Mint won't automatically re-connect to internet if it goes down then comes back

[gene0915]

Using 18.3 Cinnamon

I have this weird problem. I have multiple computers in my house. Some are wired, some are wireless. A mixture of Linux Mint and Windows. If my internet ever goes out (or I need to reboot my router), when the internet comes back, Mint won't automatically reconnect like my Windows boxes do. I have to bounce the Mint boxes to get them back online.

Poking around on the internet, I found these commands (guessing this will save me from a reboot):

dhcpcd -k (to kill DHCP) then dhcpcd (without the -k) to have my system grab another IP or simply restarting the network service (service network restart).

Is this normal behavior for Mint or -should- it be reconnecting by itself when the internet comes back up?

[Pjotr]

It should reconnect automatically: this isn't normal.

Please generate an overview of your system like this:

- Launch a terminal window (this is how to launch a terminal window);

- make the terminal window full screen, to avoid chopped lines;

- copy/paste this command into the terminal:

Code: Select all

inxi -Fxz

(if you type: the letter F is a capital letter)

- Press Enter.

- Copy/paste the output in your next message.

[gene0915]

It should reconnect automatically: this isn't normal.

Please generate an overview of your system like this:

- Launch a terminal window (this is how to launch a terminal window);

- make the terminal window full screen, to avoid chopped lines;

- copy/paste this command into the terminal:

Code: Select all

inxi -Fxz

(if you type: the letter F is a capital letter)

- Press Enter.

- Copy/paste the output in your next message.

Attaching a chunk of my syslog file from when the weird network problem was going on.

Code: Select all

System:    Host: server-pc Kernel: 4.13.0-36-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.7 (Gtk 3.18.9-1ubuntu3.3)
           Distro: Linux Mint 18.3 Sylvia
Machine:   System: Gigabyte product: Z170X-UD5 v: Default string
           Mobo: Gigabyte model: Z170X-UD5-CF v: x.x
           Bios: American Megatrends v: F23a date: 06/30/2017
CPU:       Quad core Intel Core i7-7700K (-HT-MCP-) cache: 8192 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 33600
           clock speeds: max: 4500 MHz 1: 4200 MHz 2: 4200 MHz 3: 4200 MHz
           4: 4200 MHz 5: 4200 MHz 6: 4200 MHz 7: 4200 MHz 8: 4200 MHz
Graphics:  Card: Intel Device 5912 bus-ID: 00:02.0
           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1440x900@59.89hz
           GLX Renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2)
           GLX Version: 3.0 Mesa 17.2.8 Direct Rendering: Yes
Audio:     Card Intel Sunrise Point-H HD Audio
           driver: snd_hda_intel bus-ID: 00:1f.3
           Sound: Advanced Linux Sound Architecture v: k4.13.0-36-generic
Network:   Card-1: Intel Ethernet Connection (2) I219-V
           driver: e1000e v: 3.2.6-k bus-ID: 00:1f.6
           IF: enp0s31f6 state: down mac: <filter>
           Card-2: Intel I211 Gigabit Network Connection
           driver: igb v: 5.4.0-k port: d000 bus-ID: 0c:00.0
           IF: enp12s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 80015.7GB (46.3% used)
           ID-1: /dev/sda model: WDC_WD80EFAX size: 8001.6GB
           ID-2: /dev/sdg model: WDC_WD80EFAX size: 8001.6GB
           ID-3: /dev/sdl model: WDC_WD80EFAX size: 8001.6GB
           ID-4: /dev/sdb model: WDC_WD80EFZX size: 8001.6GB
           ID-5: /dev/sdr model: Samsung_SSD_850 size: 256.1GB
           ID-6: /dev/sds model: Samsung_SSD_840 size: 128.0GB
           ID-7: /dev/sde model: HGST_HDN724040AL size: 4000.8GB
           ID-8: /dev/sdo model: HGST_HDN724040AL size: 4000.8GB
           ID-9: /dev/sdj model: HGST_HDN724040AL size: 4000.8GB
           ID-10: /dev/sdf model: HGST_HDN724040AL size: 4000.8GB
           ID-11: /dev/sdk model: HGST_HDN724040AL size: 4000.8GB
           ID-12: /dev/sdi model: TOSHIBA_HDWE140 size: 4000.8GB
           ID-13: /dev/sdc model: TOSHIBA_HDWQ140 size: 4000.8GB
           ID-14: /dev/sdm model: TOSHIBA_HDWQ140 size: 4000.8GB
           ID-15: /dev/sdd model: HGST_HDN724040AL size: 4000.8GB
           ID-16: /dev/sdh model: HGST_HDN724040AL size: 4000.8GB
           ID-17: /dev/sdq model: TOSHIBA_HDWE140 size: 4000.8GB
           ID-18: /dev/sdp model: HGST_HMS5C4040AL size: 4000.8GB
           ID-19: /dev/sdn model: HGST_HMS5C4040AL size: 4000.8GB
Partition: ID-1: / size: 235G used: 23G (10%) fs: xfs dev: /dev/sdr1
           ID-2: swap-1 size: 4.10GB used: 0.00GB (0%) fs: swap dev: /dev/sdr2
RAID:      Device-1: /dev/md0 - active components: online: sdc[8] sdo[0] sdf[6] sdn[11] sdm[7] sdi[10] sdp[4] sdd[2] sde[5] sdh[9] sdk[3] sdj[1] spare: sdq[12]
           Info: raid: 6 report: 12/12 blocks: 39068871680 chunk size: 512k bitmap: true
           Device-2: /dev/md127 - active components: online: sdl[2] sdg[0] sdb[1] sda[4]
           Info: raid: 5 report: 4/4 blocks: 23441685504 chunk size: 512k bitmap: true
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 300 Uptime: 8:22 Memory: 2914.6/15923.0MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 

[Pjotr]

You might try this: temporarily, select the most aggressive update policy (Update Manager - panel: Edit - Update policy) and install all previously withheld level 3 and 4 updates that show up. Then reboot.

[gene0915]

You might try this: temporarily, select the most aggressive update policy (Update Manager - panel: Edit - Update policy) and install all previously withheld level 3 and 4 updates that show up. Then reboot.

3 and 4 were already selected. I'm a bit adventurous so I'm already applying 1,2,3 and 4 level updates as they become available.

[Ricker]

I just click on the Enable Wi-Fi twice (disable / enable) and it will reconnect to the Internet....

[Spearmint2]

Go into Internet Connections, see if you have it checked for "connect to this when available" or similar language.

[gene0915]

Go into Internet Connections, see if you have it checked for "connect to this when available" or similar language.

Yes, that option is checked.