Upgrade to 20.04.1 no internet

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Upgrade to 20.04.1 no internet

Chris Pollock-2
I upgraded from 18.04.5LTS this morning. After a restart I have no network connectivity. I've not experienced this before with any upgrades so I'm not sure what to check. I did load up my 18.04.1 DVD and had internet.

Any advice would be greatly appreciated.

Chris
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Re: Upgrade to 20.04.1 no internet

Liam Proven
On Thu, 1 Oct 2020 at 02:43, Chris Pollock <[hidden email]> wrote:
>
> I upgraded from 18.04.5LTS this morning. After a restart I have no network connectivity. I've not experienced this before with any upgrades so I'm not sure what to check. I did load up my 18.04.1 DVD and had internet.
>
> Any advice would be greatly appreciated.

Are you using wifi? Try connecting directly via an Ethernet cable. If
this works, do:

sudo -s
apt update
apt full-upgrade -y
apt autoremove
apt clean

It may be that this will update some missing or incompletely-installed
drivers and get things working.

Also, check your Software Sources screen and install any proprietary
drivers it recommends.


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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Chris Pollock-2

On October 1, 2020, at 4:11 AM, Liam Proven <[hidden email]> wrote:

>On Thu, 1 Oct 2020 at 02:43, Chris Pollock <[hidden email]> wrote:
>>
>> I upgraded from 18.04.5LTS this morning. After a restart I have no network connectivity. I've not experienced this before with any upgrades so I'm not sure what to check. I did load up my 18.04.1 DVD and had internet.
>>
>> Any advice would be greatly appreciated.
>Are you using wifi? Try connecting directly via an Ethernet cable. If
>this works, do:
>sudo -s
>apt update
>apt full-upgrade -y
>apt autoremove
>apt clean
>It may be that this will update some missing or incompletely-installed
>drivers and get things working.
>Also, check your Software Sources screen and install any proprietary
>drivers it recommends.
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I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.


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Re: Upgrade to 20.04.1 no internet

Liam Proven
On Thu, 1 Oct 2020 at 15:14, Chris Pollock <[hidden email]> wrote:
buntu-users
>
> I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.

Hmmm. OK.

Things you could try:
* does your machine have wifi? Could you try connecting that way?
* if not, do you have a USB network adaptor you could try (or Cardbus,
or an old PCI one if it's a desktop)?
* Download the 20.04 ISO using your live CD and write to a medium. See
if it works.
* Long shot this time, but check your system firmware is up to date

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Re: Upgrade to 20.04.1 no internet

Colin Law
In reply to this post by Chris Pollock-2
On Thu, 1 Oct 2020 at 14:14, Chris Pollock <[hidden email]> wrote:
> ...
> I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.
>

I don't think you have confirmed whether apt update and full-upgrade
showed any issues.

Unplug the ethernet and run
sudo journalctl -f
and plug it in and see what it shows

Also I have to ask, have you checked the other end of the ethernet is
plugged into something useful and that trying another cable doesn't
help?

Colin

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Chris Pollock-2
Liam, firmware was updated on 07/08/20 to version 1.173.19. It's possible it was updated yesterday also.

On October 1, 2020, at 8:48 AM, Liam Proven <[hidden email]> wrote:

On Thu, 1 Oct 2020 at 15:14, Chris Pollock <[hidden email]> wrote:
buntu-users
>
> I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.

Hmmm. OK.

Things you could try:
* does your machine have wifi? Could you try connecting that way?
* if not, do you have a USB network adaptor you could try (or Cardbus,
or an old PCI one if it's a desktop)?
* Download the 20.04 ISO using your live CD and write to a medium. See
if it works.
* Long shot this time, but check your system firmware is up to date

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Chris Pollock-2

On October 1, 2020, at 9:22 AM, Colin Law <[hidden email]> wrote:

>On Thu, 1 Oct 2020 at 14:14, Chris Pollock <[hidden email]> wrote:
>> ...
>> I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.
>>
>I don't think you have confirmed whether apt update and full-upgrade
>showed any issues.
>Unplug the ethernet and run
>sudo journalctl -f
>and plug it in and see what it shows
>Also I have to ask, have you checked the other end of the ethernet is
>plugged into something useful and that trying another cable doesn't
>help?
>Colin

