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Thread: No internet at all after using a live linux distribution (Tail)

  1. #1
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    No internet at all after using a live linux distribution (Tail)

    I have used Tail booting a USB key. When I have start again my PC, Windows 10 works correctly (connecting the internet normaly) but no more internet connection (nor wired nor wifi) on Lubuntu!


    How to fix that?


    Thank you for your help.
    Last edited by QIII; June 22nd, 2020 at 07:56 PM. Reason: Default font

  2. #2
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    Re: No internet at all after using a live linux distribution (Tail)

    What have you tried so far?
    Which forum posts did you follow already?

    We can't read your mind. What is "Tail"? Could you mean "Tails" or is "Tail" a new adult-centered distro?

    If you need steps for troubleshooting, ... https://blog.jdpfu.com/2013/03/01/li...101-networking has some, in order, to figure out where the issue may be. Often the internet is fine and only DNS has been broken. Troubleshooting the wrong thing wastes time.

  3. #3
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    Re: No internet at all after using a live linux distribution (Tail)

    Lubuntu should not be affected by what you do with a live linux system.

    I am not a networking expert, and I think you need help from such a person, who might know what setting or blacklisting, that might affect you after using Tails.

    In the meantime, while waiting for an answer, you can check, if a live Lubuntu session can connect (at least via wired internet).
    Last edited by sudodus; June 18th, 2020 at 03:23 PM. Reason: ninja'd by TheFu ;-)

  4. #4
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    Re: No internet at all after using a live linux distribution (Tail)

    I have tried the live Lubuntu 20.04 on a usb key : it can connnect to the internet.

    Here is commands I have typed :

    Code:
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ sudo ip link set enp2s0 down
    [sudo] Mot de passe de gerard : 
    Cannot find device "enp2s0"
    
    
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ ifconfig
    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  (Boucle locale)
            RX packets 14154  bytes 1439249 (1.4 MB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 14154  bytes 1439249 (1.4 MB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ uname -a
    Linux gerard-HP-Laptop-15-db0xxx 4.15.0-106-generic #107-Ubuntu SMP Thu Jun 4 11:27:52 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
    
    
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ lspci -k -nn | grep -A 3 -i net
    02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
        Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:84ac]
        Kernel modules: r8168
    03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]
        Subsystem: Hewlett-Packard Company Device [103c:8319]
        Kernel modules: rtl8723de
    
    
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ ifconfig -a
    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  (Boucle locale)
            RX packets 42465  bytes 4727783 (4.7 MB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 42465  bytes 4727783 (4.7 MB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

  5. #5
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    Re: No internet at all after using a live linux distribution (Tail)

    Why?
    Code:
    sudo ip link set enp2s0 down
    that turns off the NIC. No networking will happen. That assumes enp2s0 is the correct device. That certainly wasn't in the link provided.

    Assuming you've booted the OS instance you want to troubleshoot, connect it to a wired ethernet and follow the steps outlined in my link above. Report back with the actual commands AND the output.

    If you can't ping your local router using a LAN IP address, we'll head in a different direction than if you can ping 8.8.8.8. But we need facts to decide stuff.

    Please.

  6. #6
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    Re: No internet at all after using a live linux distribution (Tail)

    @TheFu : Thank you for help.

    1) As you can see : sudo ip link set enp2s0 down is followed by Cannot find device "enp2s0", I did't really know what I was doing.

    2) I can't connect it to a wired ethernet on the system I want to troubleshoot.

    I've tried many things (from your link)



