Posts Tagged ‘Ubuntu’

Uni Oldenburg VPN with ubuntu 10.04

May 11th, 2010 5 comments

Finally got the VPN of my university working. I will share how I got it working in case you study/work here and want to use it, too.

I found the VPN to be more stable when started from a shell:
sudo apt-get install vpnc
sudo nano /etc/vpnc/default.conf

Edit the config as following:
IPSec gateway
IPSec ID student
IPSec secret student
#IKE Authmode hybrid
Xauth username YOUR
Xauth password YOUR

Then just connect to the wlan and start the vpn with sudo vpnc.

If you want to use the network-manager, you need to install another package. However, I always get an error message about invalid secrets. If you have more luck, please let me know.
sudo apt-get install network-manager-vpnc
sudo service network-manager restart

Solving Sound Problems with Dosbox in Ubuntu 8.10 and 9.04

June 27th, 2009 No comments

Hey guys, since I get a lot of hits to this article, I’d really appreciate if you leave a short note when this helped you, so we can see if this is a general configuration problem. Thanks!

Since ubuntu 8.10 I was having stuttering sound with dosbox. I just made a fresh install of 9.04 and still was experiencing such problems (pulseaudio ftw again…). I searched the web, alas was unable to find a solution that was actually working. After trying a couple of things, I finally seem to have found a solution which is working (at least for me): I set the mixing rate within dosbox to match that of pulseaudio. To make it short, change your conf in ~/.dosbox/ to

#   nosound: Enable silent mode, sound is still emulated though.
#      rate: Mixer sample rate, setting any device's rate higher than this will probably lower their sound quality.
#            Possible values: 22050, 44100, 48000, 32000, 16000, 11025, 8000, 49716.
# blocksize: Mixer block size, larger blocks might help sound stuttering but sound will also be more lagged.
#            Possible values: 2048, 4096, 8192, 1024, 512, 256.
# prebuffer: How many milliseconds of data to keep on top of the blocksize.
rate=44100      # Change this line

Also, to get rid of the initial midi warning I changed the following, though it may not be necessary:

#     mpu401: Type of MPU-401 to emulate.
#             Possible values: intelligent, uart, none.
# mididevice: Device that will receive the MIDI data from MPU-401.
#             Possible values: default, win32, alsa, oss, coreaudio, coremidi, none.
# midiconfig: Special configuration options for the device driver. This is usually the id of the device you want to use. See README for details.
midiconfig=128:0      # Change this line

Yet another pulseaudio problem solved.

Update: Also, setting output to opengl helps a lot, at least if you have compiz enabled.

Enabling Automatic Upgrades for Ubuntu

May 9th, 2009 No comments

Ubuntu allows you to install security updates automatically in the background (under Synaptic -> Repositories -> Updates), but there was only the option Install Security updates without notification, no option for just installing all updates. I searched for a way to automate it and found the solution in launchpad:

Just open /etc/apt/apt.conf.d/50unattended-upgrades and enable all updates, then you can have daily automatic upgrades without notification. No more need to confirm all the same upgrades on different computers again and again, neat!