Bachelor Thesis: Like-Charge Attraction in DNA
My Bachelor thesis was published a few days ago. It is available at the Institute of Computational Physics at the University of Stuttgart as well as here. Download
View ArticleSSDs with TCG Opal or IEEE-1667 support
Recently, a few SSD models have been introduced that support Full-Disk Encryption per the TCG Opal standard. Many older SSDs already support AES encryption and use the ATA password for this, which is...
View ArticleCUPS on OS X hangs after a few days, reports “Internal Server Error”
If you set up CUPS on an OS X Server (version 10.8.5 in my case, but anything from 10.7 (where CUPS introduced sandboxing) through 10.9 (the current version) should exhibit this behavior), i.e. you...
View ArticleLeserbrief “Rentenpaket”
Am 29. Januar 2014 beschloss die Bundesregierung die als “Rentenpaket” bekannte Rentenerhöhung. Unmittelbar darauf präsentierte Arbeitsministerin Andrea Nahles eine Werbekampagne dafür; über die am 30....
View ArticleVMware ESXi 5.5.0 panics when using Intel AMT VNC
For compatibility with a new guest OS, I upgraded my ESXi to 5.5 today. During reboot, it crashes after a few seconds (it briefly flashes a message about starting up PCI passthrough on the yellow ESXi...
View ArticleCalling the parent constructor in PHP 5
Say you write a PHP class that needs to call the parent constructor. At first sight, this is simple: function __construct() { parent::__construct(); } Say you want to pass some arguments to the parent...
View ArticleWordPress Plugins
After I recently set up a blog for a friend, I thought I’d post a list of plugins I use on the various WordPress instances I run for various people and myself. Simple Custom CSS. Allows you to add...
View ArticleCUPS-to-CUPS printing with server-side processing and page_log
Printer sharing on Windows is easy: the client receives the driver from the server, presents the driver GUI and passes on an intermediate format along with the options selected in the driver to the...
View ArticleSipura SPA-3000 spontaneous reboots, reason 0x737208f4
I have a 10-year-old Sipura SPA-3000 VoIP phone adapter (SIP to FXS phone) which at some point started rebooting once an hour, even during calls. After enabling remote syslog, I saw that these reboots...
View ArticleWifi with WPA/WPA2 mixed mode encryption on Snom phones
When you try to connect a Snom phone to a Wifi network, make sure the network isn’t running in mixed WPA/WPA2 mode. The phone will see the network anyway, but fail to connect at boot. Disabling WPA in...
View ArticleAsterisk: Change number in To header
A long time ago, I wrote about changing the callee ID as seen by the caller using CONNECTEDLINE. Changing the caller ID as seen by the callee is also pretty obvious using CALLERID. That leaves two more...
View ArticleAsterisk 11 und Sipgate Basic
Für ältere Asterisk-Versionen hat Sipgate in seinen FAQs passende Einträge für die sip.conf aufgeführt. Unter Asterisk 11 hat sich leider die NAT-Behandlung etwas verändert (nat=yes gibt es nicht...
View ArticleCrossflashing Dell PERC H200 to LSI 9211-8i
OEM version of the LSI SAS 9211-8i, such as the Dell H200, H310 or IBM M1015 are quite popular for use with FreeNAS. However, they need to be flashed with a regular LSI firmware to disable their RAID...
View ArticlePHP 5: ldap_search never returns when searching Active Directory
I recently moved a PHP web application from a server running PHP 5.3 on Mac OS X 10.6 to a newer one with PHP 5.4 on Mac OS X 10.9. This caused the following code sample, run against an Active...
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