As far as I can tell there were no errors during the upgrade. I wasn't in the room the whole time. I downloaded and burned a 20.04 DVD, interenet
works. I ran journalctl -f with the Ethernet cable disconnected then plugged it in. The output is here pastebin.com/60ecK76v
I have a new Ethernet cable installed. Not sure what you mean "the other end plugged into something useful"


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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Chris Pollock-2

On October 1, 2020, at 9:22 AM, Colin Law <[hidden email]> wrote:

>On Thu, 1 Oct 2020 at 14:14, Chris Pollock <[hidden email]> wrote:
>> ...
>> I'm already connected via Ethernet cable. No problems off of the 18.04.1 DVD. I just have no idea where/what to check.
>>
>I don't think you have confirmed whether apt update and full-upgrade
>showed any issues.

Colin, I neglected to clarify, the upgrade was done when software manager popped
up yesterday morning and notified me the upgrade was available. I didn't do it from the command line.

>Unplug the ethernet and run
>sudo journalctl -f
>and plug it in and see what it shows
>Also I have to ask, have you checked the other end of the ethernet is
>plugged into something useful and that trying another cable doesn't
>help?
>Colin
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Re: Upgrade to 20.04.1 no internet

Liam Proven
In reply to this post by Chris Pollock-2
On Thu, 1 Oct 2020 at 22:09, Chris Pollock <[hidden email]> wrote:
>
> Liam, firmware was updated on 07/08/20 to version 1.173.19. It's possible it was updated yesterday also.

Please reply _underneath_ the text you're replying to. It's easy in
Gmail -- I'm doing it right now. Just press Ctrl-A to select all,
which expands the quoted text, and edit and type your response. It is
also good manners to click the 3 vertical dots by the wastebin at the
bottom right of the compose window and pick "plain text".

What make/model is your computer and/or motherboard (if it's a
desktop)? Without knowing, the version number tells us nothing, I'm
afraid.

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2


On Friday, October 2, 2020, Liam Proven <[hidden email]> wrote:
On Thu, 1 Oct 2020 at 22:09, Chris Pollock <[hidden email]> wrote:
>
> Liam, firmware was updated on 07/08/20 to version 1.173.19. It's possible it was updated yesterday also.

Please reply _underneath_ the text you're replying to. It's easy in
Gmail -- I'm doing it right now. Just press Ctrl-A to select all,
which expands the quoted text, and edit and type your response. It is
also good manners to click the 3 vertical dots by the wastebin at the
bottom right of the compose window and pick "plain text".

What make/model is your computer and/or motherboard (if it's a
desktop)? Without knowing, the version number tells us nothing, I'm
afraid.

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Apologies Liam but I'm using an Amazon Fire tablet and still trying to get used to doing email on it since the desktop is down, no 3 dogs and no Ctrl key so I have To do it this way. To answer your questions, it's a Dell Optiplex 780 and the MB is Dell  OC27VV. BIOS version is A15.I


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Re: Upgrade to 20.04.1 no internet

Liam Proven
On Fri, 2 Oct 2020 at 16:33, Chris Pollock <[hidden email]> wrote:

> Apologies Liam but I'm using an Amazon Fire tablet and still trying to get used to doing email on it since the desktop is down, no 3 dogs and no Ctrl key so I have To do it this way. To answer your questions, it's a Dell Optiplex 780 and the MB is Dell  OC27VV. BIOS version is A15.

Ahh, OK, fair enough then, you're forgiven. It's difficult to
impossible on mobile.

