Gnome control center crashes


The gnome control center, which resposible for the system settings,
doesn't work any more on my system. It crashes with a segmentation
fault ("Speicherzugriffsfehler"):

desktop ~ $ LANG=C gnome-control-center
Speicherzugriffsfehler (Speicherabzug geschrieben)

I've already tried reinstalling it, but that doesn't help. :-(

Any ideas?


Clipboard changes?

Did anything change in any recent updates with the way the system
clipboard is handled?

I ask because the clipboard works fine on my Xubuntu 18.04 host, but
the bidirectional clipboard setup between the host and my VirtualBox
VMs no longer works.

I suspect this is a VB issue because at work I run Win 10 with an
Xubuntu VM and it fails there, too. (At home I run Xubuntu with Win 7



Problem with sound and VB

In the last week or so, I have lost sound on my VirtualBox Windows 7
VM. I've tried a number of different VB configuration options, but
all that happens now is it crashes (BSOD) every time it comes up.

I can't help wondering if something changed in my Xubuntu underneath
that may be contributing to the problem.

The VM normally comes up with output enabled using PulseAudio as the
driver and Intel HD Audio as the sound settings.

USB3 to SATA 3.5" enclosures without energy-saving mode


do you know any USB3 to SATA2 or SATA3 bridge, 3.5" HDD enclosure for
less than 25,- €, that is without an energy-saving mode and at least
allows usage of drives up to 2 TiB?

A long time ago I purchased a WD Elements. After a while, between 10 and
30 minutes, at the moment I don't remember the exact idle time, it spins
down. It's a bundle, so I can't replace the HDD without breaking the
enclosure and it's USB2. Until now it is the only drive, that has got an
energy-saving mode, that does work without issues.

Ubuntu on Windows (setup and apps)

I enabled Ubuntu on Windows 10 some time ago and have been using it a
little. I'm still setting things up, and have found a few oddities.

I found a great guide to setting the console to look like normal Ubuntu:
<a href="" title=""></a>

That's fine, but I actually am used to the Xubuntu flavor, which is
different, and I set my terminal background to something yellowish because
I find dark backgrounds make it hard to read stuff -- no mater which of my
several monitors I try.

odd file

I emptied the trash when two odd files appeared in the trash bin. Here is
one of them


the other also began with 'refresh'

Does this mean something such as a hack attempt?

I can no longer see either file in the trash.


MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL) Recommends the Use of Ubuntu Linux

Good morning from Singapore,

MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL)
recommends the use of Ubuntu Linux.

Read link below:

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

This is a testament to Ubuntu's popularity and lead among all the
various Linux distributions.

Thank you.

The Gospel for all Targeted Individuals (TIs):

[The New York Times] Microwave Weapons Are Prime Suspect in Ills of

OT BT home network oddities

Hi all (mainly UK BT users)

When I take my netbook to a friends and update/upgrade Ubuntu (sudo apt update
or sudo apt dist-upgrade) his whole network slows to a crawl, AFAICT my speed
seems fine (at least compared to my home speed of 5-600k)

The netbook was at one time owned by my friend and he recalls no problems then

his network usually runs at 30-35mb with a latency of 15-20, I can't give an
actual speed for when I am updating as his network latency goes beyond 500 and
nothing else works (his smart TV buffers until it times out, the smart energy
monitor shuts down, his Echo goes to

PAD with ubuntu


Is there any PAD which has ubuntu installed as default OS?
Or, can we re-install Android based PAD to ubuntu?


Right click menu for running apps in dock


I've been running 19.10 beta on my machine for a couple of weeks now
and had virtually no problems, however in the past couple of days I
had a problem with the dock. Before I used to be able to right click
on the icon of a running app to pull up the menu, which was useful for
apps such as the terminal in order to open a new terminal.

A couple of days ago this stopped working, I assume this is a change
in the Gnome 3.34 release which has been landing in 19.10 over the
past few days. Is there a way to get the old behavior back?



Twin HD & Grub manu


I have a box which now has 2 (or 3) HD's with various OS's (U16.04 / Win7 &
U18.04 / U19./04) this box shares a monitor with another PC

When I boot I would "like" to be able to choose from the above OS's, but I can
only choose the OS on one or the other HD if I go into Bios and change the boot
order each time, to make it harder, I have to keep swapping the monitor back to
this box as it's automatic, and switches to the other PC every time the screen
goes blank during boot

How can I get all the OS's on Grub(2) Menu?

