Linux Lite Forums
Hardware - Support => Network => Topic started by: jimc on March 18, 2023, 08:48:15 PM
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I am pushing 80 so I am writing this offline because I am concerned it makes sense and I want it to reread it before posting.
First of all. I have an older laptop that I use, it has 2 partition, one is Windows 7 and it seems to be OK. The other is Linux Lite. It is an older version but I can't find a version number, I would say a couple years old.
A couple of years ago I began to have cognitive difficulties and modified Linux Lite desktop so there would as few icons in other words I change the program icons by removing the icon and making the title something meaningful to me.
At some point I realized that I had lost my connection to the internet. In working on that I realized that I have a connection to the local router and I can see all of the other computers in my comcast community.
However, I cannot go to the browser and put in a URL and get a connection. I do have a simple website on my personal network. That I connect with.
It sound to me as if I have problem connecting with a DNS server. I have tried several URL's for DNS servers.
None of which worked.
If you want to help me keep in mind that I have to read and reply on one partition and test on another.
Thanks to anyone who can provide any help I would prefer step by step instructions.
Jim
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Jim,
Can you run some commands from a terminal window ?
Press the three keys 'Ctrl' 'Alt' and 'T' simultaneously to open a terminal window.
To check your Linux Lite version enter this command followed by enter
cat /etc/llver
Versions 4.x, 5.x and 6.x are currently supported, although version 4.x is end of support in April 2023.
Version 3.x and earlier are out of support and should not be used to connect to the Internet.
To test basic internet connection and DNS function, run some commands in the terminal window.
Copy the commands carefully.
ping 8.8.8.8followed by enter
Allow this to run for about 5 seconds, then terminate command by pressing 'Ctrl' and 'C' together
You should see something like
PING 8.8.8.8 (8.8.8.8 ) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=118 time=18.2 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=118 time=18.2 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=118 time=18.0 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=118 time=18.4 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=118 time=18.5 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=118 time=18.0 ms
^C
--- 8.8.8.8 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5006ms
rtt min/avg/max/mdev = 17.963/18.210/18.499/0.208 ms
If the number of packets transmitted = packets received, then you have a basic connection and can test DNS with this.
ping google.comfollowed by enter.
If you get results similar to the text below, DNS is working, so allow it to run for about 5 seconds, then use Ctrl and C as before.
PING google.com (142.250.180.14) 56(84) bytes of data.
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=1 ttl=118 time=16.5 ms
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=2 ttl=118 time=17.3 ms
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=3 ttl=118 time=16.6 ms
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=4 ttl=118 time=17.2 ms
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=5 ttl=118 time=16.7 ms
64 bytes from lhr25s32-in-f14.1e100.net (142.250.180.14): icmp_seq=6 ttl=118 time=17.0 ms
^C
--- google.com ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5007ms
rtt min/avg/max/mdev = 16.496/16.869/17.299/0.307 ms
But if you get something like
ping: google.com: Temporary failure in name resolutionIt indicates DNS is not working.
If you report the results of the above the next steps can be determined.
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Responses:
"cat/etc/llver"
'Linux Lite 5.6'
"ping 8.8.8.8"
'Destination host unreachable'
"Ping google.com"
'Temporary failure in name resolution'
That is it so far, next.
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Looks like you may have a problem getting off your local network. The following commands show the interface configuration, the routing table, local devices and test connection to the router.
Please can you run them and post the results ?
ifconfig -a
route
arp -a
ping _gatewayAllow this one to run for 5 seconds and terminate command with 'ctrl c' as before'
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Here is the latest out put. I have a local wifi and an ethernet connection running at the same time. the machine name is "K501D"
"ifconfig -a"
enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255
inet6 fe80::acc8:5f3a:3602:c537 prefixlen 64 scopeid 0x20<link>
inet6 2601:1c2:4b00:16c0::7a24 prefixlen 128 scopeid 0x0<global>
inet6 2601:1c2:4b00:16c0:57ae:ef7c:6d22:6e35 prefixlen 64 scopeid 0x0<global>
ether e0:cb:4e:82:1a:c1 txqueuelen 1000 (Ethernet)
RX packets 105 bytes 37420 (37.4 KB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 83 bytes 12002 (12.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ipv6leakintrf0: flags=195<UP,BROADCAST,RUNNING,NOARP> mtu 1500
inet6 fe80::87d0:9149:5c28:374c prefixlen 64 scopeid 0x20<link>
inet6 fdeb:446c:912d:8da:: prefixlen 64 scopeid 0x0<global>
ether 2a:74:4c:90:fc:95 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7 bytes 2060 (2.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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 2630 bytes 370116 (370.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2630 bytes 370116 (370.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.194 netmask 255.255.255.0 broadcast 10.0.0.255
inet6 2601:1c2:4b00:16c0::1be8 prefixlen 128 scopeid 0x0<global>
inet6 2601:1c2:4b00:16c0:18c4:6cfa:e0c4:3c7 prefixlen 64 scopeid 0x0<global>
inet6 fe80::2a69:3f3c:9efc:1bba prefixlen 64 scopeid 0x20<link>
ether 00:25:d3:f7:7e:15 txqueuelen 1000 (Ethernet)
RX packets 150 bytes 44091 (44.0 KB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 106 bytes 17985 (17.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
'route'
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default jim-K50ID 0.0.0.0 UG 100 0 0 enp3s0
default jim-K50ID 0.0.0.0 UG 600 0 0 wlp4s0
10.0.0.0 0.0.0.0 255.255.255.0 U 100 0 0 enp3s0
10.0.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp4s0
link-local 0.0.0.0 255.255.0.0 U 1000 0 0 wlp4s0
'arp -a'
? (66.203.127.14) at <incomplete> on enp3s0
? (10.0.0.238) at 64:e0:03:81:39:e7 [ether] on enp3s0
jim-K50ID (10.0.0.1) at e0:cb:4e:82:1a:c1 [ether] on wlp4s0
? (66.203.127.16) at <incomplete> on enp3s0
? (10.0.0.100) at 90:fb:a6:2b:2f:6d [ether] on enp3s0
? (89.44.169.141) at <incomplete> on enp3s0
? (89.44.169.136) at <incomplete> on enp3s0
? (10.0.0.130) at 00:1d:fe:e8:17:cc [ether] on enp3s0
'
ping _gateway;
PING _gateway(_gateway (fdeb:446c:912d:8da::1)) 56 data bytes
ACCEPTED COMMAND BUT NEVER RETURNED TO THE COMMAND LINE
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A few questions arise from that.
