https://wiki.bu.ost.ch/infoportal/ 2026-05-01T02:32:53+00:00 https://wiki.bu.ost.ch/infoportal/ https://wiki.bu.ost.ch/infoportal/lib/tpl/ntb2/images/favicon.ico text/html 2019-02-24T15:44:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/cpu_affinity?rev=1551019454&do=diff CPU affinity Introduction Normally the Linux scheduler chooses on which CPU core a process should be executed. However, the various processes of Linux can also be pinned to one CPU core and all realtime processes to another core. This can reduce the jitter of real-time processes. text/html 2019-02-13T15:03:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/install_old_kernel?rev=1550066603&do=diff Install old Linux kernel 3.18.1 cd /tmp/ wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.1-vivid/linux-headers-3.18.1-031801-generic_3.18.1-031801.201412170637_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.1-vivid/linux-headers-3.18.1-031801_3.18.1-031801.201412170637_all.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.1-vivid/linux-image-3.18.1-031801-generic_3.18.1-031801.201412170637_amd64.deb sudo dpkg -i linux-headers-3.18.1-*.deb linux-imag… text/html 2019-02-24T15:48:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/kernel_parameter?rev=1551019721&do=diff Kernel Parameter Overview Kernel parameters can be used to change some kernel settings at boot time. You can change the parameter temporary (only for a single boot) or permanently. Temporary Change These changes are valid only once. If you restart your system, they no longer hold. text/html 2019-02-13T10:53:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/mirror_displays?rev=1550051619&do=diff Mirror displays Check aktive displays Check the name of the active displays. xrandr Sampleoutput: * eDP-1 connected primary ... -> primary monitor * HDMI-1 connected ... -> secondary monitor More Infos Mirror displays xrandr --output HDMI-1 --same-as eDPA-1 text/html 2023-05-10T15:32:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/network?rev=1683725567&do=diff General Network Settings For networking, our yocto images are currently (status: March 2023) using systemd-networkd which can be quite cumbersome for users without experience. The following tutorials are covering the most important basic network settings. DHCP / Static IP addresses text/html 2019-02-13T15:13:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/remote_desktop?rev=1550067198&do=diff Remote desktop Instruction text/html 2019-02-24T15:41:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/run_lvl_1?rev=1551019269&do=diff RunLevel 1 Overview Debian Doku for RunLevel Linux starts different services as different run levels. Depending on the run level various services become available: * RunLevel 1: Single-user mode. Most basic mode. Only text console available. * RunLevel 2: Multi-user mode. You can use different users. text/html 2023-05-10T15:27:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.bu.ost.ch/infoportal/software/linux/linux_os/start?rev=1683725269&do=diff Linux OS * Read-only Filesystem * Boot Ubuntu in Text Mode * RunLevel 1 * CPU Affinity (Pin process to certain CPU) * Kernel Parameter * Mirror Displays * Install Old Linux Kernel * Remote Desktop (Ubuntu 18.04) * General Network Settings