I thought that during boot the OS's were scanned and added

an error occured during signature verification Ubuntu 19.04

I am using a virtual machine downloaded from here
<a href="" title=""></a>
when I do
osboxes@osboxes:~$ sudo apt-get update
[sudo] password for osboxes:
Get:1 <a href="" title=""></a> disco-security InRelease [97.5 kB]
Get:2 <a href="" title=""></a> disco InRelease [257 kB]
Err:1 <a href="" title=""></a> disco-security InRelease
The following signatures were invalid: BADSIG 3B4FE6ACC0B21F32
Ubuntu Archive Automatic Signing Key (2012) < ... at ubuntu dot com>
Get:3 <a href="" title=""></a> disco-updates InRelease [97.5 kB]

How can I get past the blank purple screen on my Ubuntu 18.04 LTS system?

Hi folks

After coming back from a 2 week holiday, I discovered that I couldn't get to my desktop PC's Ubuntu desktop. After entering user and password information, the information is accepted but the screen becomes a blank purple, and the mouse disappears.

What I've tried so far:
1. I can boot into CLI by adding a '3' to the appropriate line in grub.
2. I can log in remotely via ssh.
3. I can get a remote desktop GUI.

What hasn't worked:
4. Adding 'nomodeset' to the linux line in grub. If I do this, my screen goes black after logging in. (I can still SSH in and RDP in.).

systemd / active (exited)


what do I have to do that systemd shows correctly if a daemon is
running or not?

helmut@h2786452:~$ sudo /etc/init.d/clamav-daemon-chroot status; echo $?
_ clamav-daemon-chroot.service - LSB: ClamAV daemon
Loaded: loaded (/etc/init.d/clamav-daemon-chroot; bad; vendor
preset: enabled)
Active: active (exited) since Thu 2019-08-29 12:33:49 CEST; 1h 23min
Docs: man:systemd-sysv-generator(8)

Aug 29 12:32:58 h2786452 clamav-daemon-chroot[8654]: * Starting ClamAV
Aug 29 12:33:49 h2786452 clamav-daemon-chroot[8654]: * ClamAV daemon
is now up and ...!
Hint: Some lines

lxcfs info


When running 'pstree' I see a line which shows:


Do you know what is lxcfs and how it influence the OS?

I am running ubuntu 18.04:

$ uname -a
Linux ubuntu-18.04 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52
UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

thanks in advance.

Comparing two directories

I have a directory with graphics in it, i.e., Graphics/example. In order to include it in the shortcuts listing I renamed it, i.e., Graphics/Graphics-example (or at least that is what I thought I had done.). However, I somehow created a new directory with the files copied to it. Over time, w/o noticing, I have saved files to both sub-directories. How can I compare the two directories to find any different files?

CD/DVD-Drive not found, problem with SCSI


I've set up my system some month ago, and now there is no more
CD/DVD/DB-drive recognized any longer!

I don't have /dev/cdrom, /dev/dvd or /dev/sr0.

There's also no "cdrom" in /etc/fstab.

Wodim says this:

$ wodim --devices
wodim: No such file or directory.
Cannot open SCSI driver!

"lsblk" doesn not list "sr0".

Any ideas?


Ubuntu is standard OS on new computer and Ubuntu to be floated and LTS to go to ten years


I have just found these reports;

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

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

Use of Bluetooth to test programs.

I'm very ignorant of Bluetooth and of WiFi.

I appear to have two Ubuntu laptops that are "Bluetooth enabled", and I am
wondering on a very cursory level whether these computers can use Bluetooth
in lieu of a WiFi router to test two instances of a program that uses Java
sockets to exchange information peer to peer..

I am using WiFi when I test my programs at home, but cannot use WifFi if a
router isn't available - when I am demonstrating these programs to others,

What are my options?



Update for UbuntuMATE 16.04.6 broke the GUI


A few hours ago, I performed a system update on one of my UbuntuMATE
16.04.6 systems, and it has broken the system.

The panel in the GUI is broken, and the taskbar has been eliminated,
by the update, rendering the GUI unusable.

Is it possible to reverse the system update?

Kind of OT - Error when forwarding spam to Centurylink

This is probably pretty OT but I have to ask anyway just because the
idiots at my ISP think the problem is because I'm running Linux and
Evolution. Every time I try to forward a spam to their
<a href="mailto: ... at centurylink dot net"> ... at centurylink dot net</a> address I get the attached screenshot.

How can I transfer photos from my IPhone to my desktop computer?


I am having problems accessing photos from my IPhone.  I am using Mint
with the Mate GUI. Here is what I have done.

