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  • PWN fan control in Linux, using Supermicro motherboards

    calendar November 30, 2021 nav_categories Tech nav_tags supermicro motherboard nav_tags supermicro nav_tags supermicro x11ssh-f nav_tags ipmitool nav_tags shell script nav_tags noctua fan nav_tags noctua nf-a8 nav_tags noctua nf-p12

    New fans, new problem

    My NAS uses a Supermicro X11SSH-F motherboard, which I love if for no other reason than it has IPMI.

    One of my 120mm case fans started to die, so since I was opening the case, and all of the fans were the same age (~8 years old), I decided to replace all of the fans.

    I bought some Noctua NF-P12 …

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  • Testing PWM fan speeds in Linux using spintest.sh

    calendar November 22, 2021 nav_categories Tech nav_tags fans nav_tags fan nav_tags pwm nav_tags perl

    I swapped out the fan in my NAS server with some Noctua, which all supported PWM.

    As part of my testing, to see what speeds the PWM fans would run at, I found a script that was written by the TrueNAS community.

    I had to modify it so it would run on Ubuntu, but there wasn't much to modify.

    This output of this script …

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  • Running VNC on Ubuntu 20.04 with default window manager

    calendar November 15, 2021 nav_categories Tech nav_tags ubuntu nav_tags ubuntu 20.04 nav_tags mate desktop nav_tags vnc nav_tags vnc server nav_tags tigervncserver nav_tags tiger vnc server nav_tags gnome 3 nav_tags gnome

    I wrote previously about my frustration with trying to get the default Ubuntu desktop to run in a VNC session, one that would install as a service, and work after a reboot.

    After spending more time than I'd like to admit, I threw in the towel, and went with the Mate desktop (Gnome 2 based), which worked without a …

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  • Connecting to Ubuntu 20.04 via VNC

    calendar November 2, 2021 nav_categories Tech nav_categories Software nav_tags ubuntu nav_tags ubuntu 20.04 nav_tags mate desktop nav_tags vnc nav_tags vnc server nav_tags tigervncserver nav_tags tiger vnc server nav_tags gnome 2

    So I needed a way to connect to a Linux VM via VNC.

    There is a lot of information out there on how to do it, but most of it talks about using less resource intensive desktop (xfce4).

    I wanted the full desktop experience, and as both my Linux box and my full-time desktop are both connected to a 1GB switch, I wasn't …

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  • Expanding the hard drive (non-LVM) of a Linux virtual machine

    calendar October 27, 2021 nav_categories Tech nav_tags linux nav_tags ubuntu nav_tags ubuntu desktop nav_tags resize2fs nav_tags fdisk nav_tags virsh nav_tags fdisk nav_tags qemu

    I created an Ubuntu desktop virtual machine (VM) on my KVM system, and shortly after I started using it, I realized that I hadn't allocated/created a large enough hard drive for my use.

    I have a "master" Ubuntu VM that I clone when I need an Ubuntu VM, which is set up and configured they way I like it.

    I had …

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  • Expanding the hard drive (LVM) of a Linux virtual machine

    calendar October 23, 2021 nav_categories Tech nav_categories Hardware nav_tags linux nav_tags kvm nav_tags virsh nav_tags qemu nav_tags lvextend nav_tags pvresize nav_tags growpart nav_tags lsblk

    I was doing some testing of using a Samba share for OSX's Time Machine backup, and needed to verify that it would actually work.

    My initial test simply made sure that the Samba share showed up as an option in the Time Machine preferences, but I needed to run a Time Machine backup.

    However, the Ubuntu VM I've been using …

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