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  1. #1
    Linux Newbie blnl's Avatar
    Join Date
    Jan 2009
    Location
    The Netherlands
    Posts
    207

    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 blnl; 10-10-2018 at 09:07 AM.
    Fedora27.GNOME@Dell_Latitude_E7440
    Fedora26.MATE@HP_Compaq_DC7100

  2. #2
    Linux Newbie blnl's Avatar
    Join Date
    Jan 2009
    Location
    The Netherlands
    Posts
    207
    -->
    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

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