Do you set your network parameters manually (for example through the GUI or by editing system files) or are you on DHCP ?
If you set manually, how have you done this ?
If you have a DHCP server, is it your router or another system on your local network?
What is the IP address of the router you would expect your machine to be using to get to the Internet?
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A few questions arise from that.
Do you set your network parameters manually (for example through the GUI or by editing system files) or are you on DHCP ?
I have tried both ways. With the same result.
If you set manually, how have you done this ?
I edited it manually with text editor.
If you have a DHCP server, is it your router or another system on your local network?
It used to be on my router but I have tried to shift to one online because the router is COMCAST and I don't trust them.
What is the IP address of the router you would expect your machine to be using to get to the Internet?
1.1.1.1
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Jim,
It used to be on my router but I have tried to shift to one online because the router is COMCAST and I don't trust them.
I can't for the moment think how a remote online DHCP server would work for a typical home network as DHCP is a local protocol used to allocate valid IP addresses to a system on a LAN. Perhaps you are confusing DHCP and DNS ?
1.1.1.1
Are you sure about this ? If this is really the address used by the router, then your Linux system cannot communicate with the router as they appear to be on different subnets. This would explain your symptoms.
I have tried both ways. With the same result.
I edited it manually with text editor.
Would you be prepared to undo all the manual changes you've made and set your ethernet port to use DHCP to pick up an address from the router ? If you cannot recall all the manual changes you've made, switching to DHCP may be enough by itself, but cannot be sure.
Just for comparison, are you doing similar changes when you boot the system as Windows ?
Please run Windows, open a terminal and post the results of
ipconfigroute printarp -a
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Interface: 10.0.0.172 --- 0xa
Internet Address Physical Address Type
10.0.0.1 bc-d1-65-a0-b4-0f dynamic
10.0.0.100 90-fb-a6-2b-2f-6d dynamic
10.0.0.254 00-05-04-03-02-01 dynamic
10.0.0.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
Interface: 10.0.0.194 --- 0xb
Internet Address Physical Address Type
10.0.0.1 bc-d1-65-a0-b4-0f dynamic
10.0.0.100 90-fb-a6-2b-2f-6d dynamic
10.0.0.254 00-05-04-03-02-01 dynamic
10.0.0.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
Interface: 192.168.56.1 --- 0x17
Internet Address Physical Address Type
192.168.56.255 ff-ff-ff-ff-ff-ff static
224.0.0.22 01-00-5e-00-00-16 static
224.0.0.252 01-00-5e-00-00-fc static
239.255.255.250 01-00-5e-7f-ff-fa static
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Jim,
Is that your Windows arp cache (arp -a)?
It looks like a conventional network set up.
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Yes it is.
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Let me be clear.
I want the internet to be usable.
My concern is that I will loose the desktop I modified in trying to fix the internet problem.
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Jim,
Please try reverting to DHCP on your ethernet connection.
Or if you have not messed with the wireless interface set up, disconnect the ethernet cable and see if you can connect.
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I have disconnected the ethernet cable. How do I revert to DHCP?
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Jim,
Does the system connect to the Internet using wireless while the ethernet cable is disconnected ?
To revert to DHCP, ideally you would undo any changes you made since it last worked using the ethernet cable.
If you don't know what changes you made, then the following steps may override them.
Click the network icon.
On a typical desktop, this is at the bottom right, near the clock but your desktop may be different.
Click 'Edit Connections'
You should see 'Ethernet' and 'Wi-Fi' and perhaps others.
Below 'Ethernet', you should see a named connection, typically 'Wired connection 1'
Highlight 'Wired connection 1', then click the cog icon.
On the window that opens, check that this is the interface you want to change.
Select the 'IPv4 Settings' tab
Click the 'Method' pull down and select 'Automatic (DHCP)', then save and exit out
You may need to reboot.
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I apologize for this, I do appreciate your attempt to help me.
I have been using personal computers since 1980's but my brain, what's left of it, can't cope with this anymore.
I am just too confused to do anything more. The fact that I can't make any sense of what is happening and why.
I am sorry I wasted your time.
The Internet is dead to me. It could be a wonderful tool but it is not. I still have a Windows partition that still works so I can send and receive email and look at the news that will be enough.
Anyway, thanks for the effort I appreciate it.
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Jimc,
No need to apologise. I understand it was awkward to be switching between Windows and Linux multiple times in order to try things out and report back.
I certainly don't think any of my time was wasted. For what it is worth, I thought you were close to making your Linux Lite connection work again and if you want to keep going just let us know.
Good luck.
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I am willing to continue but I do get very frustrated when my brain my brain just quits working.
Could you possibly copy and paste your suggestions and comments into an email client and send it to me that way I can get it and follow directions from there.
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Jimc
I've sent you a message.
This should be visible on the forum if you check 'My Messages' and a copy should have gone to your registered email address.
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That didn't do anything different.