Ubuntu: WLAN module for bcm43-chipset gone after reboot...

Today i ran with a laptop into the following problem:
After a reboot the system lost its WLAN:

 # uname -a Linux Notebook 3.13.0-86-generic #131-Ubuntu SMP Thu May 12 23:33:13 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

and

# lspci | grep 802.11
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)

Trying a modprobe wl failed...
There were some posts, which suggested to install kernel-drivers, dkms and so on, but this was not the problem, but it led me to the solution:
I tried to install this packages an i got the following:

root@Notebook:~# apt-get install linux-headers-$(uname -a) build-essentials dmks E: Der dpkg-Prozess wurde unterbrochen; Sie müssen manuell »sudo dpkg --configure -a« ausführen, um das Problem zu beheben.

And here we go:

root@Notebook:~# dpkg --configure -a
mysql-client-core-5.5 (5.5.53-0ubuntu0.14.04.1) wird eingerichtet ...
libgpgme++2 (4:4.13.3-0ubuntu0.3) wird eingerichtet ...
sudo (1.8.9p5-1ubuntu1.3) wird eingerichtet ...
Konfigurationsdatei »/etc/sudoers«
 ==> Geändert (von Ihnen oder von einem Skript) seit der Installation.
 ==> Paketverteiler hat eine aktualisierte Version herausgegeben.
   Wie möchten Sie vorgehen? Ihre Wahlmöglichkeiten sind:
    Y oder I : Die Version des Paket-Betreuers installieren
    N oder O : Die momentan installierte Version beibehalten
       D     : Die Unterschiede zwischen den Versionen anzeigen
       Z     : Eine Shell starten, um die Situation zu begutachten
 Der Standardweg ist das Beibehalten der momentanen Version.
*** sudoers (Y/I/N/O/D/Z) [Vorgabe=N] ?
xscreensaver-data (5.15-3+deb7u1ubuntu0.1) wird eingerichtet ...
...
...
initramfs-tools (0. 103ubuntu4.4) wird eingerichtet ...
update-initramfs: deferring update (trigger activated)
bcmwl-kernel-source (6.30.223.248+bdcom-0ubuntu0.2) wird eingerichtet ...
Loading new bcmwl-6.30.223.248+bdcom DKMS files...
Building only for 3.13.0-86-generic
Building for architecture x86_64
Building initial module for 3.13.0-86-generic
Done.
wl:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/3.13.0-86-generic/updates/dkms/
depmod........
DKMS: install completed.
update-initramfs: deferring update (trigger activated)
unity (7.2.6+14.04.20160408-0ubuntu1) wird eingerichtet ...
...
...

Now the WLAN was up again...

Apparently the last system update was waiting for an enter, but i forgot this windows and did the reboot...

Debian dist-upgrade: from 7(wheezy) to 8(jessie): udev...

I was running my own kernel on my laptop. But doing the upgrade from debian 7 to 8, i ran in the following problem:

Since release 198, udev requires support for the following features in
the running kernel:

- inotify(2)            (CONFIG_INOTIFY_USER)
- signalfd(2)           (CONFIG_SIGNALFD)
- accept4(2)
- open_by_handle_at(2)  (CONFIG_FHANDLE)
- timerfd_create(2)     (CONFIG_TIMERFD)
- epoll_create(2)       (CONFIG_EPOLL)
Since release 176, udev requires support for the following features in
the running kernel:

- devtmpfs         (CONFIG_DEVTMPFS)

Please upgrade your kernel before or while upgrading udev.

AT YOUR OWN RISK, you can force the installation of this version of udev
WHICH DOES NOT WORK WITH YOUR RUNNING KERNEL AND WILL BREAK YOUR SYSTEM
AT THE NEXT REBOOT by creating the /etc/udev/kernel-upgrade file.
There is always a safer way to upgrade, do not try this unless you
understand what you are doing!


dpkg: Fehler beim Bearbeiten des Archivs /var/cache/apt/archives/udev_215-17+deb8u5_i386.deb (--unpack):
 Unterprozess neues pre-installation-Skript gab den Fehlerwert 1 zurück

So i changed to the default kernel of debian, but with this one systems was not able to mount the partitions, because the old kernel mounted the disk on /dev/hda and the new one on /dev/sda.
So i had to rewrite the /etc/fstab and after that, the dist-upgrade could continue...

Debian dist-upgrade: Laptop suspends 30s after boot / startup

After i moved to jessie (Debian 8) my laptop moved to suspend to RAM about half a minute after startup.
There was no message in the logfiles and even worse the resume does not work at all...
The configuration for the suspend was in here:

/etc/systemd/logind.conf:
 [Login]
#NAutoVTs=6
#ReserveVT=6
#KillUserProcesses=no
#KillOnlyUsers=
#KillExcludeUsers=root
#InhibitDelayMaxSec=5
#HandlePowerKey=poweroff
HandleSuspendKey=ignore
#HandleHibernateKey=hibernate
HandleLidSwitch=ignore
#PowerKeyIgnoreInhibited=no
#SuspendKeyIgnoreInhibited=no
#HibernateKeyIgnoreInhibited=no
#LidSwitchIgnoreInhibited=yes
#IdleAction=ignore
#IdleActionSec=30min
#RuntimeDirectorySize=10%
#RemoveIPC=yes

After changing the lines "HandleLidSwitch" and "HandleSuspendKey" to ignore and one more restart the laptops stays alive and no unwanted suspend is happening anymore.
That was a strange behaviour, because my first guess was overheating. But after waiting 10 minutes the laptop was really cool, so overheating was not the point...

