cmst broke my internet connection
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  1. #1
    Join Date
    Jan 2010
    Location
    The Netherlands
    Age
    47
    Posts
    260
    Linux (Fedora) Firefox 62.0

    cmst broke my internet connection

    Today, out of sheer curiosity, I installed cmst application. It turned out to be a huge mistake.
    Because it was not useful to me, I removed cmst immediately after installing it. I could not have imagined that this small experiment will cause me so much headache.

    Now I have no internet access anymore. My PC does connect to the router, I can access my NAS directories and files, but nothing form the WWW gets through. There is a question mark in the notification area, where WiFi icon is supposed to be.

    I managed to find this command line workaround, that enables the WWW access:
    Code:
    [root@E7440-DELL home]# ping -c 2 www.google.com
    ping: www.google.com: Name or service not known
    [root@E7440-DELL home]# ifconfig -a
    eno1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
            ether 34:e6:d7:16:c1:2e  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
            device interrupt 20  memory 0xf7e00000-f7e20000  
    
    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 772  bytes 60832 (59.4 KiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 772  bytes 60832 (59.4 KiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.1.221  netmask 255.255.255.0  broadcast 192.168.1.255
            inet6 fe80::3f5:5f8e:81ff:da74  prefixlen 64  scopeid 0x20<link>
            ether 80:19:34:71:8e:e6  txqueuelen 1000  (Ethernet)
            RX packets 139  bytes 20774 (20.2 KiB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 122  bytes 15067 (14.7 KiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    [root@E7440-DELL home]# dhclient wlp2s0
    [root@E7440-DELL home]# ping -c 2 www.google.com
    PING www.google.com (216.58.212.132) 56(84) bytes of data.
    64 bytes from ams15s21-in-f4.1e100.net (216.58.212.132): icmp_seq=1 ttl=57 time=27.4 ms
    64 bytes from ams15s21-in-f4.1e100.net (216.58.212.132): icmp_seq=2 ttl=57 time=27.3 ms
    
    --- www.google.com ping statistics ---
    2 packets transmitted, 2 received, 0% packet loss, time 1001ms
    rtt min/avg/max/mdev = 27.389/27.399/27.410/0.165 ms
    [root@E7440-DELL home]#
    Still, every time I boot my PC, no internet...
    Each time I must use `dhclient wlp2s0` in order to get the internet access.

    Does anyone know what got broken, and how to fix it?

    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    I just discovered that google search on cmst gives a lot of options, such as:
    • Centre for MicroSystems Technology
    • Certified Manager of Software Testing
    • Certified Master Safe Technician
    • Cornwall Music Service Trust
    • Computational Methods in Science and Technology
    • and many others...


    So, in case you don't know which cmst is to blame. It is none of the above, but this one:
    Code:
    [root@E7440-DELL home]# dnf info cmst
    Last metadata expiration check: 9:31:49 ago on Wed 10 Oct 2018 12:17:55 AM CEST.
    Available Packages
    Name         : cmst
    Version      : 2018.01.06
    Release      : 1.gitd6ee8f8.fc27
    Arch         : x86_64
    Size         : 2.2 M
    Source       : cmst-2018.01.06-1.gitd6ee8f8.fc27.src.rpm
    Repo         : updates
    Summary      : A Qt based GUI front end for the connman connection manager with systemtray icon
    URL          : https://github.com/andrew-bibb/cmst
    License      : MIT
    Description  : Qt GUI for Connman with system tray icon. The program provides graphical user
                 : interface to control the connman daemon. The connman daemon must be started as
                 : you normally would, this program just interfaces with that daemon.
                 : You can see what technologies and services connman has found, and for wifi
                 : services an agent is registered to assist in obtaining the information from
                 : you necessary to logon the wifi service.
    
    [root@E7440-DELL home]#
    Last edited by blnlx; 10th October 2018 at 09:06 AM.
    Fedora27.GNOME@Dell_Latitude_E7440
    Fedora26.MATE@HP_Compaq_DC7100

  2. #2
    Join Date
    Jan 2010
    Location
    The Netherlands
    Age
    47
    Posts
    260
    Linux (Fedora) Firefox 62.0

    Re: cmst broke my internet connection

    I don't know if this is the right way to fix it, but after adding `dhclient wlp2s` in /etc/sysconfig/network everything works fine.
    Code:
    [root@E7440-DELL home]# cat /etc/sysconfig/network
    # Created by anaconda
    NETWORKING=yes
    
    dhclient wlp2s0
    Fedora27.GNOME@Dell_Latitude_E7440
    Fedora26.MATE@HP_Compaq_DC7100

  3. #3
    tempest766 Guest

    Re: cmst broke my internet connection

    Quote Originally Posted by blnlx
    I don't know if this is the right way to fix it, but after adding `dhclient wlp2s` in /etc/sysconfig/network everything works fine.
    Code:
    [root@E7440-DELL home]# cat /etc/sysconfig/network
    # Created by anaconda
    NETWORKING=yes
    
    dhclient wlp2s0
    Ummm...no...
    the /etc/sysconfig/* files are only to define symbols used in other scripts. Don't execute programs within them

    You need to reconcile the problem within NetworkManager. nmcli is the command line interfact to NetworkManager. Research its use to fix your problem.
    Last edited by tempest766; 12th October 2018 at 05:35 AM. Reason: misspelling

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