Setting up Xscreensaver in Ubuntu 16.04

Just picked up a refurbished Lenovo T420. Been working through setting up
16.04 on it and have run into issues with Xscreensaver daemon not running
at startup. Found an answer to the problem. The OP said he went to his
core applications file and found 'screensaver - empty'. He added
'screensaver - xscreensaver' and that took care of the problem. I don't
know which file he was referring to and my google efforts haven't turned up
an answer.

I have already setup the startup applications file command 'xscreensaver

Hiding a specific user from the User Accounts GUI

Hi All,

I install Ubuntu to computer illiterate people.

During the install I want to create an admin user I can use to manage their
computer using SSH.

Sometimes the user logs out and tries to login with my admin users and get
frustrated when they do not succeed...

Is there a way to hide my admin user from the user so they won't try to
login with it?

The users are aware of this user, of course...



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

According to these instructions, mariadb-server needs to be installed.

Windows opening half off screen - they are not accessible

This morning after starting my laptop I opened gedit and
it opened half off screen. I opened Chrome to get to my
email and it opened half off screen. I cant click on them
to move them back onto screen. I was able to open firefox
and it opened in the middle of the screen. Ive had no
external monitors connected or change in display. How can
I move them back?


Unity & 18.04 (and maybe 17.10)

Hi All

Just a desktop query

If I upgrade 16.04 LTS to 18.04 will Unity still be there or will the install
remove it in place of Gnome?

Re: Concerned about future 32 bit server support

08 August 2017 at 17:07, David Fletcher wrote:
Concerned about future 32 bit serve (at least in part)

I know that Tails3 onwards (based on Debian) have dropped all 32 bit support,
which is a PITA for a mobile, secure, OS, when you don't know what hardware you
may want / need to use it on

Concerned about future 32 bit server support

Hi all,

There was a fairly long discussion over on the Kubuntu list, about
dropping 32 bit support.

My concern is that I have a little home built machine with a 32 bit
Atom processor that has been running for several years and perfectly
serves my needs for a low power headless server. Will 32 bit server
support continue into the foreseeable future?


L-o-n-g delay for rc.local in systemd on Ubuntu.

Hey, all. I've got some stuff in my rc.local, and it takes *forever* to
execute -- three+ minutes. (Note that the machine -- a virtual one --
is up in something like 20 seconds.) I *need* this stuff, which is
lightweight in the extreme, to execute much earlier in the boot process
than that.

Anyone have any ideas on how to make that happen?



ZoneFiles Showing: Windows 10 As Guest OS on Ubuntu 14.04 As Host OS - VirtualBox

Hi All,

I have two computers running the same version of VirtualBox (5.1.26). Both
run Windows 10 as Guest OS (not the same VM file).

On one of the computers, the Win10 VM show the zone.identifier files in
Windows Explorer, and it is very annoying...

This doesn't happen on the other computer, and I can't figure out what's
causing it...

Any ideas?


Amichai Rotman

Do the ubuntu repo offer an conglomerate sort of perl pkgs

Sorry the Subject line is a bit confusing... couldn't think, right off
hand, of a good way to express what I mean briefly.

I run into some perl pkgs missing every once in a while, that I'd like
to get installed but would rather not have to screw around with cpan if I
can help it.

I'm a recent gentoo user where we had quite a lot of perl pkgs
available thru the pkg managing tools (emerge and friends) called
g-cpan .. still used cpan but a good bit of it was done by emerge.

I wondered if apt has something like that.

How can I make the console even bigger

server ubuntu provides a faily large console, I'd like to make
that even larger.

This is just this last hour been installed (17.04) into a Vbox vm
running on an openindiana (solaris 11) host.

I used the server ISO.

Is the largish console being done in the kernel using KVM settings or
in the grub configuration?

Whatever way it is, how can I make it even bigger.

I think it is 1024x(something close to 800 maybe)

I'd like to try something like 1400x1050 or there abouts.

Anyone know how to go about something like that?

libnl upgrade uninstalls network-manager


When I run apt-get upgrade, it holds back on upgrading three libnl-3
packages. When I specified to upgrade them, the upgrade removed
network-manager and network-manager-gnome, stopping my Internet

This is with the upgrade of libnl packages to the 3.2.21-1ubuntu4.1

Does anybody know why this happens? How do I upgrade the packages
without removing network-manager and network-manager-gnome, or is this a

Thank you.

