Arch Linux

antoyo

Member

Registered: 2012-08-16

Posts: 37

No wireless network for the first 30 seconds

Hello.
Yesterday, I managed to get my wireless network working.
My network card is:

~/ lspci | grep Network
03:00.0 Network controller: Broadcom Corporation BCM4321 802.11a/b/g/n (rev 03)

systemd-analyze show me that some service takes about 30 seconds:

~/ systemd-analyze blame
         31.543s NetworkManager-wait-online.service
           850ms NetworkManager.service
           166ms systemd-udev-trigger.service
           153ms alsa-restore.service
           151ms systemd-logind.service
           147ms systemd-fsck@dev-sdb1.service
           147ms var.mount
           113ms systemd-tmpfiles-setup.service
           113ms systemd-sysctl.service
           102ms home.mount
           100ms systemd-fsck@dev-sdb3.service
           100ms dev-hugepages.mount
            99ms systemd-random-seed-load.service
            98ms systemd-vconsole-setup.service
            96ms systemd-modules-load.service
            92ms dev-mqueue.mount
            90ms sys-kernel-debug.mount
            67ms tmp.mount
            65ms systemd-remount-fs.service
            65ms polkit.service
            50ms systemd-udevd.service
            50ms udisks2.service
            43ms sys-kernel-config.mount
            25ms rtkit-daemon.service
            24ms wpa_supplicant.service
            16ms systemd-journal-flush.service
            13ms systemd-user-sessions.service
            12ms upower.service
            11ms dev-sdb2.swap

If I disable the 30-seconds service, I still have the same problem.
And lshw -C network show:

~/ lshw -C network
  *-network               
       description: Ethernet interface
       produit: MCP65 Ethernet
       fabriquant: NVIDIA Corporation
       identifiant matériel: 6
       information bus: pci@0000:00:06.0
       nom logique: enp0s6
       version: a3
       numéro de série: 0a:f1:56:59:50:d4
       capacité: 1Gbit/s
       bits: 32 bits
       horloge: 66MHz
       fonctionnalités: bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 latency=0 link=no maxlatency=20 mingnt=1 multicast=yes port=MII
       ressources: irq:20 mémoire:f2487000-f2487fff portE/S:30e0(taille=8)
  *-network
       description: Network controller
       produit: BCM4321 802.11a/b/g/n
       fabriquant: Broadcom Corporation
       identifiant matériel: 0
       information bus: pci@0000:03:00.0
       version: 03
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: bus_master cap_list
       configuration: driver=b43-pci-bridge latency=0
       ressources: irq:16 mémoire:f2000000-f2003fff mémoire:f2500000-f25fffff
  *-network
       description: Interface réseau sans fil
       identifiant matériel: 1
       nom logique: wlan0
       numéro de série: 00:1a:73:e7:45:69
       fonctionnalités: ethernet physical wireless
       configuration: broadcast=yes driver=b43 driverversion=3.8.7-1-ARCH firmware=666.2 ip=192.168.1.119 link=yes multicast=yes wireless=IEEE 802.11bg

The only difference in the latest command before I get connected is that the last *-network got the configuration

link=no

instead of:

link=yes

Do you know how I can get my wireless network to start instantly instead of waiting 30 seconds?
Thanks for your help.

WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: No wireless network for the first 30 seconds

I know this thread is several days old, but I figure the lack of feedback indicates this problem is still present.

You have a broadcom card, so have you gone through the broadcom wiki page and tried alternative modules/firmware?  There is a reverse engineered setup called b43.  The module is in the kernel I think, but the firmware can be installed from the AUR.  Maybe this might work better.

Just as a sanity check, can you disable NeworkManager, then connect to the network manually?  Then you should see if, when doing ti manually, any step takes a ridiculously long time, particularly getting the dhcp lease. 

Also, a side note, the service you tried to disable is pulled in as a dependency of NetworkManager.  So unless you disable NetworkManager, it will continue to run this service.  It is simply a service that doens't actually complete until the network is fully connected, so that other services that depend on the network being connected (and don't deal well with starting while not connected) will have a service dependency to start against.

antoyo

Member

Registered: 2012-08-16

Posts: 37

Re: No wireless network for the first 30 seconds

Hello, thanks for your answer.
Perhaps it was not really obvious from what I posted in my first post but I am actually using the b43 module.  I also tried the other modules without any success.
And yes, I read the Broadcom wiki page.

I managed to reduce the connection time from 30 seconds to 15 seconds by using netcfg/netctl.
It is actually way better because I just have to wait a few seconds after seeing the desktop.

I will try to do the connection process manually to see what is so long.

Once again, thanks for your help.

WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: No wireless network for the first 30 seconds

I hope you can find something, as I can see no reason why NetworkManager would be considerably slower than netctl.  Typically dhclient is about as fast as dhcpcd.

Maybe you could try connman-git from the AUR.  It is controlled with connmanctl, for which there is no included man page, but looking therough the --help output I was able to figure it out just fine.  There ia also connman_dmenu-git in the AUR as well as connman-ui-git.