radek's questions

I'm (desperately) trying to install VLC on my 14.04.

apt-cache policy vlc

returns:

vlc:
  Installed: (none)
  Candidate: 2.1.6-0ubuntu14.04.1
  Version table:
     2.1.6-0ubuntu14.04.1 0
        500 http://mirror.switch.ch/ftp/mirror/ubuntu/ trusty-updates/universe amd64 Packages
        500 http://mirror.switch.ch/ftp/mirror/ubuntu/ trusty-security/universe amd64 Packages
     2.1.2-2build2 0
        500 http://mirror.switch.ch/ftp/mirror/ubuntu/ trusty/universe amd64 Packages

When I try to install, then I get the infamous vlc-nox issue:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 vlc : Depends: vlc-nox (= 2.1.6-0ubuntu14.04.1) but it is not going to be installed
       Recommends: vlc-plugin-notify (= 2.1.6-0ubuntu14.04.1) but it is not going to be installed
       Recommends: vlc-plugin-pulse (= 2.1.6-0ubuntu14.04.1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Attempt to install vlc-nox leads to request of installation of libfreerdp1, and then to this message:

sudo apt-get install libfreerdp1

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  freerdp-x11
The following packages will be REMOVED
  libfreerdp-cache1.1 libfreerdp-client1.1 libfreerdp-codec1.1
  libfreerdp-common1.1.0 libfreerdp-core1.1 libfreerdp-crypto1.1
  libfreerdp-gdi1.1 libfreerdp-locale1.1 libfreerdp-plugins-standard
  libfreerdp-primitives1.1 libfreerdp-rail1.1 libfreerdp-utils1.1
  libwinpr-crt0.1 libwinpr-dsparse0.1 libwinpr-environment0.1 libwinpr-file0.1
  libwinpr-handle0.1 libwinpr-heap0.1 libwinpr-input0.1
  libwinpr-interlocked0.1 libwinpr-library0.1 libwinpr-path0.1
  libwinpr-pool0.1 libwinpr-registry0.1 libwinpr-rpc0.1 libwinpr-sspi0.1
  libwinpr-synch0.1 libwinpr-sysinfo0.1 libwinpr-thread0.1 libwinpr-utils0.1
  libxfreerdp-client1.1 remmina-plugin-rdp
The following NEW packages will be installed
  libfreerdp1

Now, I don't understand why vlc installation would lead to removing these packages? Is there any way around this issue?

Already went through (reasonable) solutions suggested here, here, here, here, here apart from adding repositories.

Output of apt-cache policy libfreerdp-cache1.1:

libfreerdp-cache1.1:
  Installed: 1.1.0~git20140921.1.440916e+dfsg1-2ubuntu1~trusty1
  Candidate: 1.1.0~git20140921.1.440916e+dfsg1-2ubuntu1~trusty1
  Version table:
 *** 1.1.0~git20140921.1.440916e+dfsg1-2ubuntu1~trusty1 0
        500 http://ppa.launchpad.net/remmina-ppa-team/remmina-master/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

Output of apt-cache policy remmina-plugin-rdp:

remmina-plugin-rdp:
  Installed: 1.1.1-ppa1+484+201508180831~ubuntu14.04.1
  Candidate: 1.1.1-ppa1+484+201508180831~ubuntu14.04.1
  Version table:
 *** 1.1.1-ppa1+484+201508180831~ubuntu14.04.1 0
        500 http://ppa.launchpad.net/remmina-ppa-team/remmina-master/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status
     1.0.0-4ubuntu3 0
        500 http://mirror.switch.ch/ftp/mirror/ubuntu/ trusty/main amd64 Packages

I'm running up to date Raring on my Thinkpad X220 and stumbled upon weird problem.

I can connect to an external 24 inch DELL U2312HM external screen using DisplayPort cable.

I tried the same connection at work, with similar, but larger screen - 27 inch DELL U2713HM using the same cable.

When I check >>Settings >> Displays the display is detected. However I'm looking at dark screen.. Bizarrely - when I hit the PrtScr - I can also see it correctly with Ubuntu walpaper o_O

The monitor is detected and works correctly when using DisplayPort to DVI-D Adapter Cable (Single Link) however the resolution on this setup is limited to 1920 x 1200 so I'd really like to take advantage of DVI since the laptop should support it.

How could I fix this issue?

I've been using f.lux for a while and absolutely love it.

It works correctly on my laptop and also on my external screen. However, when I try to use both of them simultaneously - the magic of f.lux brightness adjustment disappears and I'm back to default settings.

Is there a way to sort it out somehow?

Whenever I hit my Print to file:

Default paper size seems to be US Letter:

Is there a way to set different default (A4 for instance) here?

Thanks!

I'm strugling to install rgdal library on Ubuntu 12.10.

Installation from within R results in error:

Error: gdal-config not found The gdal-config script distributed with GDAL could not be found. If you have not installed the GDAL libraries, you can download the source from http://www.gdal.org/ If you have installed the GDAL libraries, then make sure that gdal-config is in your path. Try typing gdal-config at a shell prompt and see if it runs. If not, use: --configure-args='--with-gdal-config=/usr/local/bin/gdal-config' with appropriate values for your installation.

ERROR: configuration failed for package ‘rgdal’ * removing ‘/home/rdk/R/x86_64-pc-linux-gnu-library/2.15/rgdal’ Warning in install.packages : installation of package ‘rgdal’ had non-zero exit status

R-sig-Geo, this two SE questions and other websites pointed me to the requirements of libgdal1-dev.