- George

How to boot to console, use startx for X

Install was the server *iso
Installed Desktop lxde

What do I have to set or remove in order to have ubuntu boot to
a console terminal... from where I can run `startx' when I want it?

how to disallow weak algorithms from ssh


|hi ther,|

|I had one of my servers tested using <a href="" title=""></a>

it did point me to the following week algorithms that the server seams
to allow.

Where can I disallow them?




Diffie-Hellman with 2048-bit Oakley Group 14 with SHA-1 hash
Oakley Group 14 should be secure for now. SHA-1 is becoming obsolete,
consider using SHA-256 version.

iptables Bridge Logging


I'm using 4.4.0-89-generic #112-Ubuntu Kernel.

I've setup a bridge

bridge name bridge id STP enabled interfaces
br0 8000.00322e111b2 no enp3s0

Why is it possible to DROP packages from a KVM guest on the host INPUT
chain, but not to LOG them?

I've not loaded any bridge-nf modules. bridge/nf_call_iptables is 0.

- Chris

where to get sysv-rc-conf for zesty

Can anyone offer an idea where I might get sysv-rc-conf?

It appears not to be available on zesty

Full disk encryption of Ubuntu for certain partitions at install time

I have two unencrypted partitions containing Windows 10. Now I want to
install Ubuntu 16.04 into the remaining free space that I have, with full
disk encryption ie. encrypted root, encrypted swap, and encrypted home.

And all of the above 3 needs to be in separate partitions.

I have got some hints from the following tutorial-:

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

But the problem is that the tutorial shows only how to add a single
encrypted partition and mount it as root (/).

set up global sock5 proxy

Is there any method to set up a sock5 proxy? Maybe setting up a
iptables rule or something? I have set up a shadowsocks client on my
Ubuntu and have successfully pointed my browser to use that proxy. But
I want some other programs to use that too.

Any ideas?


(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.

How to force reading CD(-RW)?

Sometimes, I think maybe when I've used cdrecord, Nautilus won't show any
contents of a newly inserted CD-RW (I'm not sure this is specific for
CD-RW, but I don't use anything else). I know for sure that it's not empty,
the CD-RW itself is almost new, used twice or maybe three times and it
works in other drives. And it worked in the one in my Ubuntu computer
before I used cdrecord last time. It usually works again after rebooting,
but my question is now: Is there a way to force Nautilus to actually read
the CD-RW without rebooting the whole computer?

Replace xorg.conf with xrandr for dualhead on demand


do you have any hints on what to consider, when writing a script for an
LCD monitor and a CRT monitor using an Intel graphics?

I already have done some research on my own [1], but actually I booted
with an xorg.conf, IOW it's not removed yet.

Re: MikeeUSA -- Notice Bruce Perens has NO response (nor does Moglen). [Was: Re: GrSecurity]

Malformed ascii art saying "Don't feed the trolls"

IE: Can't attack the message, attack the man.

Because White Men Programmers simply do not know what they do not know
and take proper, correct, legal analysis from a license attorney dealing
with a relevant issue as "trolling".

Here's a response from another attorney:
<a href="" title=""></a>
<a href="" title=""></a>

Notice Bruce Perens has NO response.
Neither does Professor Moglen who apparently forgot to include a
no-revocation clause in version 2 of the GPL when he drafted it

Ubuntu on (only) MacBook External drive (part2)

Hi Again

After my user killed two Xenial "live" USBs (one stick & one SSD disk) and
fried his MacBook's own Boot (fixed later), user now wants (thinks) that
putting Xenial on an SDRam card that will live full time in the MacBook (flush
mounted) is the answer

User says "Duel Boot" but that may mean different things to you me and a
MacBook user

To me it means Grub menu and deciding which (installed) "OS" to boot

To a MacBook user it may mean press/hold option key at boot and choose which
"Disk" to boot

To others I guess depends on what hardware "most" of their machines are

Now so I am

Why does X loses my keyboard key mapping?


On my 16.04, I re-map some keyboard keys at login using "xmodmap
/home/rick/.Xmodmap" in a shell script. I rarely log out and usually,
sometime after 24 hours the system re-maps the keyboard back to its
default key settings. Would anyone have any idea what would cause X to
do this?


Odd network behavior

I'm seeing some odd network behavior that I don't understand. The
problem started when I decided to improve the wireless coverage in my
house by using an extra router as second access point. Both routers
have the same SSID and the same encryption and password. The second
router has different LAN IP address, a different channel[using 5 and
9], and the DHCP server is turned off in the second router/access

Deg Error

Hi All

Have googled this but most answers are re 3rd party software

I have Zesty installed on a Asus (AR6P) Laptop when I run

Sudo lshw -c network (or any lshw really)

I get "Segmentation error (Core Dumped)"

but if I run

lshw -c network

I get the warning I should run with Sudo, but it works (AFAICT)

If I boot a live 16.04.2 or 16.10.I get the same thing, not tried 14.04.5 yet

all fully updated of cause

Any ideas how to stop this

Configuring NetworkManager to use systemd-resolved without dnsmasq in 17.04

Hello! I have some questions regarding name resolution system in 17.04.