A15 seems to be the latest, so it's not that, then, I'm afraid. :-(



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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
On Fri, Oct 2, 2020 at 4:22 PM Liam Proven <[hidden email]> wrote:

>
> On Fri, 2 Oct 2020 at 16:33, Chris Pollock <[hidden email]> wrote:
>
> > Apologies Liam but I'm using an Amazon Fire tablet and still trying to get used to doing email on it since the desktop is down, no 3 dogs and no Ctrl key so I have To do it this way. To answer your questions, it's a Dell Optiplex 780 and the MB is Dell  OC27VV. BIOS version is A15.
>
> Ahh, OK, fair enough then, you're forgiven. It's difficult to
> impossible on mobile.
>
> A15 seems to be the latest, so it's not that, then, I'm afraid. :-(
>
Dummy me, I could have been using the live DVD since internet works
with it. Which is a real mystery to me as to why.

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Re: Upgrade to 20.04.1 no internet

Colin Law
In reply to this post by Chris Pollock-2
On Thu, 1 Oct 2020 at 22:04, Chris Pollock <[hidden email]> wrote:
> ...
> I ran journalctl -f with the Ethernet cable disconnected then plugged it in. The output is here pastebin.com/60ecK76v
> I have a new Ethernet cable installed. Not sure what you mean "the other end plugged into something useful"
>

Looking at the log it seems to have connected to the DHCP server ok
and acquired an IP addres.  What does
ip addr
show?

I think the errors are to do with IPV6.  Have you been playing with
IPV6?  How have you got V6 configured in the network manager settings
for the connection.

The reason it works off the live DVD is that it is a settings issue of
some sort rather than a s/w or hardware problem.

Colin

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Re: Upgrade to 20.04.1 no internet

Karl Auer
On Sat, 2020-10-03 at 11:07 +0100, Colin Law wrote:
> I think the errors are to do with IPV6.  Have you been playing with
> IPV6?  How have you got V6 configured in the network manager settings
> for the connection.

It's quite rare that IPv6 screws with anything these days. People tend
to either have it and it just works, or they don't have it. Because
almost everything tries IPv6 first, it's common to see lots of IPv6
"error messages" on systems with no IPv6 connectivity.

Otherwise I'm with Colin - settings rather than a defect.

This is a wild shot in the dark, but those "trust chain broken"
messages could be evidence of a clock issue (the crypto protecting most
major domains these days relies on agreed time). Make sure your
computer time is set correctly. If you have a local resolver on your
network, make sure its time is set correctly too. Though it would be a
bit odd for the time to differ between the live CD and the real system.

Looking at that log, this feels like a DNS or routing issue, not a
hardware issue (except for the time, maybe). On a different computer,
look up www.google.com and try pinging its IPv4 address (or any of its
IPv4 addresses) from the problem child. If the ping gets there, you
have a DNS problem. If the ping doesn't get there, we can look
further...

Regards, K.

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Colin Law
On Sat, 2020-10-03 at 11:07 +0100, Colin Law wrote:

> On Thu, 1 Oct 2020 at 22:04, Chris Pollock <
> [hidden email]> wrote:
> > ...
> > I ran journalctl -f with the Ethernet cable disconnected then
> > plugged it in. The output is here pastebin.com/60ecK76v
> > I have a new Ethernet cable installed. Not sure what you mean "the
> > other end plugged into something useful"
> >
>
> Looking at the log it seems to have connected to the DHCP server ok
> and acquired an IP addres.  What does
> ip addr
> show?
A little after 11pm CDT last night suddenly the internet came back up
however I'm not sure if it's permanent or not. Here's the output of ip
addr and I added the output of route:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
    link/ether 00:25:64:c7:b1:e4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.220/24 brd 192.168.0.255 scope global dynamic
noprefixroute eth0
       valid_lft 55224sec preferred_lft 55224sec
    inet6 fd00::7972:4c96:65e0:5e33/64 scope global temporary dynamic
       valid_lft 573627sec preferred_lft 54966sec
    inet6 fd00::bb65:4a5:a5fa:2a4b/64 scope global dynamic mngtmpaddr
noprefixroute
       valid_lft 2591936sec preferred_lft 604736sec
    inet6 fe80::f0a1:dfc9:9682:7696/64 scope link noprefixroute
       valid_lft forever preferred_lft forever

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
default         _gateway        0.0.0.0         UG    100    0        0
eth0
link-local      0.0.0.0         255.255.0.0     U     1000   0        0
eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     100    0        0
eth0

>
> I think the errors are to do with IPV6.  Have you been playing with
> IPV6?  How have you got V6 configured in the network manager settings
> for the connection.

