Linux

Grub settings and options

Submitted by Greg Nowak on 2020-10-27

Default kernel parameters: "quiet splash".

In my opinion you will get more sucessful boots and reduced graphical errors on boot if you remove quit and splash. Specifically the splash screen can make strange things happen and when removing "quiet" you are able to debug if there is an error.

 

I also tried to fiddel with "/etc/grub.d/48_linux_zfs" where I tried to out comment #vt_handoff="1" and set quiet boot to zero: 

 

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Keyboard Mapping Kubuntu 20.04

Submitted by Greg Nowak on 2020-05-26

Very interesting: https://medium.com/@saplos123456/persistent-keyboard-mapping-on-ubuntu-using-xmodmap-cd01ad828fcd

And useful when you want danish keyboard layout with a thai keyboard for instance. I really needed to map backslash "\" to a key on the keyboard because the key does not exist on a thai keyboard when danish keyboard layout is used.

My .Xmodmap file: keycode 49 = backslash

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Suspend Issue AMD Graphics Driver Kubuntu 20.04

Submitted by Greg Nowak on 2020-05-24

If you have the black screen of death when trying to get back from suspend mode, you might want to check out this bug description and possible resolutions: https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1849084

Otherwise disable compositor: qdbus org.kde.KWin /Compositor suspend

Check if compositor is enabled: qdbus org.kde.KWin /Compositor org.kde.kwin.Compositing.active
Or: qdbus org.kde.KWin /KWin supportInformation

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Android Flutter Notes

Submitted by Greg Nowak on 2020-05-09

Currently running flutter in ubuntu 20.04.

Flutter cli doc: https://flutter.dev/docs/reference/flutter-cli

Flutter pub doc: https://dart.dev/tools/pub/cmd

KVM installation: sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virtinst virt-manager
Old info: sudo apt install qemu qemu-kvm virt-manager (Remember to enable VT Virtualization in the Bios) - run: sudo kvm-ok (to check)