    Code:
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ ip addr
    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
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ route -n
    Table de routage IP du noyau
    Destination     Passerelle      Genmask         Indic Metric Ref    Use Iface
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ dmesg |grep eth[0-9]
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ sudo lshw -C network
    [sudo] Mot de passe de gerard : 
      *-network NON-RÉCLAMÉ     
           description: Ethernet controller
           produit: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           fabriquant: Realtek Semiconductor Co., Ltd.
           identifiant matériel: 0
           information bus: pci@0000:02:00.0
           version: 15
           bits: 64 bits
           horloge: 33MHz
           fonctionnalités: pm msi pciexpress msix bus_master cap_list
           configuration: latency=0
           ressources: portE/S:3000(taille=256) mémoire:f0b04000-f0b04fff mémoire:f0b00000-f0b03fff
      *-network NON-RÉCLAMÉ
           description: Network controller
           produit: Realtek Semiconductor Co., Ltd.
           fabriquant: Realtek Semiconductor Co., Ltd.
           identifiant matériel: 0
           information bus: pci@0000:03:00.0
           version: 00
           bits: 64 bits
           horloge: 33MHz
           fonctionnalités: pm msi pciexpress cap_list
           configuration: latency=0
           ressources: portE/S:2000(taille=256) mémoire:f0a00000-f0a0ffff
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ ifconfig -a
    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  (Boucle locale)
            RX packets 2410  bytes 233255 (233.2 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 2410  bytes 233255 (233.2 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ more /etc/resolv.conf
    # Generated by NetworkManager
    nameserver 127.0.0.53
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ lsb_release -a
    No LSB modules are available.
    Distributor ID:    Ubuntu
    Description:    Ubuntu 18.04.4 LTS
    Release:    18.04
    Codename:    bionic


  7. #7
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    Re: No internet at all after using a live linux distribution (Tail)

    "NON-RÉCLAMÉ" means "UNCLAIMED".

    Somehow your installed system lost the drivers for both devices.

  8. #8
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    Re: No internet at all after using a live linux distribution (Tail)

    I also think that in a certain way system has lost drivers. But how to reinstall these drivers?

  9. #9
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    Re: No internet at all after using a live linux distribution (Tail)

    When running Tails, did you manually go and delete stuff?
    Assuming you rebooted the system and that didn't fix anything?

    Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 is the driver you need to locate.
    It is usually automatically loaded as either r8169.ko or r8168.ko and both are included with the kernel. The card revision seems to dictate which of the 68 or 69 driver is needed. Here's mine:
    Code:
    $ sudo lspci -vk |perl -lne 'print if /Ethernet|Network/ .. /^[\w]*$/' 
    02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
            Subsystem: Gigabyte Technology Co., Ltd Onboard Ethernet
            Flags: bus master, fast devsel, latency 0, IRQ 26
            I/O ports at e000 [size=256]
            Memory at f7e00000 (64-bit, non-prefetchable) [size=4K]
            Memory at f0000000 (64-bit, prefetchable) [size=16K]
            Capabilities: [40] Power Management version 3
            Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
            Capabilities: [70] Express Endpoint, MSI 01
            Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
            Capabilities: [d0] Vital Product Data
            Capabilities: [100] Advanced Error Reporting
            Capabilities: [140] Virtual Channel
            Capabilities: [160] Device Serial Number 01-00-00-00-68-7c-00-00
            Capabilities: [170] Latency Tolerance Reporting
            Kernel driver in use: r8169
            Kernel modules: r8169
    Note the revision, 0C. Yours says revision "15", so using r8169 would be my best guess. If the r8168 driver tries to load (check dmesg), you may need to blacklist it in the /etc/modprobe.d/blacklist.local file. There are lots of blacklisting examples in that directory.

    The fact that those have gone missing means there is a bigger problem with your storage. Check the disk for failures. Drivers included with the kernel don't just "disappear."

    My mistake - Update: command is modprobe
    You could try doing a sudo modprobe r8169 and seeing if that loads the driver. Check that with the lspci command (get the device name), then bring that network interface up.

    Some realtek NICs need to have custom built drivers. If you google RTL8111/8168/8411 rev 15 ubuntu XX.YY, you should find any specific instructions. https://ubuntuforums.org/showthread.php?t=2415415 is for 18.10. I used 18.04 for "XX.YY" in my search.
    Last edited by TheFu; June 19th, 2020 at 03:37 PM. Reason: s/modprob/modprobe/

  10. #10
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    Re: No internet at all after using a live linux distribution (Tail)

    Here is what I get :


    Code:
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ sudo modprob r8169[sudo] Mot de passe de gerard : 
    sudo: modprob : commande introuvable

    and
    Code:
    (base) gerard@gerard-HP-Laptop-15-db0xxx:~$ lspci -k -nn | grep -A 3 -i net02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
    	Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:84ac]
    	Kernel modules: r8168
    03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:d723]
    	Subsystem: Hewlett-Packard Company Device [103c:8319]
    	Kernel modules: rtl8723de

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