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    Can't connect CentOS 7 to network

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    linux centos centos 7 nmtui
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    • NerdyDadN
      NerdyDad @travisdh1
      last edited by

      @travisdh1 said in Can't connect CentOS 7 to network:

      @NerdyDad said in Can't connect CentOS 7 to network:

      I am also not getting any activity lights on the network card. Is this normal in Linux?

      Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

      Possibly a driver issue then?

      travisdh1T 1 Reply Last reply Reply Quote 0
      • travisdh1T
        travisdh1 @NerdyDad
        last edited by

        @NerdyDad said in Can't connect CentOS 7 to network:

        @travisdh1 said in Can't connect CentOS 7 to network:

        @NerdyDad said in Can't connect CentOS 7 to network:

        I am also not getting any activity lights on the network card. Is this normal in Linux?

        Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

        Possibly a driver issue then?

        While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

        NerdyDadN 1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @NerdyDad
          last edited by

          @NerdyDad said in Can't connect CentOS 7 to network:

          I am also not getting any activity lights on the network card. Is this normal in Linux?

          Your OS does not change the hardware.

          NerdyDadN 1 Reply Last reply Reply Quote 1
          • NerdyDadN
            NerdyDad @travisdh1
            last edited by

            @travisdh1 said in Can't connect CentOS 7 to network:

            @NerdyDad said in Can't connect CentOS 7 to network:

            @travisdh1 said in Can't connect CentOS 7 to network:

            @NerdyDad said in Can't connect CentOS 7 to network:

            I am also not getting any activity lights on the network card. Is this normal in Linux?

            Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

            Possibly a driver issue then?

            While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

            It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

            driver: e1000e
            version: 3.2.5-k
            firmware-version: 0.12-1
            bus-info: 0000:00:19.0
            supports-statistics: yes
            supports-test: yes
            supports-eeprom-access: yes
            supports-register-dump: yes
            supports-priv-flags: no

            travisdh1T 1 Reply Last reply Reply Quote 0
            • NerdyDadN
              NerdyDad @scottalanmiller
              last edited by

              @scottalanmiller said in Can't connect CentOS 7 to network:

              @NerdyDad said in Can't connect CentOS 7 to network:

              I am also not getting any activity lights on the network card. Is this normal in Linux?

              Your OS does not change the hardware.

              I get that, but wasn't sure if Linux would handle the hardware differently. Thought it was a nuance of Linux vs. Windows.

              NerdyDadN 1 Reply Last reply Reply Quote 0
              • NerdyDadN
                NerdyDad @NerdyDad
                last edited by

                @NerdyDad said in Can't connect CentOS 7 to network:

                @scottalanmiller said in Can't connect CentOS 7 to network:

                @NerdyDad said in Can't connect CentOS 7 to network:

                I am also not getting any activity lights on the network card. Is this normal in Linux?

                Your OS does not change the hardware.

                I get that, but wasn't sure if Linux would handle the hardware differently. Thought it was a nuance of Linux vs. Windows.

                That's like saying that the recent iOS upgrade for your iPhone now made your iPhone water proof. Software doesn't change hardware.

                scottalanmillerS 1 Reply Last reply Reply Quote 0
                • scottalanmillerS
                  scottalanmiller @NerdyDad
                  last edited by

                  @NerdyDad said in Can't connect CentOS 7 to network:

                  @NerdyDad said in Can't connect CentOS 7 to network:

                  @scottalanmiller said in Can't connect CentOS 7 to network:

                  @NerdyDad said in Can't connect CentOS 7 to network:

                  I am also not getting any activity lights on the network card. Is this normal in Linux?

                  Your OS does not change the hardware.

                  I get that, but wasn't sure if Linux would handle the hardware differently. Thought it was a nuance of Linux vs. Windows.

                  That's like saying that the recent iOS upgrade for your iPhone now made your iPhone water proof. Software doesn't change hardware.

                  Are you mocking yourself? LMAO

                  1 Reply Last reply Reply Quote 1
                  • travisdh1T
                    travisdh1 @NerdyDad
                    last edited by

                    @NerdyDad said in Can't connect CentOS 7 to network:

                    @travisdh1 said in Can't connect CentOS 7 to network:

                    @NerdyDad said in Can't connect CentOS 7 to network:

                    @travisdh1 said in Can't connect CentOS 7 to network:

                    @NerdyDad said in Can't connect CentOS 7 to network:

                    I am also not getting any activity lights on the network card. Is this normal in Linux?

                    Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

                    Possibly a driver issue then?

                    While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

                    It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

                    driver: e1000e
                    version: 3.2.5-k
                    firmware-version: 0.12-1
                    bus-info: 0000:00:19.0
                    supports-statistics: yes
                    supports-test: yes
                    supports-eeprom-access: yes
                    supports-register-dump: yes
                    supports-priv-flags: no

                    An Intel e1000e should be fine. Any lights showing on the switch port? No lights on either end = no network.

