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Dietrich Schroff

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Dr. Dietrich Schroff
Updated: 1 week 6 days ago

Android Update: 4.4.3

Thu, 2014-06-19 11:36
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)

Tue, 2014-06-10 23:02
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 checking the box again CLIP, it worked like before...

Mounting VMWare-Volumes/Disks with Debian

Tue, 2014-05-20 14:30
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 package, i got the following error:

root@debian:/tmp# vmfs-fuse image /mnt/vm
VMFS VolInfo: invalid magic number 0x00000000
VMFS: Unable to read volume information
Trying to find partitions But: Do not worry about this error message. The image was mounted on /mnt/vm and accessible without any problem...

Ubuntu upgrade to 12.04: grub timeout does not work anymore

Sun, 2014-03-30 13:11
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=10and update-grub, grub worked like
 GRUB_TIMEOUT=-1If 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 [ "${recordfail}" = 1 ] ; then
  set timeout=-1
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=10
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=-1
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=10
fiThis works, but i have to redo the change everytime update-grub is used...

Ubuntu upgrade to 12.04: screen only works with 1024x768

Sun, 2014-03-30 12:57
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 i915.modeset=0  because with the older ubuntu version hibernate does not work and this configuration fixed it. [link])