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 (more...)

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 (more...)

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 (more...)

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 (more...)

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 (more...)

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 (more...)

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 (more...)

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... (more...)

Android Update: 5.0

Today my Nexus 7 got the upgrade to Android 5.0:
 After this upgrade, many things changed, like the system settings:



But everything is slower than before.... ;-(

For a complete history of all updates visit this posting.


Virtualbox: only 32bit guests possible even though virtualization enabled in BIOS / Intel Process Identification Utility shows opposite to BIOS virtualization setting

Virtualbox on my Windows 8.1 stopped running 64bit guests a while ago. I did not track down this problem. Now some months later i tried again and found some confusing things.

First setting:
BIOS virtualization enabled
Intel Processor Identification Utlility in 8.1: virtualization disabled

Second setting
BIOS virtualization disabled
Intel Processor Identification Utlility in 8.1: virtualization enabled
With both settings: Virtualbox runs 32bit guests but no 64bit guests.
 

After some searching, (more...)

Wireshark hanging on Windows 8.1 at startup

After upgrading Windows 8 to Windows 8.1 my wireshark freezed on every startup without showing up the main window.
The only workaround was to deinstall wireshark including wincap and installing it again. But after the nex reboot, it freezed again.

After searching around i found the following fix, with cured this problem:

inside the registry you have to change the DWORD start in
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesnpf
from 0 or 1 to 2. After that wireshark will start properly even after reboots....


Android Update: 4.4.3

After nearly everyone upgraded to 4.4.3 my device came up with the icon for upgrading android to its next version:

For a complete history of all updates visit this posting.

FritzBox 7270: CLIP stops working after upgrading to FritzOS 6.05 (problem solved)

After upgrading to FritzOS 6.05 CLIP stopped working with my analog phone.
The settings looked quite ok: (Telefonie -> Telefoniegeräte -> bearbeiten -> Merkmale des Telefoniegeräts)

This basic feature was certainly not shipped without testing. So this has to be a problem of data/parameter migration.
After unchecking CLIP, doing a reboot and ba checking the box again CLIP worked like before...

Mounting VMWare-Volumes/Disks with Debian

Some time ago a vmware server did not recognize any more a data disk. This disk was formatted with vmfs v3 (enter the vmware server via ssh and type mount..). First thing i did, was creating an image of this disk, to play around without any danger of data loss.

There is a good article how to mount vmfs, but on debian i had to install the package otherosfs.

After i installed this (more...)

Ubuntu upgrade to 12.04: grub timeout does not work anymore

After doing the upgrade and solving some issues with my screen-resolution, another grub problem hit me:
The timeout for booting the standard kernel did not work anymore.
Inside /etc/default/grub
GRUB_TIMEOUT=10
and update-grub, grub worked like
 GRUB_TIMEOUT=-1
If you need a  good manual  just look here, but this does not help me, too.

After some tries, i did the following:

In /boot/grub/grub.cfg i changed from
terminal_output gfxterm
if [ "${recordfail}" = 1 ] (more...)

Ubuntu upgrade to 12.04: screen only works with 1024×768

After upgrading a laptop-system to 12.04 (precise pangolin) X only starts with a resolution of 1024x768 and not with 1366x768.
I followed many postings and tried many things:
  • add new resolution with xrandr (here)
  • create a xorg.conf file (here)
  • add new drivers (here)
  • ...
But there was only one thing wrong: /etc/default/grub

After changing the following line everything worked:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.modeset=0
to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
(i added (more...)

Telegram on two devices…

After trying Whatsapp on 2 devices without success, i tried the same thing with telegram. Telegram says about multiple devices:


So let's see...
Registering the mobile phone was straight forward: a SMS with a verification code and that's it.
Registering was easy: just another SMS
And after entering the code on the tablet i got the following message on my mobile phone:
After that every conversation or more precise: every unsecure conversation is broadcasted to (more...)

Smart Meter@Home: Fritz!Powerline 546E – really smart?

Everyone is talking about Smart Meter - is it possible to get in touch with this topic by buying a Fritz!Powerline 546E?

The key points of Smart Meters according to wikipedia are:
  • real-time or near real-time sensors
  • power outage notification
  • power quality monitoring 
  • collect, and analyze energy usage
What is supported by the 546E?
  • power outage notification: no way without a battery ;-)
  • real-time or near real-time sensors: one measurement per minute
  • power quality (more...)

Whatsapp on 2 devices: "does not work, tell why!"

After nearly everyone of my friends is using whatsapp, it was overdue to download this app.
Why is this app used by everyone? What's cool about this app?
  • You have to do nothing after the download except this sms-verification
  • No account creation
  • No new password (or reuse another one < - li="" nooo="">
  • No need for searching addresses
  • You do not have to take care about your contact list
  • Just start messaging
Why does this work? Whatsapp uses (more...)