                    NerdyDadN 1 Reply Last reply Reply Quote 0
                    • NerdyDadN
                      NerdyDad @travisdh1
                      last edited by

                      @travisdh1 said in Can't connect CentOS 7 to network:

                      @NerdyDad said in Can't connect CentOS 7 to network:

                      @travisdh1 said in Can't connect CentOS 7 to network:

                      @NerdyDad said in Can't connect CentOS 7 to network:

                      @travisdh1 said in Can't connect CentOS 7 to network:

                      @NerdyDad said in Can't connect CentOS 7 to network:

                      I am also not getting any activity lights on the network card. Is this normal in Linux?

                      Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

                      Possibly a driver issue then?

                      While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

                      It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

                      driver: e1000e
                      version: 3.2.5-k
                      firmware-version: 0.12-1
                      bus-info: 0000:00:19.0
                      supports-statistics: yes
                      supports-test: yes
                      supports-eeprom-access: yes
                      supports-register-dump: yes
                      supports-priv-flags: no

                      An Intel e1000e should be fine. Any lights showing on the switch port? No lights on either end = no network.

                      No lights.

                      travisdh1T 1 Reply Last reply Reply Quote 0
                      • travisdh1T
                        travisdh1 @NerdyDad
                        last edited by

                        @NerdyDad said in Can't connect CentOS 7 to network:

                        @travisdh1 said in Can't connect CentOS 7 to network:

                        @NerdyDad said in Can't connect CentOS 7 to network:

                        @travisdh1 said in Can't connect CentOS 7 to network:

                        @NerdyDad said in Can't connect CentOS 7 to network:

                        @travisdh1 said in Can't connect CentOS 7 to network:

                        @NerdyDad said in Can't connect CentOS 7 to network:

                        I am also not getting any activity lights on the network card. Is this normal in Linux?

                        Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

                        Possibly a driver issue then?

                        While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

                        It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

                        driver: e1000e
                        version: 3.2.5-k
                        firmware-version: 0.12-1
                        bus-info: 0000:00:19.0
                        supports-statistics: yes
                        supports-test: yes
                        supports-eeprom-access: yes
                        supports-register-dump: yes
                        supports-priv-flags: no

                        An Intel e1000e should be fine. Any lights showing on the switch port? No lights on either end = no network.

                        No lights.

                        Well, we know where the problem is now, but I doubt you'll be able to change the network card in a laptop 😞

                        NerdyDadN 1 Reply Last reply Reply Quote 0
                        • NerdyDadN
                          NerdyDad @travisdh1
                          last edited by

                          @travisdh1 said in Can't connect CentOS 7 to network:

                          @NerdyDad said in Can't connect CentOS 7 to network:

                          @travisdh1 said in Can't connect CentOS 7 to network:

                          @NerdyDad said in Can't connect CentOS 7 to network:

                          @travisdh1 said in Can't connect CentOS 7 to network:

                          @NerdyDad said in Can't connect CentOS 7 to network:

                          @travisdh1 said in Can't connect CentOS 7 to network:

                          @NerdyDad said in Can't connect CentOS 7 to network:

                          I am also not getting any activity lights on the network card. Is this normal in Linux?

                          Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

                          Possibly a driver issue then?

                          While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

                          It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

                          driver: e1000e
                          version: 3.2.5-k
                          firmware-version: 0.12-1
                          bus-info: 0000:00:19.0
                          supports-statistics: yes
                          supports-test: yes
                          supports-eeprom-access: yes
                          supports-register-dump: yes
                          supports-priv-flags: no

                          An Intel e1000e should be fine. Any lights showing on the switch port? No lights on either end = no network.

                          No lights.

                          Well, we know where the problem is now, but I doubt you'll be able to change the network card in a laptop 😞

                          Well crap. I guess I'll use this for a study machine to learn with. I have a few more laptops here that I haven't installed CentOS on yet. I'll test their cards before I install CentOS.

                          wirestyle22W 1 Reply Last reply Reply Quote 1
                          • scottalanmillerS
                            scottalanmiller
                            last edited by

                            Why CentOS on laptops in the first place? That's the least laptop friendly Linux OS I can think of.

                            NerdyDadN 1 Reply Last reply Reply Quote 2
                            • wirestyle22W
                              wirestyle22 @NerdyDad
                              last edited by wirestyle22

                              @NerdyDad said in Can't connect CentOS 7 to network:

                              @travisdh1 said in Can't connect CentOS 7 to network:

                              @NerdyDad said in Can't connect CentOS 7 to network:

                              @travisdh1 said in Can't connect CentOS 7 to network:

                              @NerdyDad said in Can't connect CentOS 7 to network:

                              @travisdh1 said in Can't connect CentOS 7 to network:

                              @NerdyDad said in Can't connect CentOS 7 to network:

                              @travisdh1 said in Can't connect CentOS 7 to network:

                              @NerdyDad said in Can't connect CentOS 7 to network:

                              I am also not getting any activity lights on the network card. Is this normal in Linux?

