Posts tagged "linux"
Multi Seat Linux Workstation
Current computers are fast enough to handle more than one user at a time. So I started the project to setup my workstation to support two seats, one for me and one for my gf. Tasks: Two concurrent Xorg sessions both with one keyboard, one mouse, and two monitors Separate audio for both seats Auto mounting of USB sto...
CPU Bug on Intel Skylake and Kabylake
I had two or three system crashes on my Linux workstation after upgrading to a new mother board and CPU within some months. This is very unusual for me because stability is the main objective when I build a new a workstation. So I tried to find the reason. Some weeks ago I found this bug report: https://lists.debian...
NVidia Driver on Linux-4.11.1
Problem: after installing linux kernel 4.11.1, the dkms package of the nvidia driver does not compile. You find some cryptic error message about ./Kbuild in /var/lib/dkms/nvidia-current/375.39/build/make.log Solution: I uninstalled the debian nvidia package and installed the newer driver from the NVidia homepage: ap...
Firefox Audio is Broken due to PulseAudio Dependency
Problem: Firefox 52 audio does not work without pulseaudio. Discussion: pulseaudio is a bloated audio daemon that often fails. In the last years, when ever audio failed on linux, the quickest solution was to uninstall pulseaudio. But the Firefox developers made the mistake to remove support for the underlying audio ...
Check Raid Status for Dell Raids on Linux
Linux support from dell is still very poor. They still support only RedHat$ and SuSE$. But there are ways to check the Raid status of Dell server on debian. http://hwraid.le-vert.net/ is doing a good job in collecting information and building Debian style packages. Example: A Dell server "PowerEdge T130" with "LSI L...
Cups PDF Filter Crashes
Problem: for some PDF files cups does not print the page, the web gui just tells "filter failed" and in the cups logfile you find [Job 528] PID 19521 (gs) crashed on signal 11! Discussion: cups on debian uses ghostscript as pdf renderer. The pdf renderer of ghostsciprt crashes on many files. You can test by simply r...
Autosave for VIM
I believe that it's a good idea that vi does not auto save during editing. Think of config files or src files that should never be in an inconsistent state. The programmer or sysadmin should decide when he wants to save data. But sometime auto save is handy, while typing lists like todo lists or outlines etc. Every ...
Rare Connection Resets after Linux Upgrade
Problem: after upgrading from Debian 6 to Debian 8 some of the machines lose their ethernet network connection under heavy load for some seconds rarely. You find lines like these in syslog: [2333099.217735] NETDEV WATCHDOG: eth1 (tg3): transmit queue 0 timed out [2333099.217966] tg3 0000:03:04.1 eth1: transmit timed...
Compiling Sendmail on Debian7
Problem: after compiling sendmail on Debian7 with "./Build" sendmail does not recognize hash .db files. You see the following error message: readcf: map access: class hash not available Discussion: ./Build should detect the berkley DB automatically. When devtools/bin/configure.sh finds libdb.so it adds -DNEWDB as co...
Generate CSR using openssl
Browsers started to warn users about certificates with Sha1 signature. Sha256 is needed now a days. So it's time to renew certificates from Thawte, Godaddy, etc You can generate a new Certificate Signing Request with openssl with this command: openssl req -nodes -newkey rsa:2048 -keyout servername.key -out servernam...