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: aptitude remove nvidia-installer-cleanup ./NVIDIA-Linux-x86_64-375.66.run After this upgrade nvidia and linux 4.11.1 works again Versions: before upgrade jessie …

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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 Logic / Symbios Logic MegaRAID SAS-3 …

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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 compile option. On Debian7 the libdb.so file moved to /usr/lib/x86_64-linux-gnu/ and configure.sh fails to …

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Debian 8 Uses only One Core of a Multi Core CPU

Problem: A fresh installed Debian 8 (Jessie) 32bit 686 uses only one core of a 6 core Xeon CPU. amd64 kernels don’t have this problem. Solution: The HP Proliant DL360 Gen9 has a BIOS option called “Processor x2APIC Support”. When you set this option to “Disabled” the Linux kernel uses all 6 cores. x2APIC is a …

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