Have never messed with V6
>
> The reason it works off the live DVD is that it is a settings issue
> of
> some sort rather than a s/w or hardware problem.
>
> Colin
>

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Re: Upgrade to 20.04.1 no internet

Colin Law
On Sat, 3 Oct 2020 at 14:42, Chris <[hidden email]> wrote:
>
> A little after 11pm CDT last night suddenly the internet came back up
> however I'm not sure if it's permanent or not. Here's the output of ip
> addr and I added the output of route:

Are you saying it has now fixed itself and the problem is, at least
for the moment, gone?
You say the internet came back up but lack of internet was not the
fundamental problem. You said you had no network connectivity which
suggests that networking was completely down so you couldn't even
access your router or other devices on the local network.

Colin

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
On Sat, 2020-10-03 at 14:54 +0100, Colin Law wrote:

> On Sat, 3 Oct 2020 at 14:42, Chris <[hidden email]>
> wrote:
> > A little after 11pm CDT last night suddenly the internet came back
> > up
> > however I'm not sure if it's permanent or not. Here's the output of
> > ip
> > addr and I added the output of route:
>
> Are you saying it has now fixed itself and the problem is, at least
> for the moment, gone?
> You say the internet came back up but lack of internet was not the
> fundamental problem. You said you had no network connectivity which
> suggests that networking was completely down so you couldn't even
> access your router or other devices on the local network.
>
Yes, I have no outside connectivity. I could access my DSL modem by
pinging 192.168.0.220 and BIND DNS 127.0.0.1 but nothing outside of
that on the desktop.

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Re: Upgrade to 20.04.1 no internet

Karl Auer
In reply to this post by Colin Law
On Sat, 2020-10-03 at 14:54 +0100, Colin Law wrote:
> On Sat, 3 Oct 2020 at 14:42, Chris <[hidden email]>
> wrote:
> > A little after 11pm CDT last night suddenly the internet came back
> > up

> Are you saying it has now fixed itself and the problem is, at least
> for the moment, gone?
> You say the internet came back up but lack of internet was not the
> fundamental problem. You said you had no network connectivity which
> suggests that networking was completely down so you couldn't even
> access your router or other devices on the local network.

The interface was getting an IPv4 address via DHCP, so there was
connectivity at least between the DHCP server and the interface...

I'm still thinking DNS more than anything else.

Regards, K.

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Re: Upgrade to 20.04.1 no internet

Karl Auer
In reply to this post by Chris Pollock-2
On Sat, 2020-10-03 at 09:20 -0500, Chris wrote:

> On Sat, 2020-10-03 at 14:54 +0100, Colin Law wrote:
> > On Sat, 3 Oct 2020 at 14:42, Chris <[hidden email]>
> > wrote:
> > > A little after 11pm CDT last night suddenly the internet came
> > > back
> > > up
> > > however I'm not sure if it's permanent or not. Here's the output
> > > of
> > > ip
> > > addr and I added the output of route:
> >
> > Are you saying it has now fixed itself and the problem is, at least
> > for the moment, gone?
> > You say the internet came back up but lack of internet was not the
> > fundamental problem. You said you had no network connectivity which
> > suggests that networking was completely down so you couldn't even
> > access your router or other devices on the local network.
> >
> Yes, I have no outside connectivity. I could access my DSL modem by
> pinging 192.168.0.220 and BIND DNS 127.0.0.1 but nothing outside of
> that on the desktop.

192.168.0.220 was (is?) the IPv4 address of your computer's interface;
the router is on 192.168.0.1. At least, according to the log you put in
Pastebin.

Did you try pinging an IP address (NOT repeat NOT a domain name)
outside your network?

Regards, K.

