[systemd-devel] Fail to load network modules properly

[Łukasz Słaboń]

Hello everyone,

Since starting using linux last year (xubuntu 18.04) I am experiencing
occasional problems with wifi interface (broadcom BCM43224 rev 01
14e4:4353). From time to time (every 3 - 4 starts) my wifi card is not
recognized and I do not see wifi interface after boot. After comparing
dmesg listings from successful and failed boots I have discovered one
difference. My main partition is mounted twice and in successful boot it is
done before  before cfg80211 module. In failed boot second mount is done
after cfg80211 module. Can this be a cause of network interface problems?
If yes is there any possibility to solve this within systemd? Just to
clarify such situations happen with proprietary and open-source drivers as
well.

Here is the fragment of dmesg listing after successful boot:
[    4.452703] [drm] Initialized radeon 2.50.0 20080528 for 0000:02:00.0 on
minor 0
[    4.601495] EXT4-fs (sda5): mounted filesystem with ordered data mode.
Opts: (null)
[    4.669690] clocksource: Switched to clocksource tsc
[    5.068753] input: SynPS/2 Synaptics TouchPad as
/devices/platform/i8042/serio1/input/input5
[    5.774502] random: crng init done
[    5.774503] random: 7 urandom warning(s) missed due to ratelimiting
[    6.151902] ip_tables: (C) 2000-2006 Netfilter Core Team
[    9.336683] lp: driver loaded but no devices found
[    9.366325] ppdev: user-space parallel port driver
[    9.405084] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro
[   12.325130] Adding 2097148k swap on /swapfile.  Priority:-2 extents:6
across:2260988k FS
[   20.381638] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
[   20.385106] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   20.863926] wl: loading out-of-tree module taints kernel.
[   20.863932] wl: module license 'MIXED/Proprietary' taints kernel.
[   20.863932] Disabling lock debugging due to kernel taint
[   20.866504] wl: module verification failed: signature and/or required
key missing - tainting kernel
[   20.941673] wlan0: Broadcom BCM4353 802.11 Hybrid Wireless Controller
6.30.223.271 (r587334)

Here is the fragment of dmesg listing after failed boot:
[    5.194759] EXT4-fs (sda5): mounted filesystem with ordered data mode.
Opts: (null)
[    6.249451] random: crng init done
[    6.249454] random: 7 urandom warning(s) missed due to ratelimiting
[    6.728424] ip_tables: (C) 2000-2006 Netfilter Core Team
[    9.888353] lp: driver loaded but no devices found
[    9.913126] ppdev: user-space parallel port driver
[   10.152833] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
[   10.156199] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   10.174030] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro
[   21.275568] Adding 2097148k swap on /swapfile.  Priority:-2 extents:6
across:2260988k FS
[   21.472260] wl: loading out-of-tree module taints kernel.
[   21.472264] wl: module license 'MIXED/Proprietary' taints kernel.
[   21.472265] Disabling lock debugging due to kernel taint
[   21.474938] wl: module verification failed: signature and/or required
key missing - tainting kernel
[   21.477657] wl 0000:08:00.0: enabling device (0000 -> 0002)
[   21.477881] wl driver 6.30.223.271 (r587334) failed with code 1
[   21.477882] ERROR @wl_cfg80211_detach :
[   21.477883] NULL ndev->ieee80211ptr, unable to deref wl

If systemd is not the case than I'm sorry for bothering you.

In case you have any solution for this please email me at
lukasz.slabon at gmail.com

Regards,
Łukasz Słaboń
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