After upgrading to 17.04 from 16.04 I can't figure out how host name
resolution system is meant to be configured. First, I've noticed that
after upgrade search domains have disappeared from |/etc/resolv.conf|.
They came back once I've removed |/etc/resolv.conf| symlink and
restarted NetworkManager. But then the contents became as follows:

|# Generated by NetworkManager search mydomain1 mydomain2 nameserver |

Ok, search domains are there. But why nameserver is there?

No Wifi with Realtek RTL8723BE on Ubuntu 16.04

I have installed Ubuntu 16.04 on my laptop alongside Windows 10. I am
unable to access my home Wifi because of a very weak signal even if I keep
the laptop near the router.

I have tried installing the driver as per the instructions over here

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

But I keep getting the following error when I am installing my driver-:

(Reading database ...

Strange rsync behavious

I am running 2 rsync commands , one after the other.

The first does a rsync over ssh to sync between a owncloud server and a
backup server:

rsync -v -a -H -i -L -e ssh --delete
... at domain dot org:/var/www/owncloud

I then user rsync again to sync between the main backup drive
/mnt/backup01/ and the second backup /mnt/backup02/

rsync -aviH --delete /mnt/backup01/ /mnt/backup02/

Thing is when the first one changes verry little

07/29/17_20:12 backu

Yes you have standing to sue GRSecurity.

It has come to my attention that some entities are claiming that you,
dear Linux Hackers, (1)need to go through some foundation or get some
permission from upon high in-order to sue the progenitors of GRSecurity
for their violation of section 6 of the terms underwhich the linux
kernel is distributed (version 2 of the GPL).

Install to external (I think) SSD

Hi all

I'm trying to show the advantage of Ubuntu (Xenial Xerus) to a friend who only
knows iBook (OS X Yosemite)

We made a live USB (64 bit) and that runs fine, bit he fears that as the
initial (grub ?) screen has such small text he could install over his OS and
also the Install icon wont stay away once up & running, so he wants to install
to an (external) SSD

Is this possible?

NAS filesystem that supports hard links

For a year or so I have been using a d-link sharestation NAS in RAID0 for
backups of a ownCloud server. I've been using duplicity but now due to the
size of the backup this is proving unpractical (I have to take ownCloud
offline once a week to do a full backup and it is taking over 8 hours).

I am moving over to a solution that used rsync and hard links but I don't
think I can use this NAS, or indeed any NAS. Originally I used duplicity
as I did not think the NAS supported hard links but it says it does support
MAC TimeMachine so I am thinking maybe it does.

LCD monitor


mainly for Ardour usage, but also for office work, browser etc. I want
to get rid of my CRT monitor. I wonder how much difference is between a
300,- € and a 150,- € LCD monitor.

Regarding a test the 8. best monitor is an Eizo FlexScan EV2450
the 48. best monitor is a LG 24MB56HQ-B

Both are 24" monitors. I can't say anything about the quality of this
test but at least the test was updated, a few minutes ago the rankings
were 7.

ipvsadm problem


Ipvs admin is not running.

DisplayPort not recognized

I just bought a refurb HP 8740w "EliteBook" and installed my Xubuntu
16.04 drive in it. Everything seems to work so far except the display

To verify that it works, I just took out my Linux disk and put the
Win7 disk back in, and it has no trouble recognizing the DP connected

In Linux, I get nothing. The Display app is set to configure new
devices when they are connected, but nothing shows up. The monitor
control app that lets me decide where to place the screen does not
show up. There are no errors I can see about this in the system logs
or the Xorg log.

USB-VGA suggestions?

Hey, all. I've got the weirdest server I've seen in some time: it's got
four (independent) blades, but no video. You can pop the slot off, buy a
VGA connector with a cable running to the VGA header, and plug that
in... but it's a PITA. What it *does* have for every blade, though, is
USB -- two of 'em. So if I had a VGA-to-USB adapter, and a keyboard,
I'd be golden. But last time I looked, Linux support for those adapters
was kinda questionable. Has anyone had any good experiences?



