see what that effect has. Leave it disconnected from power for a full half minute.
- Secondly, you can ensure that you have networking enabled, and if that does nothing, try disabling your wired connection,(usually named "1") Then re-enable it.
- You might also next try deleting the wired connection and then recreating a new one.
- Did you enable your firewall? GUFW. Ensure you have outgoing connections allowed.
answered Nov 18 at 17:23
Dosenfleisch
315
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
add a comment |
up vote
0
down vote
- First, I would suggest you reboot your modem and see what that effect has. Leave it disconnected from power for a full half minute.
- Secondly, you can ensure that you have networking enabled, and if that does nothing, try disabling your wired connection,(usually named "1") Then re-enable it.
- You might also next try deleting the wired connection and then recreating a new one.
- Did you enable your firewall? GUFW. Ensure you have outgoing connections allowed.
answered Nov 18 at 17:23
Dosenfleisch
315
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
add a comment |
up vote
0
down vote
up vote
0
down vote
- First, I would suggest you reboot your modem and see what that effect has. Leave it disconnected from power for a full half minute.
- Secondly, you can ensure that you have networking enabled, and if that does nothing, try disabling your wired connection,(usually named "1") Then re-enable it.
- You might also next try deleting the wired connection and then recreating a new one.
- Did you enable your firewall? GUFW. Ensure you have outgoing connections allowed.
answered Nov 18 at 17:23
Dosenfleisch
315
- First, I would suggest you reboot your modem and see what that effect has. Leave it disconnected from power for a full half minute.
- Secondly, you can ensure that you have networking enabled, and if that does nothing, try disabling your wired connection,(usually named "1") Then re-enable it.
- You might also next try deleting the wired connection and then recreating a new one.
- Did you enable your firewall? GUFW. Ensure you have outgoing connections allowed.
answered Nov 18 at 17:23
Dosenfleisch
315
answered Nov 18 at 17:23
Dosenfleisch
315
answered Nov 18 at 17:23
Dosenfleisch
315
answered Nov 18 at 17:23
Dosenfleisch
315
315
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
add a comment |
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
Hi, and thanks. I'll reboot the modem, but what I do not understand is the fact that this computer (the one I'm using now) is connected to the same router/modem as the one that I upgraded to U18.04 (the upgrade was performed through the network). I have traded the ports with this computer and it still works, the upgraded one does not. I even let it alone with the router/modem. About the firewall, can you point me to any source of info that would guide me to check and set it up accordingly? Thanks.
– user43430
Nov 18 at 17:37
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
(additional) When upgrading I was asked to update or to keep previous setting in, at least, three different moments. I all of them I decided to keep previous settings.
– user43430
Nov 18 at 17:40
add a comment |
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It is not quite clear what you mean by "no longer connects" but "It pings OK", since ping is a type of connection. Do you mean you can't view web pages? If so, it is probably a firewall problem of some sort.
– James K
Nov 18 at 16:50
First of all, thanks for your reply. Yep, that's it. Pings OK, but no page opens with valid URL (http or https). I use Firefox, the message for any attempt is always "We're having trouble finding that site". It used to work fine with Ubuntu 16.04, same hardware. Does Ubuntu 18.04 change firewall settings by its own? Any suggestion where to start investigating?
– user43430
Nov 18 at 17:03
Edit your network connection in connection manager, or create new and dont forget to set DNS by dhcp or just 8.8.8.8 If I guess correctly you can ping, so network working, but problem can be in dns.
– LeonidMew
Nov 18 at 17:35