Debian dist-upgrade: ipw2200 firmwares missing...

After the dist-upgrade the ipw2200 wireless chipset drivers are missing.
Grrrr...
No more internet access - so i had to use a good old LAN cable ;-)

The fix was very easy:

apt-get install firmware-ipw22x00
rmmod ipw2200
modprobe ipw2200

 and the wireless network is up again...

Debian dist-upgrade 5 (lenny) to 6 (squeeze): insserv: exiting now

After several years i decided to upgrade my old laptop to the current debian version.
The first

apt-get dist-upgrade

ran into the following problem:

insserv: warning: script 'K01hotplug-net' missing LSB tags and overrides
insserv: warning: script 'K01x2goserver' missing LSB tags and overrides
insserv: warning: script 'K01oracle-xe' missing LSB tags and overrides
insserv: warning: script 'S85vpnagentd_init' missing LSB tags and overrides
insserv: warning: script 'S02vpnclient_init' missing LSB tags and overrides
insserv: warning: script 'S15initrd-tools.sh' missing LSB tags and overrides
insserv: warning: script 'S15hotplug' missing LSB tags and overrides
insserv: warning: script 'S15modutils' missing LSB tags and overrides
insserv: warning: script 'modutils' missing LSB tags and overrides
insserv: warning: script 'hotplug' missing LSB tags and overrides
insserv: warning: script 'initrd-tools.sh' missing LSB tags and overrides
insserv: warning: script 'hotplug-net' missing LSB tags and overrides
insserv: warning: script 'vpnclient_init' missing LSB tags and overrides
insserv: warning: script 'x2goserver' missing LSB tags and overrides
insserv: warning: script 'oracle-xe' missing LSB tags and overrides
insserv: warning: script 'vpnagentd_init' missing LSB tags and overrides
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!
insserv: There is a loop between service vpnagentd_init and rc.local if started
insserv:  loop involving service rc.local at depth 23
insserv:  loop involving service vpnagentd_init at depth 1
insserv: exiting now without changing boot order!
update-rc.d: error: insserv rejected the script header
dpkg: Fehler beim Bearbeiten von /var/cache/apt/archives/util-linux_2.20.1-5.3_i386.deb (--unpack):
 Unterprozess neues pre-installation-Skript gab den Fehlerwert 1 zurück
Fehler traten auf beim Bearbeiten von:
 /var/cache/apt/archives/util-linux_2.20.1-5.3_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Hmmm. A further try with

apt-get dist-upgrade -f

 failed with the same error. What was wrong?

insserv: Starting vpnagentd_init depends on rc.local and therefore on system facility `$all' which can not be true!

 I just searched for "vpnagentd_init" in /etc und found it in /etc/init.d. Quick workaround: I moved the vpnagentd_init in a backup directory and after that the upgrade worked without any problem...

Journalismus, den die Welt braucht. Teil 3 | Pearls of journalism. Part 3

Yippie! I got a new release of IT-BUSINESS:

 And inside there was really nice article:

aha. I did not get this, but there is a magic weapon called chain management. Let's see what Google Translate does with this text:

Channel conflict threatens

The comparison of the "delivery price of Distribution" (blue line) with the average "sales price of Channels" (green line) makes it clear that price reductions on the part of distribution only be partially passed through the channel to the end customer. This focuses thus partially more on profit than on volume growth. A coordinated supply chain management is the solution to avoid such a channel conflict and specifically to develop benefits for participants

I think the english text is much more understandable than the german version...

Journalismus, den die Welt braucht. Teil 2 | Pearls of journalism. Part 2

Two weeks ago i started a first experiment with translating strange articles by Google (see here).
This was the next snippet (from IT-BUSINESS), which was a little bit weird:

Aha. Fog Computing...

Let's see, what Google Translate means to this:

Fog Compuing

The Fog is all symbolize the cloud around. It is all about the primary processing of data close to the data encoder, such as in the car or in the refrigerator before it is to be forwarded to cloud services. The more devices are connected to the cloud, the more data must be downloaded from and to the cloud. Fog Computing to store data that are needed for a specific device right there too and process.

"Downloaded from and to the cloud"...
For this snippet it wasn't really helpful to translate it into to english. But Fog Computing is a nice neologism ;-)

Journalismus, den die Welt braucht. Teil 1 | Pearls of journalism. Part 1

Today i browsed the magazine IT-BUSINESS  and read some really annoying articles. It was just words without building meaningful setences. It was so stunned, that i decided: I have to do something...

The  following idea came into my mind:
What about translating the part of the article, which i did not understand via Google Translate? Perhaps in english it sounds more meaningful (and more than 20% of the words are just technical terms in english...)

And after Google Translate:

Matching promotional concepts

In replacement markets optimization of promotional activities is one of the easiest ways to improve the profit. A price reduction associated with the direct delivery into the channel leading to a significant decline in sales in the distribution. A channel conflict could follow: The inventory turnover in the distribution decreases the Profitabliltät in the width of the channels decreases. It is a further price action required to stimulate demand again. It is more settled, for all concerned but worsens the profit situation.

Wow. It is really easier to understand this...