Das Werkstatt

Inserted an SD card into a notebook (Xubuntu 20.04.3) and nothing happened: Nothing showed up for mounting. "dmesg" shows the following error message: [41117.523403] blk_update_request: I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [41117.523405] Buffer I...

It puzzled me why it appeared on so many different PCs that I've set up from scratch, and noone had noticed on the Internet except for me. That's odd. And unlikely. So I guess the reason is that I always disable all automatic updates as one of the first things when I setup a new machine. I seriously...

I found this piece of code in my notes. I don't know if it ever worked though, and it may be a copy/paste from a forum or website: @echo off echo. setlocal set N=0 set FILENAME=baseFileName.%N%.tif :loop set /a N+=1 set FILENAME=baseFileName.%N%.tif if exist %FILENAME% goto :loop echo You can safely...

[PROBLEM] I'm using an HP 1102w b/w laser printer for almost 10 years now. It's a great printer! Unfortunately, it suffers from an annoying bug/issue with CUPS: Most of the time, the printer needs to be reset after each print, otherwise it will not spit out any following print jobs. Turning the pri...

Interesting: Aug 1 07:06:51 dns_server2 named[2159]: error (unexpected RCODE REFUSED) resolving 'TrAcKeR.publicBt.com/A/IN': 216.239.32.10#53 Aug 1 07:06:51 dns_server2 named[2159]: error (address not available) resolving 'TrAcKeR.publicBt.com/A/IN': 2001:4860:4802:34::a#53 Aug 1 07:06:51 dns_server...

Shellscript sketchpad for documenting the configuration of a ZFS storage constellation: #!/bin/bash TIMESTAMP="$(date +%Y%m%d-%H%M )" INFOFILE="zfs-avrd_microcosm-$TIMESTAMP.info" function run_cmd { CMD="$1" echo "$CMD" eval "$CMD" | tee -a $INFOFILE...

[PROBLEM] Setup was (on Xubuntu 18.04): * VM client 1 (Debian9) * VM client 2 (Debian10) Transferring files using rsync-over-ssh was slowly crawling around 300-600 KB/s. :? [SOLUTION] The Debian9 VM client had an "Intel PRO/1000" adapter assigned, whereas the Debian10 VM was using "v...

The s21e drives me crazy. We've had a lot of fun together, but now I finally write down how to make it boot a Linux installer from a USB stick. First of all: By default it's "Fn + F2", but I immediately disable the Fn-Default back to normal F-Keys. If go set "Configuration > HotKey Mo...

Von einer unbekannten alten Kinderschallplatte mit Heinzelmännchenliedern darauf. Das ist der Text eines davon. Ich konnte leider noch nicht herausfinden von wem dieses wunderschöne Lied ist: Wann werden die Menschen? Wann werden die Menschen endlich klug? Ja, wann werden sie lernen, dass das Gerede...

Hashcode validation of ISO disk images in the archive:

Most end users:

select, right-click, select, wait, done.

Hacker:

"Eh. That's exactly what I proposed:"

Code: Select all

for i in *.iso; do md5sum -c $i.md5; done

"I don't get why yours should be better.\n"

0) Pinbelegung Meine: T568A (Siehe: ANSI/TIA-568 ) Auf den meisten Dosen ist die Farbkodierung dafür aufgedruckt, aber steht nur "A" oder "B" (ohne "TIA-568"). 1) Ablängen * Maß anlegen (zB Kabel ab Zugentlastung "_---_" bis kurz nach den Klemmen-Ende. ca. 6 ...

[PROBLEM] On a fresh install of Xubuntu 20.04.1, I can't install openssh-server :? The following packages have unmet dependencies: openssh-server : Depends: openssh-client (= 1:8.2p1-4) Depends: openssh-sftp-server Recommends: ssh-import-id but it is not going to be installed E: Unable to correct p...

[PROBLEM] Fresh install of Xubuntu 20.04.1 (on a HP Probook 430 G6), I shortly see the following error message flashing before grub's loading: error: can't find command hwmatch The system boots fine, but this error wasn't shown running Xubuntu 18.04 on that notebook. Also I like having no errors/wa...

This is just a quick rip-off (so I don't lose this information) from a [url="https://www.epanorama.net/documents/telecom/telephone_intercom.html]document at "ePanorama.net": "Use old phones as an intercom (Markus Wandel, 1990s)"[/url] Very simple intercom circuit Get two pho...

Impedance is like great rock 'n' roll.
Understanding everything about it is complicated,
but you don't need to understand everything to "get" it.

Source: What Speaker Impedance Means and Why It Matters: Lower impedance is the norm in high-quality audio equipment (by Brent Butterworth)