Re: Problem reinstalling Xubuntu 16.04 - SOLVED

After running into the same drop-into-busybox problem trying to
install my new HP laptop from the same Patriot flash drive I created
via unetbootin, I decided to use a DVD.

Worked flawlessly.

It seems, at least for me, the unetbootin Xubuntu flash drive is NOT
installable. It has failed in every system I have. Looks like I'll
be trusting the still more ubiquitous DVD install image until further

Thanks everyone for all your help.


Transfer file from remote machine to local machine

I am having some trouble with transfering file from remote machine to
local machine.

I got a remote machine A and a remote machine B. Usually I log into
remote machine A using ssh and then use A as a relay to log into
remote machine B. But when I am in B, I don't know how to copy file
directly from B to my local machine.

Because remote machine A is a relay and I don't have write permission,
I cannot transfer file from B to A.

systemd timing

How can I make a systemd service run after all network interfaces are

systemd-sysctl is a one-shot service that runs very early in the
startup sequence; I need it to run again. Ideally every time a network
interface comes up, but a workable solution would be after the network
is up the first time.

Note that I need it to run *again* - i.e., as well as the first time.

I suppose I could set up a new service to do this, but it would be
cleaner if there were a way to tell the existing service to run again.

Regards, K.

[1] /lib/systemd/system/systemd-sysctl.service

mpd not starting

Thank you for reading this.

It's been awhile since I've used Kubuntu because my desktop computer
failed. This is how I had started mpd on my Raspberry pi:

sudo service mpd start

and now this is the response:

Job for mpd.socket failed.
See "systemctl status mpd.socket" and "journalctl -xe" for details.

Those two only tell me that mpd failed to start.

Any suggestions?

Pidgin Zombie process

Pidgin has a status of zombie with N/A on resident memory
and shared memory. Im still using pidgin and havent noticed
a problem but there are at least 100 different pidgin processes

What would cause this to happen and short of killing each one,
what can I do?


Strange behaviour of the "cd" command


On a rather fresh installation of Kubuntu 16.04 I ran into the following

General information:

$ uname -a
Linux tux 4.4.0-81-generic #104-Ubuntu SMP Wed Jun 14 08:17:06 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
$ echo $SHELL
$ unset CDPATH
$ ls -la / | head -4
total 116
drwxr-xr-x 24 root root 4096 2017-06-26 19:05 .
drwxr-xr-x 24 root root 4096 2017-06-26 19:05 ..
drwx------ 2 root root 4096 2016-05-25 11:19 .cache
$ cd /.cache
/usr/bin/ksh: hist[7]: cd: /.cache: [Permission denied]

The above message is exactly what one would expect, and thus ok.

$ cd

Can not set external monitor to left of internal monitor on ubuntu 17.04

- When i connect external, and when i go to display settings, the
external is in right of internal.

I change in this settings by dragging, then apply to set to the left
of the internal.

But it makes black external and i have to plug out and plugin again
to be able to use external and it is again on the right of internal.

this is xml of monitors

sudo gedit ~/.config/monitors.xml

<monitors version="1">
<output name="eDP-1-1">

Can not lock mongochef to launcher in ubuntu 17.04

I downloaded mongochef.

Then i go to its bin folder and run this

*➜ **~* cd Program\ Files/studio-3t-5.3.5-linux-x64/bin
*➜ **bin* ./

Then on launcher , i click add to dash + lock the launcher.

Then i exit mongochef.

I still see icon on launcher.

I click it to launch, it is pending.

Xubuntu install on Win7 laptop fails

I have a Lenovo ThinkPad at work where we are required to have Windows
on the machine. I shrank the Windows partition so I could install
Xubuntu 16.04.2 and run with that without destroying the Windows

delay (or rerun) procps

This is something I'm trying to make happen on a raspberry Pi, but it's
really a systemd problem, so I hope you folk can help.

When systemd.sysctl runs, it runs early - before interfaces are up and
apparently before modules such as IPv6 are loaded. A bunch of IPv6-
related sysctl variables thus don't get set. It does run though -
status says it's been run. If I run it again manually, everything

I want a way to re-run the service late.

Any ideas?

Regards, K.

Samba error message

When doing:
sudo apt-get autoremove, I get the following:

"Setting up samba (2:4.5.8+dfsg-0ubuntu0.17.04.3) ...
Failed to preset unit: Unit file /etc/systemd/system/samba-ad-dc.service is

kvm virsh console


I'm using a KVM. (ubuntu 16.04 lts) But with virsh console I can not
connect to the virtual machine.
Can you help with this ?

