[SOLVED] 3g & wifi troubles

[arzgi]

Debian 10 Buster.

Acer Aspire V3-112P/R2 laptop.

Using wifi at home, and a 3g dongle elsewhere. Orphaned wvdial worked in stretch, but could not get it to work in Buster, so I use ppp for 3g.

But after 3g usage, boots are just PITA, so slow to bring wifi up.

I use ifplugd, /etc/networking/interfaces:

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source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

allow-hotplug wlp2s0
iface wlp2s0 inet dhcp
    pre-up /usr/sbin/wpa_supplicant -iwlp2s0 -c/etc/wpa_supplicant/wpa_supplicant.conf
    gateway 192.168.1.1
    nameserver 192.168.1.1.

allow-hotplug enp3s0
iface enp3s0 inet dhcp

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[Starting] Restore /etc/resolv.conf if the system crashed before the ppp link was shut down
[Starting] System Logging service...
[Starting] Login Service...
[Starting] Disk Manager
[ OK ] Started Daily Rotation of log files
[ OK ] Trigger anacron every hour
[ OK ] Reached Target Timers
[ OK ] D-Bus System Message Bus
       Starting LSB: Network connection manager...
       Starting WPA supplicant...
[ OK ] Started System Logging service.
[ OK ] Started Restore /etc/resolv.conf if the system crashed before the ppp link was shut down 
[ OK ] Started LSB: network connection manager.
[ OK ] Started Initializing hardware monitoring sensors.
[ OK ] Started WPA supplicant.
       Starting Authorization Manager...
[ OK]  Stared Authorization Manager.
[ OK ] Started Login Service.
[ OK ] Started Disk Manager.
[ 11.266504] Bluetooth hci0: command 0x1000 tx timeout
[  ***] A start job is running for Raise network interfaces (2 min 17 s / 5 min 2 s)

/var/log/boot.log: (part)

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A start job is running for Raise network interfaces (6min 29s / 6min 32s)
A start job is running for Raise network interfaces (6min 30s / 6min 32s)
A start job is running for Raise network interfaces (6min 30s / 6min 32s)
A start job is running for Raise network interfaces (6min 31s / 6min 32s)
A start job is running for Raise network interfaces (6min 31s / 6min 32s)
 A start job is running for Raise network interfaces (6min 32s / 6min 32s)
 Failed to start Raise network interfaces
See 'systemctl status networking.service' for details.
Reached target Network.
Reached target Network is Online.
         Starting LSB: Brings up/down network automatically...
[ OK ] Started Permit User Sessions.
         Starting Hold until boot process finishes up...
         Starting Terminate Plymouth Boot Screen...

#systemctl status networking.service

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● networking.service - Raise network interfaces
   Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor prese
   Active: failed (Result: timeout) since Sun 2019-07-14 15:12:55 EEST; 1h 1min 
     Docs: man:interfaces(5)
  Process: 426 ExecStart=/sbin/ifup -a --read-environment (code=killed, signal=K
 Main PID: 426 (code=killed, signal=KILL)

heinä 14 15:06:25 acer systemd[1]: Starting Raise network interfaces...
heinä 14 15:06:25 acer ifup[426]: ifup: waiting for lock on /run/network/ifstate
heinä 14 15:11:25 acer systemd[1]: networking.service: Start operation timed out
heinä 14 15:11:25 acer ifup[426]: Got signal Terminated, terminating...
heinä 14 15:12:55 acer systemd[1]: networking.service: State 'stop-sigterm' time
heinä 14 15:12:55 acer systemd[1]: networking.service: Killing process 426 (ifup
heinä 14 15:12:55 acer systemd[1]: networking.service: Main process exited, code
heinä 14 15:12:55 acer systemd[1]: networking.service: Failed with result 'timeo
heinä 14 15:12:55 acer systemd[1]: Failed to start Raise network interfaces.

Purged resolvconf, but that had no effect.

What would help?

EDIT: fixed a few typos

[arzgi]

A little progress.

Shortened the timeout in /etc/systemd/system/network-online.target.wants/networking.service, which by default was 5 minutes

Also some net search suggested removing allow-hotplug options from /etc/network/interfaces. Did that too.

Now the boot time is tolerable, but I must start wpa_supplicant manually to get wifi working.

[Head_on_a_Stick]

Now the boot time is tolerable, but I must start wpa_supplicant manually to get wifi working.

Add this line instead of allow-hotplug:

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auto wlp2s0

And that nameserver line is wrong, the configuration requires dns-nameservers and it will only work if the resolvconf package is installed.

I'm not sure if you should add the -B flag to the wpa_supplicant command but I would use the interfaces file itself rather than wpa_supplicant.conf:

https://wiki.debian.org/WiFi/HowToUse#W ... d_WPA2-PSK

[arzgi]

Vau! That was quick, thanks a lot man!

I have to run the final test, start 3g, and then boot without. Altough I have no idea, why does it think resolv.conf is bad, since I start ppp using pon, stop it with poff, then start wifi, check resolv.conf before shutting of. But academic...

Added 'auto' to wlp2s0 already when removed 'allow-hotplug'' -option, but never thought wpa_supplicant should run as daemon.

[arzgi]

Yeah, works like a charm, thanks again HOAS!