Category Archives: Linux

Stuff about the superior OS

My tweaks to get Kali Linux running well on the GPD Pocket

Mostly notes to myself, but hey, maybe it helps you too! Get Kali for the GPD Pocket I installed using re4son’s modified image from here. Removing the GRUB splash screen (it’s sideways anyway, which looks horrible, and I’m not multibooting) /etc/default/grub GRUB_TIMEOUT=0 GRUB_BACKGROUND=”” Speeding up WiFi so it doesn’t lag if you SSH into the […]

Using IPv6 SLAAC with IP forwarding on Debian Stretch (“connect: network is unreachable”, no default gateway)

When configured as a router, for instance for hosting virtual machines with KVM, a Debian machine with a somewhat recent kernel will not listen to router advertisements from others. This makes sense in many cases, but when you have a VM host in your internal network, which only router function is to allow communication to […]

Exim4 line length in Debian Stretch – “Mail delivery failed: returning message to sender”

Exim4 introducted new behaviour in the versions included in Debian Stretch. Suddenly, the RFC max line length of 998 characters is enforced, and emails with lines exceeding this length are returned to sender. For the interested, part of the discussion about this feature is over here: Anyway, the solution to this issue in Debian […]

Understanding mcelog ECC errors – Which stick of RAM is broken?

Before reading this, please note that much of the information in mcelog is hardware dependent. Your mileage may vary. Memory gone bad So one of the servers, running an X99-WS/IPMI board from Asus, began putting errors into /var/log/mcelog. Thankfully, they were all the same, telling me the following: mcelog: failed to prefill DIMM database from […]