Posts Tagged 'ubuntu'

off topic: Can’t ssh into a Ubuntu 12.04 box

After a fresh install of Ubuntu 12.04 followed by an install of the ssh-meta package (which includes the ssh server and client) as well as firestarter (to allow ssh access through the firewall) I wasn’t able to login from a remote machine. Worse: firestarter didn’t show a denied ssh-access, which I expected after a fresh install. Fooling around with /etc/sshd_config didn’t change a thing. Until I stumbled about a piece of information on the internet, that open my eyes.
Starting up firestarter it displayed a message saying “Failed to open the system log. No event information will be available” and “Error reading system log (null), file does not exist.”. At first I ignored them and thought, oh well, I don’t care. But I do, ’cause that is the reason for not displaying the deny-message which I needed to allow access. Another search revealed the solution:

From Ubuntu 11.04 on rsylogd is installed rather than syslogd which firestarter was expecting. I edited /etc/rsyslog.d/50-default.conf by changing the lines commented out that create the relevant logfile

#*.=info;*.=notice;*.=warn;\
    # auth,authpriv.none;\
    # cron,daemon.none;\
    # mail,news.none -/var/log/messages

to

*.=info;*.=notice;*.=warn;\
    auth,authpriv.none;\
    cron,daemon.none;\
    mail,news.none -/var/log/messages

Then restarting rsyslog with sudo service rsyslog restart and restarting firestarter the problem disappears.

(the last bit I found on askubuntu)

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m-audio transit on Ubuntu 12.04

I freshly installed Ubuntu 12.04 and the ubuntustudio meta package. To get the m-audio transit card working I followed my older post (m-audio transit and ubuntu linux), i.e. installing madfuload which comes in the repository and adjust the udev-rules. They do not work the way they come installed.

So I used the content from corrected-madfu-rules and saved it as /etc/udev/rules.d/41-madfuload.rules. The according file in /lib/udev/rules.d I left untouched. The “41” instead of “42” is there because it reads “…Pick a number higher than the rules you want to override, and yours will be used. …” in /etc/udev/rules.d/README.

Something hang on my machine when trying the outcome so I rebooted the machine, although this might not be necessary for everybody. After that the sound card works as it used to.

update on smasher

After my euphoria from installing smasher without any problems I had some time to try out this very nice audio toy. It comes with some help, although it won’t explain everything. However, one easiely recognizes what is going on. What I didn’t realize before installing it was that smasher is not (hopefully yet) designed for live usage. So one can not synchronize playback with other programs (at least I didn’t know how to) and I couldn’t change slicing during playback. When smasher choked on something one cannot reconnect to the jack server. Alltogether it’s a very nice piece of software. One can prepare great loops with nice effects and save them to a wav. Thank you developers.

I have to add another note to my former post. When I installed it on my second machine, running as well on Ubuntu 8.04, it didn’t want to work straight away. On startup smasher  said:

smasher: /usr/lib/libwx_gtk2u_aui-2.8.so.0: \
        version `WXU_2.8.9' not found (required by smasher)

It turned out that some updates from this library are not included in Ubuntu. Adding apt.wxwidgets.org to the package sources list (see) lets you update to the needed version from the wxwidget developers page.

Smasher, an open source beat-slicer

For a time now I was looking for an open source beat-slicer. I came across Smasher reading Dave Phillips’ latest article on linuxjournal.com, always a good read by the way. As he does a review on it in his article and I just installed it ten minutes ago, I will not bother you by another review.

As he points out, Smasher needs a variety of libraries to be built. Trying to compile it, I bumped into an error in wrapsound.cpp a few times, until I realized that from the same sourceforge page one can download a package smasher-1.1.6-ubuntu_i386.deb. It worked without problems for me on Ubuntu 8.04.

Then I started up Smasher and to my full delight it played the example file back as well straight to alsa as through a jack-server. So I’m quite excited about trying it out…

snapshot from smasher.sourceforge.net

snapshot from smasher.sourceforge.net

jack-rack open/save dialog hangs

It seems that the binary packages of jack-rack (an effect rack for jack) of some (ubuntu) distributions are compiled without a certain library. If this is the case one can not save or load the jack-rack presets, a rather annoying feature. In the discussions of ubuntu bugs site launchpad I found the solution. It says: “In order for this thing to work, Jack Rack has to be compiled with libgnomeui-dev installed in the system. …”

m-audio axiom 25 and linux

This is a short message  informing that I plugged a M-Audio Axiom 25 MIDI controller into the USB port and it was recognised immediately. Sooperlooper, Specimen, JackRack, Hydrogen… perfect. I didn’t yet figure out how the transport buttons work.  The manual is telling me weird stuff…

(as of Ubuntu 8.04, 2.6.24-23-rt)

Photo of the M-Audio Axiom 25 MIDI controller.

Photo of the M-Audio Axiom 25 MIDI controller.

compiling sooperlooper

I recently downloaded the newest sources of sooperlooper (1.6.13). Ubuntu 8.04 comes with a version from 2005 (1.0.8), which actually surprised me a bit. Compiling the sources is not a big deal, but ubuntu users will not find one of the packages from the build requirements in the standard repositories: Rubberband.

To compile rubberband you will need another package, fftw-3. This, in turn, requires vamp-sdk. Downloading and compiling from bottom to top you should be able to compile sooperlooper, all other packages (and their package-dev counterparts!) are found in the repositories.