sumofungus

mainly linux, some windows…

Unlock greyed out in Ubuntu when using nx(nomachine)

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I was trying to use the “services-admin” application over a nxserver (nomachine) connection and the Unlock button was greyed out. This was the same for the “Users and Groups” button as well.
Solution was to run “polkit-gnome-authorization” and select org->freedesktop->systemtoolsbackends … and setting “Anyone” and “Console” to “Admin Authentication”.

Issue logged here;

https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/221363

https://bugs.launchpad.net/ubuntu/+source/policykit-gnome/+bug/231246

Written by sumofungus

December 12, 2009 at 12:00 AM

Posted in Uncategorized

ITV3 and ITV4 didnt work on mythTV

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I only recently noticed that ITV3 and 4 were not working following the national retune earlier in the year. turns out that there were duplicate entries in the channels table. The listings were still being shown when scheduling programs, but the Program Guide always showed as “Unknown”.

i stuck a suffix on the channel name field in the database using mysql-query-analyser so that I could identify them in backend setup. I then used backend setup to delete them.

Written by sumofungus

December 4, 2009 at 10:11 PM

Posted in Uncategorized

dont bother with cheap RAID cards (in Win XP)

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After loosing data a couple of times a few years back i decided that I would keep everything on RAID1 (mirrored) discs.

the options that i had (under Windows) were either;

  1. Use Microsoft Dynamic disks.
  2. Buy a cheap RAID card.

Option 1 looked like it would only work if I had Win Server, so I went for option 2.

Now I have found that the RAID set is constantly being rebuilt and the system has become slower and less reliable.

A safer (because that is what you really want) option is to do some straight-forward copying. I got hold of MS SyncToy 2.1 and set it up as a scheduled task – problem solved…

Written by sumofungus

December 4, 2009 at 10:02 PM

Posted in Uncategorized

recording audio playing through speakers

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wanted to record flash audio playing in a web browser.

Go into the terminal and type:
sudo apt-get install pavucontrol
then when that’s finished type:
pavucontrol
then start your audio and in another terminal type:
arecord -c 2 -f cd test
(http://ubuntuforums.org/showpost.php?p=7995218&postcount=33

note that the pavucontrol (PulseAudio Volume Control) did not need to be running while recording (or loaded before or anything), but I did have to change the default Input Device from “Internal Audio Analog Stereo” to “Monitor of Internal Audio Analog Stereo”.

Written by sumofungus

November 16, 2009 at 7:45 AM

Posted in computers, linux

upgrade to ubuntu karmic koala (9.10) and still connect to a mythtv 0.21 backend.

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Having upgraded my laptop to Ubuntu 9.10 to get the Intel graphics card working with Flash I found that mythtv in the karmic libraries was at 0.22 (got the usual schema error). This stopped it from connecting to my mythbackend server that is still running at 0.21.

Rather than upgrade all other (happily working) machines on my network to karmic I took the following steps;

1. Removed all mythtv packages.
2. Added the Jaunty repos back in;

deb http://gb.archive.ubuntu.com/ubuntu/ jaunty main universe restricted multiverse
(taken from http://ubuntuforums.org/showthread.php?t=1157181)

3. Installed mythlib-0.21-0 & mythcommon 0.21 (adding these separatly helped avoid some dep issues).
4. Installed and locked the version of mythfrontend at v0.21+fixes19961-0ubuntu8 (jaunty).

I would be interested if anyone has problems getting this working as I have a few other machines to do this on eventually.

Written by sumofungus

November 15, 2009 at 12:32 PM

Posted in computers, linux, mythtv

transcoding mpeg video to mp3 in ubuntu jaunty using VLC

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wanted to convert some audio-only recordings (made by mythtv) from mpg files into mp3’s.

got an error in vlc reporting that the libavcodec would not support it.

needed to select “libavcodec-unstripped-52” package from synaptic and this got things working.

Written by sumofungus

July 22, 2009 at 11:09 PM

Posted in Uncategorized

when wanting to explore a disc image, th…

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when wanting to explore a disc image, the following post is useful;

http://ubuntuforums.org/showthread.php?t=711773

 

Written by sumofungus

April 29, 2009 at 12:39 AM

Posted in Uncategorized