But when I tried

sudo apt-get install libgdal1-dev

I end up with another error message

Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:

The following packages have unmet dependencies: libgdal1-dev : Depends: libgdal-dev but it is not going to be installed E: Unable to correct problems, you have held broken packages.

Again - when I try to install libgdal-dev another dependencies error shows up

The following packages have unmet dependencies: libgdal-dev : Depends: libgeos-dev but it is not going to be installed Depends: libspatialite-dev but it is not going to be installed

Again trying libgeos-dev gives message:

Depends: libgeos-c1 (= 3.3.3-1.1) but 3.3.3-2~precise2 is to be installed
E: Unable to correct problems, you have held broken packages.

and libspatialite-dev:

Depends: libspatialite3 (= 3.1.0~rc2-1ubuntu1) but
3.1.0~rc2-2~precise1 is to be installed

Is there any way to tame those dependencies and have rgdal running in Ubuntu?

My sessionInfo()

R version 2.15.1 (2012-06-22) Platform: x86_64-pc-linux-gnu (64-bit)

Possible Duplicate:
Watch QuickTime videos in the browser?

Firefox asked me to install missing plugin. And presented with four choices

What are the differences between these options? Which one do you recommend?

I'm a newbie on MySQL ground so bear with me.

I've just finished upgrading 11.10 to 12.04.

Everything seemed to work without any hiccups and all my software and settings are working fine. Apart from MySQL.

When I try:

sudo start mysql

I receive an error:

start: Job failed to start

Where can I possibly diagnose what the problem is? And (hopefully) - how to sort it out?

(I disabled automatic start following advice here if that is of some importance)

Update 1:

Both outputs of:

cat /var/log/mysql.err 
cat /var/log/mysql.log

are empty.

Output of dmesg | grep mysql:

[ 1401.785141] type=1400 audit(1335619832.181:25): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=16165 comm="apparmor_parser"
[ 1401.791089] init: Failed to spawn mysql main process: unable to execute: No such file or directory

Update 2:

As indicated by AWinter below - it seemed that MySQL disappeared automagically after upgrade and had to be reinstalled.

I'm running Ubuntu 11.10 on ThinkPad X220.

Browsing through the ThinkWiki pages I stumbled upon this information:

Multiple monitors

Configuring an extended desktop over two monitors led to malfunction. Side-by-side worked, one above the other did not.

In natty the solution was just to avoid the layouts that caused the malfunction.

The problems appear to have been completely solved in Ubuntu 11.10 (Oneiric Ocelot).

Has anyone of you managed to make X220 work with a dual monitor setup? Does it require UltraBase? Any special tweaks or modifications?

I installed 11.10 ~two weeks ago and run into some strange troubles recently.

Installation was on brand new laptop with clear 160GB SSD. I opted for encrypting home directory. Apart from that I accepted defaults during the installation. There is no other OS on my laptop.

I had circa 40GB in use when (for the third time) I got to see this very unpleasant window:

Twice situation was pretty bad and whole system slowed down considerably. After reboot I could not login to graphical interface (with an error message informing about insufficient space) and had to remove some files from command line first.

Third time I still managed to quickly delete some files and it helped.

My laptop is mainly work environment: so no torrents, games, just two movies. Only media filling space are ~20GB of pictures, and bunch of pdfs. Working mostly on PostgreSQL & PostGIS, GeoServer and QGIS recently.

Although I had lots of opportunities to test and practice my backups I would be extremely grateful if somebody could point me to any potential solutions to this problem.

My laptop has been bought just before I installed Ubuntu, and it came without OS. Could that be hardware issue?

Or is the encrypted home causing me headaches?

Thanks for help!

Update 1: As suggested by @maniat1k, here is current output of fdisk -l:

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1   312581807   156290903+  ee  GPT

Update 2: As suggested by zanfur, output of df:

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda2            149802648  31411456 110781576  23% /
udev                   1959764         4   1959760   1% /dev
tmpfs                   788276       992    787284   1% /run
none                      5120         0      5120   0% /run/lock
none                   1970684      2716   1967968   1% /run/shm
/dev/sda1                19363       129     19234   1% /boot/efi
/home/rdk/.Private   149802648  31411456 110781576  23% /home/rdk

And sudo parted -l:

Model: ATA INTEL SSDSA2BW16 (scsi)
Disk /dev/sda: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
 1      17.4kB  20.0MB  20.0MB  fat16              boot
 2      20.0MB  156GB   156GB   ext4
 3      156GB   160GB   4177MB

Update 3:

Yet another window with low memory message :/

Working recently mostly on VirtualBox and using Remmina.

Following this information I deleted virtually everything from my home directory. Rebooted. There was ~20GB in use after that [~10GB for VirtualBox disk image which I wanted to keep if possible]. Following SarveshLad comment I was trying to recover more space and running Bleachbit application when I got another error of low space on HD. Then the system froze. How on earth can my Ubuntu fill up HD with over 100GB within minutes?

I installed 11.10 on my laptop choosing to encrypt home directory.

Now, when I use disk usage analyzer I get this picture:

Total fs capacity is reported correctly as 40.1GB. However inside home directory I have mysterious feature of .ecryptfs which appears to have the same size as my home directory.

What exactly does that mean?

When editing shell file in gedit, is there a way I could send current line (or selected block?) to terminal?

When learning Python I use Spyder IDE. It has an option to execute code selection or block in the console. Which I found very useful in learning what my scripts are doing step by step (or not doing ;).

Any chance to have something like that with gedit? Or any other text editor?