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Re: Upgrade to 20.04.1 no internet

Chris Pollock-2
In reply to this post by Karl Auer
On Sat, 2020-10-03 at 20:37 +1000, Karl Auer wrote:

> On Sat, 2020-10-03 at 11:07 +0100, Colin Law wrote:
> > I think the errors are to do with IPV6.  Have you been playing with
> > IPV6?  How have you got V6 configured in the network manager
> > settings
> > for the connection.
>
> It's quite rare that IPv6 screws with anything these days. People
> tend
> to either have it and it just works, or they don't have it. Because
> almost everything tries IPv6 first, it's common to see lots of IPv6
> "error messages" on systems with no IPv6 connectivity.
>
> Otherwise I'm with Colin - settings rather than a defect.
>
> This is a wild shot in the dark, but those "trust chain broken"
> messages could be evidence of a clock issue (the crypto protecting
> most
> major domains these days relies on agreed time). Make sure your
> computer time is set correctly. If you have a local resolver on your
> network, make sure its time is set correctly too. Though it would be
> a
> bit odd for the time to differ between the live CD and the real
> system.
Doing a search through my hourly syslog snippets I found that the
"trust chain broken" issues has gone away since 4am this morning.

>
> Looking at that log, this feels like a DNS or routing issue, not a
> hardware issue (except for the time, maybe). On a different computer,
> look up www.google.com and try pinging its IPv4 address (or any of
> its
> IPv4 addresses) from the problem child. If the ping gets there, you
> have a DNS problem. If the ping doesn't get there, we can look
> further...
I pinged several of google's V4 addresses and several others, here are
the results:

Google:
ping -c5 209.85.128.0
PING 209.85.128.0 (209.85.128.0) 56(84) bytes of data.

--- 209.85.128.0 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4076ms

chris@localhost:~$ ping -c5 google.com
PING google.com (142.250.68.174) 56(84) bytes of data.
64 bytes from 142.250.68.174 (142.250.68.174): icmp_seq=1 ttl=119
time=25.4 ms
64 bytes from 142.250.68.174 (142.250.68.174): icmp_seq=2 ttl=119
time=24.6 ms
64 bytes from 142.250.68.174 (142.250.68.174): icmp_seq=3 ttl=119
time=47.0 ms
64 bytes from 142.250.68.174 (142.250.68.174): icmp_seq=4 ttl=119
time=55.7 ms
64 bytes from 142.250.68.174 (142.250.68.174): icmp_seq=5 ttl=119
time=24.7 ms

Another Google V4 IP
chris@localhost:~$ ping -c5 216.239.32.0
PING 216.239.32.0 (216.239.32.0) 56(84) bytes of data.

--- 216.239.32.0 ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4101ms

chris@localhost:~$ ping -c5 amazon.com
ping: amazon.com: Name or service not known

chris@localhost:~$ ping -c5 amazon.com
PING amazon.com (176.32.103.205) 56(84) bytes of data.
64 bytes from 176.32.103.205 (176.32.103.205): icmp_seq=1 ttl=239
time=58.3 ms
64 bytes from 176.32.103.205 (176.32.103.205): icmp_seq=2 ttl=239
time=58.3 ms
64 bytes from 176.32.103.205 (176.32.103.205): icmp_seq=3 ttl=239
time=58.5 ms
64 bytes from 176.32.103.205 (176.32.103.205): icmp_seq=4 ttl=239
time=58.2 ms
64 bytes from 176.32.103.205 (176.32.103.205): icmp_seq=5 ttl=239
time=58.0 ms

--- amazon.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 58.004/58.269/58.477/0.154 ms

Why Amazon is not found one minute and a successful ping the next I
have no idea.

>
> Regards, K.
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~
> Karl Auer ([hidden email])
> http://www.biplane.com.au/kauer
>
> GPG fingerprint: 2561 E9EC D868 E73C 8AF1 49CF EE50 4B1D CCA1 5170
> Old fingerprint: 8D08 9CAA 649A AFEF E862 062A 2E97 42D4 A2A0 616D
>
>
>
>

--
Chris
31.11972; -97.90167 (Elev. 1092 ft)
09:22:55 up 9:38, 1 user, load average: 1.13, 1.12, 1.13
Description: Ubuntu 20.04.1 LTS, kernel 5.4.0-48-generic


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