Difference between revisions of "Unix and Linux config"

Latest revision as of 21:50, 20 September 2021

Article on ways to start programs automatically as a Linux system boots into multi-use mode:

• https://www.dexterindustries.com/howto/run-a-program-on-your-raspberry-pi-at-startup/

^ systemd and systemctl note

Necessary to run the following after adding a .service file:

sudo systemctl daemon-reload

sudo systemctl enable my_new_service.service

sudo systemctl start my_new_service.service

^ Linux Kernel Archives

Important steps to verify Linux kernel archive downloads:

• https://www.kernel.org/category/signatures.html

^ Install And Booting Modes Legacy Versus UEFI

Notes here to address troubles encountered while installing Ubuntu 20.04 LTS from USB thumb driver to HP EliteBook laptops. At startpage.com entered search string "hp elitebook Ubuntu install "Bootdevice Not Found" Hard Disk - (3F0)" and first visited:

 *  https://ubuntuforums.org/showthread.php?t=2452483

Began install anew after setting "EUFI" boot mode in BIOS, so that we're now booting USB driver via this newer EUFI firmware.

^ Ubuntu Post Install Notes 2021 Q3

Different topic:

After installing Ubuntu 20.04 LTS on HP Elitebook, and performing `sudo apt update && sudo apt upgrade` there are 79 packages to update. End of updates get a series of warnings to the effect:

 W: Possible missing firmware /lib/firmware/i915/skl_guc_49.0.1.bin for module i915

There are roughly fifteen similar warnings. Missing binary files in same path include [skl_|bxt_|kbl_|glk_|ehl_] and there are one or two more binary files possible missing as well. i915 is a GPU or graphics chipset, so this firmware may be related to the graphics subsystem of this laptop.

After Ubuntu server install from flash driver, adding packages:

icewm
lightdm
openbox
xdm
xfce4
xfce4-battery-plugin
xserver-xorg