Hi Gottfried, Sorry, this command I suggested (`sudo herd restart network-manager`) was incorrect. The one given by Paren, `sudo herd restart networking`, is the right one. Try it. > I connect my laptop via ethernet cable, LAN, to a router And I assume you already tried re-plugging it? > gfp@Tuxedo ~$ `nmcli connection down \ > && nmcli connection up ` > > -bash: command substitution: line 1: syntax error near unexpected > token `newline' > -bash: command substitution: line 1: `nmcli connection down > name> ' > > .................................................................... > 9. > gfp@Tuxedo ~$ `nmcli connection down \ > && nmcli connection up `. > > -bash: command substitution: line 1: syntax error near unexpected > token `&&' -bash: command substitution: line 1: `nmcli connection > down name> && nmcli connection up ' > -bash: .: filename argument required > .: usage: . filename [arguments] > > I am not sure how the command should look like. Arnaud surely wanted you to replace the "" part with the name of an actual connection on your system. It seems a bridge (aka a virtual connection) under the name "virbr0" somehow got created on your system. You could try running nmcli connection down virbr0 && nmcli connection up enp53s0 Alternatively, you could even try sudo ip link del virbr0 to remove this mysterious virtual bridge instead of disabling it > There is no possibility shown to enable networking again, no button > to click.... Not even a button to turn it off? Perhaps there's at least some helpful context menu available when right-clicking? > 5. > nmcli g > STATE CONNECTIVITY WIFI-HW WIFI WWAN-HW WWAN > connected (local only) limited missing enabled missing enabled > > > Does this mean WIFI is on my lapttop enabled? > If yes, how can I switch it off? I guess it tells you that WiFi is enabled in software but also that no WiFi hardware is available to Network Manager. Which means it's not going to use WiFi anyway. If you want to also disable WiFi in software (only practically useful when Network Manager has access to some WiFi hardware), you can run nmcli radio wifi off as per nmcli's manpage. Wojtek -- (sig_start) website: https://koszko.org/koszko.html PGP: https://koszko.org/key.gpg fingerprint: E972 7060 E3C5 637C 8A4F 4B42 4BC5 221C 5A79 FD1A ♥ R29kIGlzIHRoZXJlIGFuZCBsb3ZlcyBtZQ== | ÷ c2luIHNlcGFyYXRlZCBtZSBmcm9tIEhpbQ== ✝ YnV0IEplc3VzIGRpZWQgdG8gc2F2ZSBtZQ== | ? U2hhbGwgSSBiZWNvbWUgSGlzIGZyaWVuZD8= -- (sig_end) On Wed, 12 Apr 2023 10:54:20 +0000 Gottfried wrote: > Hi, > thanks for help, > > sorry , I forgot to say that: > > I connect my laptop via ethernet cable, LAN, to a router > --------------------------------------------------------------------- > 1. > gfp@Tuxedo ~$ nmcli > virbr0: connected (externally) to virbr0 > "virbr0" > bridge, 52:54:00:16:E9:74, sw, mtu 1500 > inet4 192.168.100.1/24 > route4 192.168.100.0/24 metric 0 > > enp53s0: unavailable > "Realtek RTL8111/8168/8411" > ethernet (r8169), D4:93:90:07:A2:AD, hw, mtu 1500 > > ---------------------------------------------------------------------- > > 2. > Use "nmcli device show" to get complete information about known devices and > "nmcli connection show" to get an overview on active connection profiles. > > Consult nmcli(1) and nmcli-examples(7) manual pages for complete usage > details. > > ........................................................................... > 3. > gfp@Tuxedo ~$ nmcli device show > GENERAL.DEVICE: virbr0 > GENERAL.TYPE: bridge > GENERAL.HWADDR: 52:54:00:16:E9:74 > GENERAL.MTU: 1500 > GENERAL.STATE: 100 (connected (externally)) > GENERAL.CONNECTION: virbr0 > GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/3 > IP4.ADDRESS[1]: 192.168.100.1/24 > IP4.GATEWAY: -- > IP4.ROUTE[1]: dst = 192.168.100.0/24, nh = > 0.0.0.0, mt = 0 > IP6.GATEWAY: -- > > GENERAL.DEVICE: enp53s0 > GENERAL.TYPE: ethernet > GENERAL.HWADDR: D4:93:90:07:A2:AD > GENERAL.MTU: 1500 > GENERAL.STATE: 20 (unavailable) > GENERAL.CONNECTION: -- > GENERAL.CON-PATH: -- > WIRED-PROPERTIES.CARRIER: off > IP4.GATEWAY: -- > IP6.GATEWAY: -- > > ...................................................................... > > > 4. > gfp@Tuxedo ~$ nmcli connection down \ > && nmcli connection up > -bash: syntax error near unexpected token `&&' > ----------------------------------------------------------------------- > gfp@Tuxedo ~$ nmcli --version > nmcli tool, version 1.41.2 > ........................................................................ > > 5. > nmcli g > STATE CONNECTIVITY WIFI-HW WIFI WWAN-HW WWAN > connected (local only) limited missing enabled missing enabled > > > Does this mean WIFI is on my lapttop enabled? > If yes, how can I switch it off? > > ............................................................................ > 6. > `nmcli connection down \ > && nmcli connection up `. > > Do I have to include the "dot" at the end? > I guess it shows the end of the sentence. > > ........................................................................ > 7. > gfp@Tuxedo ~$ nmcli c > NAME UUID TYPE DEVICE > lo 7a147fe2-d819-4316-8fc3-5048760b8449 loopback -- > virbr0 3806cfd9-88d8-4640-b159-171587357668 bridge virbr0 > Wired connection 1 84733337-c8dc-3c39-8b73-c05ae193c799 ethernet -- > > .............................................................................. > > 8. > gfp@Tuxedo ~$ `nmcli connection down \ > && nmcli connection up ` > > -bash: command substitution: line 1: syntax error near unexpected token > `newline' > -bash: command substitution: line 1: `nmcli connection down name> ' > > .................................................................... > 9. > gfp@Tuxedo ~$ `nmcli connection down \ > && nmcli connection up `. > > -bash: command substitution: line 1: syntax error near unexpected token `&&' > -bash: command substitution: line 1: `nmcli connection down name> && nmcli connection up ' > -bash: .: filename argument required > .: usage: . filename [arguments] > > I am not sure how the command should look like. > ....................................................................... > > gfp@Tuxedo ~$ sudo herd restart network-manager > Password: > herd: service 'network-manager' could not be found > > I am using MATE desktop > > clicking the icon network in the menu line > shows > > ethernet: > device: enp53s0 > MTU: automatic > > There is no possibility shown to enable networking again, no button to > click.... > > > > Kind regards > > Gottfried > > > > > Am 11.04.23 um 17:48 schrieb Arnaud: > > Hi, > > > > It depends on how you connect to the Internet. > > > > On a laptop and with the default configuration, you are probably using > > Network Manager (which you can check by running `nmcli`). > > > > If you use Network Manager, you can probably use the following instead > > of rebooting: > > `nmcli connection down \ > > && nmcli connection up `. > > > > > > Hope that helps, > > > > -- > > Arnaud > >