1. I connected my IPhone to my desktop computer with a USB cable.

2. My desktop shows the IPhone has been mounted.

3. On my IPhone, I entered the password when prompted.

4. On my desktop, The PIx program starts and shows the pictures
directory where the photos (on my desktop computer) should be put.

5. When I press OK, nothing happens.

It looks like the security on the IPhone or maybe Linux (or both) is
interfering with the transfer.  What should I do?

Bill Stanley

Moving to a new computer

I need to move Ubuntu to another computer. Both computers use Intel chip sets.
What I want to do is just move the hard drive from one to the other. I know
that all the devices will not be the same so what I want to know is how to
update the Ubuntu configuration on the new computer so it recognizes all the

Can't boot off of encrypted volume with Linux 5.3-rc4

I'm testing out a mainline kernel to see if it fixes some hardware issues
I'm having with my laptop (X1 Carbon gen 7) but I'm finding that booting
any of the 5.3-rc's results in an error that seems to be related to

Ubuntu to Arch complete data migration

I want to move all my files and folders from a Ubuntu laptop to another
brand new computer (ubuntu OS). I have localhost with web server (Apache,
PHP, etc). I want to clone everything including users.

My questions
1- what is the easiest way to do this?
2- do I need to partition hard-drive of new PC exactly as old one?
3- will root and other user credentials stay the same?

Any other suggestion appreciated,

How do I transfer files from Android cellphone


I have an Android cellphone that I connect to my UbuntuMATE 18.04
computer via USB tethering, and, use that for accessing the WWW on
that computer.

On my cellphone, I have a number of image files (screenshots) that I
want to transfer to the computer.

Rather than attaching each file to a gmail email message composed on
the cellphone, and, sending a copy of the file, for downloading to the
computer, how do I direcly transfer the files?

I have searched using google, and, the closest that I found to an
answer, states that, upon connecting an Android cellphone to a
computer, via USB, a w

apt and apt-get


I am running ubuntu-18.04, which has both apt and apt-get for package

$ apt-get -v
apt 1.6.10 (amd64)

$ apt -v
apt 1.6.10 (amd64)

Are these two programs the same one? which is suggested?


Linux Journal says goodbye

from their website:

"On August 7, 2019, Linux Journal shut its doors for good. All staff
were laid off and the company is left with no operating funds to
continue in any capacity. The website will continue to stay up for the
next few weeks, hopefully longer for archival purposes if we can make it
–Linux Journal, LLC"

I just feel sorry about that.


add swap to cloud host (KVM)


I have two cloud hosts both which are ubuntu, one has swap enabled:

$ free -m
total used free shared buff/cache
Mem: 991 88 233 29 670
Swap: 974 136 838

Another has none:

$ free -m
total used free shared buff/cache
Mem: 985 423 171 26 390
Swap: 0 0 0

So how to add swap to the system?


Turning off automount

I do a lot of stuff with drives from other systems, mostly from an outfit I
volunteer with.

Alt+Tab not working on 19.04

At some point recently (possibly when I upgraded from 18.10) Alt+Tab
has stopped switching between windows. It now does nothing.
Searching has not helped to track the problem down. Can anyone
suggest what I might have done to cause this? Another 18.10 system I
have is ok.

Colin L.

resolv.conf questions


After installing ubuntu-18.04 I found there are the lines in

options edns0

I am not familiar with Linux enough, having questions that:

why does nameserver set up to this address rather than a public DNS such

How to disable it?

what is options edns0?


Firefox not saving passwords (68.0.1 on Ubuntu)

This isn't strictly Ubuntu, but:

Firefox doesn't seem to want to remember passwords any more! That is,
it doesn't prompt me to save them, and doesn't save them. My Google-fu
has failed me, too.

This happens with a completely fresh profile, and the "Ask to save
passwords" option is definitely checked.

Oddly, some of the other profiles I use have stored passwords that work
just fine.

Anyone have more of a clue than me as to why this might be happening?

Regards, K.

PS: I only store passwords for MFA-secured sites... don't recommend
doing it otherwise.

Trouble installing Xubuntu 18.04 on brand new Del 17 3000

I just picked up a new Dell Inspiron 17 3000 laptopto help my girl
upgrade to a newer piece of hardware.

However, the Dell does not seem to like Xubuntu 18.04 DVD installer.

I tried disabling UEFI (and a host of other related settings), but
then it won't even boot the Win 10 that came preinstalled.