                              Well, that's even easier, it's a hardware problem. Nothing should ever effect the blinking lights.

                              Possibly a driver issue then?

                              While possible, it's unlikely. The only real exceptoin that comes to mind is Debian with certain closed-source Broadcom drivers. What kind of network card is it, and was it working before?

                              It used to work before as it was my first coming to this company. I later switched to a newer laptop and put this one in the back for storage.

                              driver: e1000e
                              version: 3.2.5-k
                              firmware-version: 0.12-1
                              bus-info: 0000:00:19.0
                              supports-statistics: yes
                              supports-test: yes
                              supports-eeprom-access: yes
                              supports-register-dump: yes
                              supports-priv-flags: no

                              An Intel e1000e should be fine. Any lights showing on the switch port? No lights on either end = no network.

                              No lights.

                              Well, we know where the problem is now, but I doubt you'll be able to change the network card in a laptop 😞

                              Well crap. I guess I'll use this for a study machine to learn with. I have a few more laptops here that I haven't installed CentOS on yet. I'll test their cards before I install CentOS.

                              You would see the NIC light up regardless FYI. It only requires about 2 AMPS of power to light up or something.

                              1 Reply Last reply Reply Quote 2
                              • NerdyDadN
                                NerdyDad @scottalanmiller
                                last edited by

                                @scottalanmiller said in Can't connect CentOS 7 to network:

                                Why CentOS on laptops in the first place? That's the least laptop friendly Linux OS I can think of.

                                I am wanting to build out a network for my house with as minimal cost as possible while also being secure. This laptop I was wanting to use for NextCloud while having another laptop for ldap and another for PLEX.

                                I know that you're going to suggest putting it on a server with XenServer and run each installation as a VM. I have Dell PowerEdge 1950 that I could use, but I don't want to draw that much power and the thing is too noisy to have in the house. It gets too hot for it in the garage.

                                Have any suggestions? Maybe I could use a Dell Optiplex 380 desktop for either XS or bare-metal CentOS?

                                travisdh1T 1 Reply Last reply Reply Quote 0
                                • scottalanmillerS
                                  scottalanmiller
                                  last edited by

                                  Intel NUC is a good way to go. SSD and loads of RAM.

                                  1 Reply Last reply Reply Quote 3
                                  • travisdh1T
                                    travisdh1 @NerdyDad
                                    last edited by

                                    @NerdyDad Intel NUC like @scottalanmiller said, or load XenServer on a laptop (just disable low-power modes in the BIOS.) Quiet and low power, also about the lowest reliability possible. That 1950 would draw more power than running it would be worth. If your serious about a home lab, you might want to pickup a T3500 from Stallard Tech, or a low end server from xByte.

                                    1 Reply Last reply Reply Quote 0
                                    • wirestyle22W
                                      wirestyle22
                                      last edited by

                                      @NerdyDad If power is a concern it's hard to beat a NUC as @scottalanmiller said above. I have a Dell PowerEdge R510 with dual power supplies I got from @BradfromxByte and I honestly didn't see a huge increase in my monthly costs. It runs 24/7.

                                      1 Reply Last reply Reply Quote 1
                                      • scottalanmillerS
                                        scottalanmiller
                                        last edited by

                                        Laptops are a pain to be set up all the time. Hard to cool, hard to place out of the way, look weird.

                                        1 Reply Last reply Reply Quote 1
                                        • stacksofplatesS
                                          stacksofplates @travisdh1
                                          last edited by

                                          @travisdh1 said in Can't connect CentOS 7 to network:

                                          sudo systemctl restart network
                                          

                                          If you're using NetworkManager you should disable the network service. You can run into weird issues with both running. I usually also mask it so someone can't turn it on accidentally (doesn't stop them, just gives them a warning that it's been masked.

                                          systemctl stop network
                                          systemctl disable network
                                          systemctl mask network
                                          

                                          Then restart NetworkManager

                                          1 Reply Last reply Reply Quote 0
                                          • C
                                            cucezo
                                            last edited by

                                            May be there is problem in your laptop like you are using wrong drivers or drivers get corrupted by malware. Thus to fix it delete old one and install new one. There is nothing wrong with any other stuff except laptop. If your are using access point then turn off it for at least 1 minute and try connecting again.If still issue exits then check Dell Latitude E4310 Manual for more troubleshooting suggestions.

                                            1 Reply Last reply Reply Quote 0
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