Cannot get online in new install of U Mate

[Odyssey1942]

After reading through several posts in this forum, decided to repost in Newbie. Hope this is OK way to do so?


(Dell XPS 8700 Desktop i7-4790)

[TheFu]

Troubleshooting networking begins by determining where the issue lies. Some simple tests, run in the correct order, will narrow down what the issue might be quickly.

Step 1 - can you ping the router using the router's IP?
ping 192.168.x.x # <--- you need to put in the correct IP address for the router. I have no idea what it is.

Step 2 - can you ping a "well-known" public internet IP?
ping 8.8.8.8 # <---- this is the google public DNS

Step 3 - can you lookup google.com using the name? This is a DNS check
ping google.com

Often, things that appear to be networking issues are just DNS issues. To end users, DNS issues might seem like "all networking is broken", but really it isn't.

So, do those steps in order. Stop at the first that fails and report back. If the first one fails, run these 3 commands and post the output using code tags:
* ifconfig
* route -n
* sudo lshw -C network

Please.
Also, we need to know exactly which version of Ubuntu you are using. Desktop or server, and the version number. Network configuration has changed over time, so how to fix is dependent on the release.

[Odyssey1942]

I have just installed UM into a SSD which dual boots with Win 10 on a HDD. The install seems to have gone OK for the most part, but I am unable to get online.

I have done all the poking, proding, changing, I can find to try but no cigar.

Can ping router OK from another computer, but not from the problem new install.

from the new install:

output from ifconfig:
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether XY:AB:XY:AB:XY:AB txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 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 52355 bytes 3197498 (3.1 MB)
RX errors dropped 0 overruns 0 frame 0
TX packets 52355 bytes 3197498 (3.1 MB)
TX errors dropped 0 overruns 0 carrier 0 collisions 0

Where is the best place to start to get a wired internet connection established? Thanks

(Dell XPS 8700 i7-4790)

[ajgreeny]

Threads merged.

Please do not create duplicate posts; it is confusing for everybody including you and dilutes the responses you get and your ability to understand answers properly.

[Odyssey1942]

Step 1 - can you ping the router using the router's IP?

NO

output from ifconfig:
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether XY:AB:XY:AB:XY:AB txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 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 52355 bytes 3197498 (3.1 MB)
RX errors dropped 0 overruns 0 frame 0
TX packets 52355 bytes 3197498 (3.1 MB)
TX errors dropped 0 overruns 0 carrier 0 collisions 0

route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

sudo lshw -C network
 
  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 0c
       serial: XY:AB:XY:AB:XY:AB
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:18 ioport:d000(size=256) memory:f7200000-f7200fff memory:f2100000-f2103fff
  *-network
       description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Limited
       physical id: 0
       bus info: pci@0000:04:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=bcma-pci-bridge latency=0
       resources: irq:19 memory:f7100000-f7107fff

Bit of a challenge via sneakernet, but hope this is what you need. Apology for the confusion when I "moved" the thread. Nada mas!

[TheFu]

Don't forget to try a different switch port and a different ethernet cable. Also, do other wired devices work on the cable and switch port that isn't working with this computer?

Assuming that works,
driver=r8169
I'd search for solutions around that driver and the specific card in the machine, RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller. I remember there being issues with some cards and that driver.

[Odyssey1942]

Thanks for your quick response. I am replying from the Windows boot on the same dualboot computer, so the connection from the computer to the router/internet is working well.

So it isn't the connection, and I assume it isn't the card and driver, unless the driver needs something for Linux that it doesn't need for Windows.

Does this help narrow down the issue?

Edit: neglected to give Ubuntu info. It is Ubuntu MATE 18.04.1

found this also:

https://forums.linuxmint.com/viewtopic.php?t=234367

[TheFu]

The linux driver has nothing to do with the Windows driver.

You have this card: RTL8111/8168/8411
But the driver selected is for a r8169.
See the possible problem? If I google for RTL8111/8168/8411 ubuntu 18.04 ... there seem to be many issues reported with that card. I avoid realtek NICs for a number of reasons.

https://askubuntu.com/questions/1043...on-new-desktop says that switching to the r8168 driver might be the fix. You'll need to get some networking on the system (wifi?), then run:

sudo apt-get update
sudo apt-get install r8168-dkms
sudo reboot

It should work. Be certain to fully patch the system now -

sudo apt upgrade

Please let us know if this solves it. If not, someone else should be able to help.

[Odyssey1942]

Now trying to establish WiFi, but have hit a wall hard!

I put a USB WiFi receiver in and restarted. No automatic connectivity (should the adapter have shown?), so I opened NetWork Connections and clicked on the "+" which opened:

Editing WiFi Connection 1

and it seems I will need some assistance in selecting the tabs and data points that need to be filled in, AND in finding the necessary information to be supplied. The two that I think seem most relevant are
WiFi tab. and
IPv4 tab

Because I do not have connectivity, I am not posting screen captures, but I assume that anyone who understands this stuff will know which of the boxes need to be filled in, and how to find the data. Or perhaps to guide on a better way to establish WiFi connectivity?

Your assistance is humbly requested. Thanks

[Dennis N]

Comments:

With never-before-used USB adapter, it initially won't connect automatically. If there is no other connection, you probably expect to see a popup message "wireless networks available". In my experience, this will happen as soon as you plug it in and it's detected - no restart necessary. Then, you would have to click on the network panel icon, find the adapter in the "Wireless connections" section, and then "Connect". Then you only need supply the wireless network password. Shouldn't be necessary to edit any network connections, I would think.

Just wondering: Did r8168-dkms work for your ethernet?