I have had the Arch Linux
linux-hardened kernel installed on
my Qotom fanless server
since I bought it a couple of years ago.
The Qotom has had kernel panics on the last two
linux-hardened updates.
I changed to the plain linux kernel.
It was pretty easy, even though I had a case of the nerves about it.
As is my habit, I ran pacman -Syu on my
Qotom fanless server
to get all the fresh Arch Linux software updates.
The update included a kernel, moving from “linux-hardened-7.1.3.hardened1-4”
to “linux-hardened-7.1.5.hardened1-1”.
Kernel upgrades are almost always no big deal.
Today, I got a kernel panic!
I used to live in a neighborhood with elderly power and phone infrastructure. The 120V, 60 Hz main power fluctuated during spring and summer. I bought an APC Back UPS 1500 uninterruptible power supply in early June, 2020 to get whatever server I was using back then through the inevitable series of short power losses.
While fiddling with my educational TFTP client code
I noticed an oddity.
Sometimes my client could talk to a TFTP server,
but not vice versa.
The TFTP server, when it condescended to acknowledge a connection,
logged a message like recvmsg(): connection refused.
I used a local TFTP server, running on my laptop,
to avoid these errors,
but the mystery of why the server returned
no TFTP ACKs or DATA packets remained.
My laptop’s /etc/hosts file has entries like this:
fe80::46a8:42ff:fe2d:c255 monarcheno1
# eno2 - 10.0.10.1
fe80::46a8:42ff:fe2d:c256 monarcheno2
# eno4 10.0.20.1
fe80::46a8:42ff:fe2d:c258 monarcheno4
# ens5 10.0.40.1
fe80::6a05:caff:fe4a:8ac7 monarchens5
A Dell PowerEdge 530 serves as my house network’s
router, firewall, DNS and NTP server.
Today, pacman -Syu updated the Kea DHCP daemon
from Arch version 3.0.3-1 to 3.0.3-6.
The updated daemon wasn’t serving DHCP.
I bought a refurbished Dell 7420e laptop
to replace my aging Dell 7470.
The 7470 has an S key that works irregularly.
In the past, I have used xsane to run an HP DeskJet 2600 All-in-One Printer flatbed scanner.
I bought a refurbished Dell 7420e laptop
to replace my aging Dell 7470.
The 7470 has an S key that works irregularly.
Dell laptops have a “backlight”, and the letters on the black-body of the keys can glow under the right circumstances. Very handy when positioning your fingers on the keyboard when in dim rooms. After installing Arch Linux, the 7420e keyboard would not illuminate. The keyboard backlight worked, the POST flashed it during reboots.
I bought a refurbished Dell 7420e laptop
to replace my aging Dell 7470.
The 7470 has an S key that works irregularly.
After installing Arch Linux, the 7420e would not suspend when I closed the lid, it just stayed on, display lit up brightly.