What I did:

1. Inserted my 18.04.1 boot DVD.
2. Powered up the Dell and selected option F12 (boot options)

Upgrade to netplan, predict new interface name


I plan to upgrade 16.04 LTS to 18.04 LTS including netplan. Is there a
way to predict the new interface names? I would like to prepare the
yaml files to be able to ssh-in after the reboot.

Thank you!

advanced options in openvpn

Trying to save advanced options in openvpn using network manager in 18.04.
There does not seem to be a save option. Perhaps the window were to expand
fully it would reveal a save button. It won't expand any further by any
method I know of to reveal the save button.

Any suggestions?



Share home directory between 2 18.04 installations

So I have a broken 18.04 (#1) installation, and installed another 18.04
(#2)instance beside it.

The new 18.04 (#2)cannot see the original home directory.

from the first installation:

mythuser@amethi:~$ cat /etc/fstab
# /etc/fstab: static file system information.
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed.

Tip for Desktop Memory management, new vm tuning option

Recent Linux Kernels since Ubuntu 16.04 have had changes to Virtual
Memory management that drastically hurt performance on Desktop loads
where RAM is not always sufficient for all running apps. With 4 to 8 GB
desktops it's easy, if multi-tasking, to starve the RAM.

Restoring backups and effect on GRUB

I'm working on backup scripts, and want to make sure I understand the
consequences of what I'm doing. In particular, I have still not decided
how I'm going to back up my / partition: tar/dar or dd,
and I'm wondering what effect there is on GRUB if a partition is moved,
resized, or restored from a tar/dar archive, because I'm thinking some of
the above operations would change where the kernel is.

Request for explanation of error message


Can someone please advise as to what the following error indicates?

The below is a subset of multiple repetitions of the error, with the
number in the square brackets, immediately after the word "kernel",
progressively increasing in each line.

The error message appearsat the command line console ( <CTRL><ALT><F1>
), and, in /var/log/syslog , from whence the extract is copied.

Jul 27 00:06:43 bret-MD34045-2521 kernel: [332491.053210] pcieport
0000:00:1d.0: AER: Corrected error received: id=00e8
Jul 27 00:06:43 bret-MD34045-2521 kernel: [332491.053216] pcieport
0000:00:1d.0: PCIe Bu

logitech headset stopped working

Hi there,

my logitech headset up a sudden stopped working. Yesterday it still
worked fine

ubuntu 19.04, logitch model ??

it is linked with that small usb dinghy (bluetoth?)

any idea what could be the reason



Nepotism, Conflict of interest: Debian GSoC/Outreachy/OSI board

Can we trust our upstream?

Are these hidden relationships putting Ubuntu devs at a severe

Is it safe for Ubuntu to encourage people to get their packages
into Debian, should we give them options to work around Debian?

People have been arriving to DebConf trying to pick apart the
recent concerns.

copy/paste not working

Running Ubuntu 16.04. Also use other pgms from KDE - kate, falkon,
konq, etc, which I use a lot, and other misc non-Ubuntu pgms. Have had a
few copy/paste problems in the past - usually in/out of KDE pgms. But
after the last couple of updates I can't do any copy/paste involving
any KDE pgm. Also copy paste from one KDE pgm to another doesn't work,
and even trying to copy text from one place to another within the SAME
kate document doesn't work! It is MUCH worse after updates.

Is there a way to get this to work?

Graphics - Was: Newest Gnome versus LTS

On Fri, 19 Jul 2019 01:36:13 +0800, Bret Busby wrote:
Hi Bret,

all graphics, NVIDIA, AMD or Intel could cause issues, e.g. when used
with some software.

Is Ubuntu 19.04 able to support Intel Core i9-9980XE Extreme Edition or AMD Ryzen 9 3950X?

Good morning from Singapore,

Is Ubuntu 19.04 able to support Intel Core i9-9980XE Extreme Edition or AMD Ryzen 9 3950X?

Intel Core i9-9980XE Extreme Edition has 18 cores and 36 threads while AMD Ryzen 9 3950X has 16 cores and 32 threads.

Intel Core i9-9980XE Extreme Edition technical specifications:

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

AMD Ryzen 9 3950X technical specifications:

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

What I am trying to ask is, is Ubuntu 19.04 able to su

Thank you


I just want to give a big Thank You! for all the help from kind souls
on this list, with my curruption problem.

I'm very willing to give something back, if I can.


Reminder: please stay on topic

Good evening all,

On behalf of the moderation team I'd like to send out a friendly
reminder. Can everyone please remain on topic for the list. This list
is sent to thousands of people and to remain a healthy support channel
needs to have the correct signal to noise level.