# virsh console 10

Icons In System Settings(unity) are Missing Ubuntu Server 17.04

I just installed 17.04 server and then desktop but I have only those icons
(this is not actually my setting, but it is broken the same way)


I tried these command in an attempt to solve it:

sudo apt-get install ubuntu-desktop
sudo apt-get remove unity-control-center
sudo apt-get install unity-control-center
sudo apt-get install ubuntu-desktop
sudo apt-get install unity-control-center
sudo apt-get install unity-control-center-signon
sudo apt-get update --fix-missing
sudo apt-get -f install

But I did not manage to solv

How do you get 16.04 to boot?

For some reason 16.04 has never booted since it went on. It will sit
for hours with nothing coming on the screen, no prompt for user password
or any login screen.

Light-weight job dispatch on multiple machines

Hi, I'd like a command line job dispatch tool to dispatch jobs (each
job is independent from each other and may have different input
parameters) on multiple linux machines.

I am not looking for complex tools like sun grid engine or torque.
Rather, I am looking for something with very little configuration (for
example, the minumal configure is just the machine names and how many
jobs each machine can run in parallel).

Do anybody know if such a light weighted tool available? Thanks.

odd ssh behaviour

Hi, I just installed the latest version of server LTS. I actually
installed it on one PC and put the disk in another. I had to change the
network name but apart from that it all seemed fine. I got DHCP working
and managed to ssh to another machine and do a apt-get dist-upgrade.

Even though I have sshd running I cant ssh into the box from elsewhere, I
tried ssh from a couple of boxes that are working fine., I get

ssh: connect to host port 22: Connection refused

It is using a network cable that I can use fine on another box so it is not
the switch/cable.

Any ideas?


boot drops to grub prompt, disk error

I have a colleague whose Ubuntu 16.04 PC is dropping to a "grub>"
prompt. If he enters "exit", the grub prompt just returns. If he enters
"exit" a second time, the boot process proceeds normally. He says he
sometimes has to "exit" a third time.

Well, mostly normally - except at no stage does he see the usual grub
boot selection menu. This was a problem because in a separate issue he
had screwed up his password and could not get to the recovery option.

nfs on 17.04

I'd be grateful if someone could confirm that nfs works on their 17.04

I've spent 2 days trying to get my raspberry pi to access files on my 17.04
PC, and I need to know that someone else has it working before spending more
time on it. The Pi side of things seems to be OK since it will access files
on a networked NAS drive which is mounted by nfs.

The main online guides (which I've followed) seem to be:
<a href="" title=""></a>
<a href="" title=""></a>
A lot of the online documentation is out of date (e.g.

Issue on some Intel Skylake and Kaby Lake processors


There seems to be a potentially serious issue on some skylake and kaby
lake Intel processors [1].


[1] <a href="" title=""></a>

Linux-friendly laptops

I'm looking at getting (yet anothre) replacement laptop and this time
I'd like to buy one that works well with Linux.

Current options are:

ASUS G751JT (2 of these, possibly 3)
Dell M6700 Covet

The Dell is slightly more expensive, but I'm leaning toward it because
I'm fairly familiar with Dells and they tend to be OS agnostic,
durable and reliable.


upgrade fails with unmet dependencies

Hi there,

on one of my live servers I wanted to do an apt upgrade.

It failed with an error, and now every attempt to upgrade fails.

Can somebody give me a pointer how to fix this?

thanks very much


root@salome ~ # apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information...

Can't boot notebook at all anymore

Before it was just a problem with the SSD. Now the notebook refuses
to boot at all.

It keeps coming up in busybox, but the more command doesn't wokr, or
pieps don;t, so i can't peer through dmesg to see what's wrong.

This is an ASUS N75SF that was running Xubuntu 16,04 just fine until
this weekend. (Last weekend it worked perfectly.

systemd journal using too much disc space

I note that the files in /var/log/journal are consuming 2.9GB and
journalctl --disk-usage
also shows 2.9GB. Since this is on Ubuntu 17.04 installed in an 80GB
partition on an SSD this is a significant chunk of my free disc space.
As far as I can see journalctl is using its default values as there
are no commented out settings in /etc/systemd/journald.conf and I
cannot see any overriding conf files.

I see how to adjust the settings for this but am surprised the default
is so large.


I'm guessing, from evidence found in archived mailing lists, that (mentioned in the email headers in the duplicates) is an
internal domain used by the owner of

I'm also guessing that they are doing something silly with newsgroups
and reflecting this list back to itself.

This email is being copied to that apparent owner in the hope that he
can stop the duplication.

Regards, K.

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