This morning on the way to work I got down to the road, plugged in my earphones to my phone and hit play on Spotify. Only for some horrible, tinny, quiet music to come out. It seemed that the phone just simply would not recognise that anything had been plugged in. Something that I confirmed when I got to work and confirmed with a pair of headphones and PC that it was the phone and not the earphones.
Well I'm not having this, so I tear off the back cover
Recently in the lab we've had some problems thanks to a helpful software update rendering it impossible to connect to a spectrometer. This troubleshooting provides a record of my steps to diagnosing the problem. Hopefully shortening the process in the future. The spectrometer in question is a Bruker ELEXSYS E580/E680 hybrid connected to a HP/Bruker desktop running openSUSE 12.1 x64, with Xepr v2.6b53. You will need super user privileges for almost all of these commands.
If not installed getminicom
su -
This is the second part of the lab server setup guide. Mainly for my own memory purposes, but if you find it useful then so much the better.
With a recent change of machines in the lab, I thought that I should update the backup server according to reflect the new machines. However, upon inspection the backup server OS hard drive had died long ago; but then what do you expect when you use 8 year old battered PCs as a server.
So I've had my HTC Desire now for approxmately 2 years now and whilst it has served me well I've had a bug bear with it for a long time. Essentially the phone has only 148 MB of internal storage and after the basic Android OS has been installed this is reduced to under 134 MB. Now I knew that this phone didnt have much memory when I bought it, and as a result when I bought the phone I bought it with a 16 GB microSD card.
Recently my (Ubuntu 11.10 64bit) machine stopped playing nice with PyMOL and whenever I tried to render or move an object I was facing a >40 second render time, while both of my CPU cores jumped to >90%
When I paid close attention to the startup messages in the PyMOL command window I could see:
Detected OpenGL version 2.0 or greater. Shaders available.
PyMOLShader_NewFromFile-Error: Unable to open file '/usr/lib/pymodules/python2.7/pymol/data/shaders/default.vs' PYMOL_PATH='/usr/lib/pymodules/python2.7/pymol'
This week I've been cloning machines, but each new machine has slightly different hardware, even if it's just a MAC address or serial number.
So, a quick disclaimer I'm using openSUSE 11.3 and so things will be slightly different for different versions of SUSE or different distros.
SUSE unlike some of the more user friendly OS's doesn't go out of it's way to get you online. So we need to manually tell it what to do. First open a terminal and log in as a system admin:
su
Now view the network connections:
In the last week I've had some need to setup some new PCs to control some of our machines in the lab. The problem being that the control interface between machine and PC is quite complicated and uses some pretty niche software, on the openSUSE OS (which is one of the most difficult linux OS's IMHO).
Under the new Ubuntu release (11.10 Oneiric Ocelot), trying to run MATLAB gets the following error
/opt/MATLAB/bin/util/oscheck.sh: 605: /lib64/libc.so.6: not found
MATLAB will still load, but will effectively be useless and can only be closed by killing the process. Furthermore, my previous trick of
sudo ln -s /lib64/x86_64-linux-gnu/libc-2.13.so /lib64/libc.so.6
Under the new Ubuntu 11.04 (Natty Narwhal), when you try and run MATLAB you'll get the following error
/matlab/bin/util/oscheck.sh: 605: /lib64/libc.so.6: not found
To resolve this problem, go to a terminal window (Alt + F2 from anywhere) and type
For 64 bit:
sudo ln -s /lib64/x86_64-linux-gnu/libc-2.13.so /lib64/libc.so.6
For 32 bit:
sudo ln -s /lib/i386-linux-gnu/libc-2.13.so /lib/libc.so.6
This should restore the missing library that was uninstalled during the Ubuntu update process.
This method only works for Ubuntu 11.04. For the newer release of Ubuntu 11.10 you need a slightly different fix, detailed here.
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