If you're unsure of what the list is for please read the information
sent in the reply field of every email - "Ubuntu user technical
support, not for general discussions".

Newest Gnome versus LTS


I've run Ubuntu 19.04 for some days now, and I didn't notice any
corruption (see thread "Filesystem corruption"). It may be because of
the BIOS has been upgraded, some bug in Kubuntu, replaced SATA cables,
no more dm-cache (SSD as a cache for HDD), or...

Now I am about to set up my machine anew. But I still can't completely
make up my mind, which release I should use. I have the choice between
a more stable 18.04 LTS, and a more up to date 19.04.

I tend to choose 18.04 LTS, but I wonder what I'll be missing compared
to 19.04. I've found out about Gnome Tracker.

Off subject but I need help

My telephone and internet services have been converted to NBN. I am
having considerable problems which Telstra seem unable to fix. The
telephone service is unreliable, call go to voice mail and the phone
does not ring and yet we can call out. Resetting the telstra modem fixes
the problem for a day or so but the it comes back. Most of the time the
internet worked normally.

(not) one browser for all - Was: Software repository failure

On Tue, 2019-07-16 at 14:20 +0200, Liam Proven wrote:

openssh-server for 18.04 LTS


I have a new ubuntu 18.04 VM on a locked down network. I am not able to find the openssh-server package. Apt-cache search only sees openssh-client. I don't have access to a lot of the default repos yet. I'm working with the network team to get things opened up a bit. Can someone point me to a repo where I can get openssh-server?



Correct posting format

New to the list (newly returned actually).

I want to get off on the right foot with correct posting format. I can
figure out bottom posting and proper quoting in the various gmail phone
clients. But can't find a setting to turn off HTML format for this list.

Any thoughts / guidance?


Software repository failure

I was trying to update Ubuntu 18.04 on a laptop I seldom use and got a
message saying it could not connect to a repository check your internet
connection. Nothing was wrong with the connection. It did not say which
repository it could not connect to, so what log do I look at to identify it?

Regards, Jim

How to keep Gnome up to date in a LTS system


I'm wonderung, if you have an Ubuntu LTS version, how do you get
recent Gnome3 upgrades? I mean, sooner than in two years, with the
next LTS version. I want to stick to LTS, since Lian Proven
recommended it (and he seems competent).

I've searched for Gnome PPAs, but this one gives more than 2000 (!) hits:
<a href="" title=""></a>

I've also googled some, but couldn't find the answer.

So how do you (gnome-using) guys keep your gnome up to date? I've
heard that there is a lot of developing going on for Gnome.


Can one make Eye of Gnome detect file type rather than use suffix?

In general Linux ignores file suffixes like .jpg and .png to identify
file types as it uses the magic number within the file itself.
However Eye of Gnome seems to use the suffix which is a bit of a
nuisance (I just got some images mailed to me which had suffix JPG but
were actually PNG files).

File viewers like ristretto ignore the suffix and can view the files
OK but Eye of Gnome outputs an error. I want to use Eye of Gnome for
its printing ability.

Is there any way I can make Eye of Gnome ignore the file suffix and,
instead, use the magic number?

Cloning an EXT4 partition

I want to use partition clones as part of my backup strategy, or at least
experiment with them. I've been happy with ntfsclone for windows
partitions, and just noticed that there appear to be utilities for doing
the same with other partition type, like vfat and ext4.

Unfortunately, my first experience with partclone.ext4 (part of the
partclone package) was not good. It persists in giving me errors with
messages that don't make sense: File too big when there's plenty of space,
for starters.

Anyone have experience with this package, or any replacement?

++ kevin

Re: wiped disk - no longer bootable

Zitat von Volker Wysk <>:

It's crazy.

wiped disk - no longer bootable


The problems pile up. I've wiped the first megabyte of both devices
(HDD and SSD), because I got a message on boot which sayed that the
disk with a specific ID can't be found. Using "dd if=/dev/zero
of=/dev/sda ...". Then installed Ubuntu again, which appeared to
succeed. But when booting now, it says that there is no bootable medium.

So I have wiped something which I shouldn't. How do I restore that? It
doesn't seem to be something which fdisk does.



Problems with Ubuntu install on Macbook

Hello I have a macbook I am trying to install Ubuntu to and their are two issues. One after smooth install I try to boot to ubuntu. Get an Ubuntu purple boot image and it freezes with this.It does not go into the desktop. The other issue is the built in keyboard and mouse don’t work.Any ideas on a solution?

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