Postings by Volker Wysk

measuring disk i/o performance


I'm about to install an SSD (as a cache for my hard disk). Does someone know a
good tool for measuring the disk i/o speed?


Two ubuntu bugs


I wanna report two bugs in (K)Ubuntu 17.04.

The first one is in the (K)Ubuntu installer. When you enter the new passphrase,
the keyboard is still in English localization. When you're German, this means
(among other things) that the keys Z and Y are interchanged. When you log in,
after the install, the keyboard has been localized.

The second one is the "ubuntu-bug" program.

Upgrade path from MySQL to MariaDB broken? (Akonadi)


I'm trying to install Nextcloud. I'm following the instructions in the
Nextcloud 12 Server Administration Manual, Installation on Linux:
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According to these instructions, mariadb-server needs to be installed.

(OT) Google: "Somebody knows your password"


I've received a mail titled "Jemand kennt Ihr Passwort" ("somebody knows your
password") from Google, and a "security warning" mail, with the same contents.

Somebody tried to access my google account with my password, from an (to
google) unknown device. The login was blocked, because of the device being
unknown to google. I was then guided to change my password, which I did.

Network comprehension question: localhost vs. local IP address


The Moinmoin wiki server can be run without configuration, so you can try it,
without the hasszle of configuring everything for Apache. It starts a server at
localhost:8080. This works.

Now I want to try if it works well with my smartphone. I try the address
<a href="" title=""></a>.

What happened to ubuntu-users?

No new mail in four days, archives ending at the same point in time ... -


Shared library not found


I have a stupid question. I've compiled and installed dspam from the sources,
since I want to integrate a spam filter in my Dovecot mail server (dovecot-

Kubuntu PPA doesn't work


Of the two Kununtu PPAs, one doesn't work for me:

~ % apt update
OK:1 <a href="" title=""></a> xenial InRelease
Holen:2 <a href="" title=""></a> xenial-updates InRelease [95,7 kB]
OK:3 <a href="" title=""></a> xenial-security InRelease
OK:4 <a href="" title=""></a> xenial InRelease
Ign:5 <a href="" title=""></a> xenial InRelease
OK:6 <a href="" title=""></a> xenial-backports In

Does my machine send spam???


I've got six messages, which say, that some spam message can't be delivered.
I've attached one of them.

I've had attacks on my local Dovecot mail server, but they should have been
blocked by fail2ban - ?.

Has my machine been hijacked to send spam?? What can I do?


Volatile certificates?


I've configured fetchmail to fetch my mail from four mail servers, amongst them and I'm using SSL to secure the connection.

This means, that the two certificates of the mentioned mail servers must be
checked. I lack the necessary root and intermediate certificates, for testing
the certfificate chain. So I must trust the two presented certificates, once. I
added the fingerprints of the certificates in my fetchmairc file, using the
directive "sslfingerprint".

That worked fine, for a few days.

Einbruchversuch in meinen Rechner ...??


Ich bekomme in der /var/log/auth.log eine Menge Meldungen, die so aussehen:

Testing an SD card


I have an SD card for my smartphone which I suspect to be defect. Is there a
command to test this? (I can copy it with dd to a file, so far it works.)


Testing an SD card


I have an SD card for my smartphone which I suspect to be defect. Is there a
command to test this? (I can copy it with dd to a file, so far it works.)


"404 Not Found" when doing "apt-get update"


I'm tyring to do a "apt-get update", and it mostly works.

Laptop freezes permanently when closed in operation


When I've closed my laptop, while Kubuntu is running, it fails to wake up
again (when re-opening it).

I get an empty, black screen, with the mouse pointer visible, but not movable.
Everything is frozen. When I closed the thing while at the SDDM login screen,
it again froze, but you get the login screen, with a (unmovable) mouse
pointer, not a black screen.

It doesn't make a difference, if the power is provided by the power cable, or
by (full) battery.

My laptop is an Acer Extensa 2508. The OS is Kubuntu 15.10.

Any idea, anyone?


WLAN missing on freshly installed Laptop

Hello everybody.

I want to install Kubuntu on a friend's laptop (about seven years old), but I
can't get WLAN to work,
although I've installed it on my own Laptop, which did work properly.

There is no WLAN-configuration in the Kubuntu-Installer.

I can't remember the command to report this any longer, but the machine
appears to have a WLAN controller.

On my own Laptop, there is a KDE WLAN icon, in the control bar at the bottom,
where you can chose a WLAN hotspot. This is missing on my friend's.

Huge Kubuntu-upgrade


I'm running Kubuntu 15.10, with the Kubuntu-PPAs. There is a huge update, when
I type "apt-get update && apt-get dist-upgrade". Almost 400 packages are
affected. There isn't any news item about that on

Is this okay? I don't want to break my system. I've had bad experiences with


Cyrus doesn't start on boot


I've installed the Cyrus IMAP server, according to following manuals:

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<a href="" title=""></a>

It appears to work, after starting the server with "service cyrus-imapd
start", but there is an error when booting the machine.

Beginner's question: Are the Kubuntu-PPA's being in use?


I'm new to (K)Ubuntu (but not new to Linux at all). I've installed the
Kubuntu-PPAs with these commands:

apt-add-repository ppa:kubuntu-ppa
apt-add-repository ppa:kubuntu-ppa/backports

This has installed kubuntu-ppa-ubuntu-backports-wily.list and kubuntu-ppa-
ubuntu-ppa-wily.list in /etc/apt/sources.list.d.

But they don't seem to be in effect to me. There is no line with "kubuntu" in
it, in the output of "apt-get update".

missing documentation


When trying to open the documentation of KMail (press F1), I get the message
"Documentation not Found". From timet to time I also get a notification of
something like "Documentation not installed. It is in a separate package" (or
simething like that). Sadly, it doesn't say which package that would be.

How do I install the full documentation, or rather, how is it organized into
packages in Kubuntu?