plembo

VirGL for Linux KVM guests on Ubuntu Desktop

NOTE: Please don't ask for help here, it was a miracle that I got it to work at all. Seek answers in the usual places (yes, even Stackoverflow knows more than I do).

The question: How can I get 3d accelerated graphics for Linux guests in KVM without using PCI passthrough?

The short answer is: Use VirGL. The long answer is more complicated, because the VirGL project has had slow but steady progress towards actually working reliably, but the degree to which any given Linux distribution (or related driver project) is in sync has varied greatly over time. Even if it works right now, today, on your machine, it might not tomorrow. Note that even when it works, graphics performance is mediocre to downright painful.

Tested on Ubuntu Desktop 22.04.04 LTS with qemu-kvm, in an "Ubuntu on Xorg" session (not Wayland). Linux quests must have spice-vdagent installed (Ubuntu installs this by default). The hardware is a AMD 5600G d

troyfontaine

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

Silvenga

start on filesystem and started networking
stop on shutdown

author "Mark Lopez"
description "Ghost Upstart Job"
version "0.2"

respawn
respawn limit 5 30

abythell

#!/bin/bash
# Script to download, configure, and install Ubuntu as a Xen domU
# Uses existing LVM Volume Group.  Must be run as root/sudo.
# Based on instructions at https://help.ubuntu.com/community/Xen

# User Configurable Settings
NAME=ubuntu     # name of Domain to create
VG=/dev/domU    # existing volume group in which to create a logical volume
LV=$NAME        # name of the new logical volume to create
LV_SIZE=5G      # size of the new logical volume

abythell

#!/bin/bash
# Setup and configure Xen DomU
# Run as root/sudo on a fresh Ubuntu Server 12.04 LTS install.  Reboot when complete.

# Update
apt-get update
apt-get upgrade

# Install Xen hypervisor
apt-get install xen-hypervisor-amd64

alexeiz

diff -u -r a/CRT.c b/CRT.c
--- a/CRT.c     2012-10-19 14:59:28.000000000 -0400
+++ b/CRT.c     2013-01-28 12:08:36.812929000 -0500
@@ -562,7 +562,7 @@
       CRT_colors[LED_COLOR] = ColorPair(Green,Black);
       CRT_colors[TASKS_RUNNING] = A_BOLD | ColorPair(Green,Black);
       CRT_colors[PROCESS] = A_NORMAL;
-      CRT_colors[PROCESS_SHADOW] = A_BOLD | ColorPair(Black,Black);
+      CRT_colors[PROCESS_SHADOW] = A_BOLD | ColorPair(Green,Black);
       CRT_colors[PROCESS_TAG] = A_BOLD | ColorPair(Yellow,Black);