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I successfully downgraded from 11.04 to 10.10. All files and settings were unaffected, but those packages installed extra with the Synaptic Package Manager and with Ubuntu Software Center, you have...

Go to: System -> Synaptic -> Administration -> Package Manager ->
search on lapack (and/or blas), and mark for installation:

libblas3gf
libblas-doc
libblas-dev

liblapack3gf
liblapack-doc...

After upgrade from ubuntu 10.10 to 11.04 (using "ubuntu classic"), I encounter something weird: Using nedit, very often if I make a selection, not all of the selection is gray. Furthermore, often...

If you have, like me, with certain DVD's for Media Player (mplayer) the message:
An error occurred - Could not read from source
and similar for VLC, Then this solves it (in the Terminal):
sudo...

I had the same. In my case the following went wrong: I had an somewhere else compiled ncview copy in my personal ~/bin/ ,but note ncview can be installed from the Synaptic Package Manager (with much...

I had exactly the same problem. Solved it by:

-> System -> Administration -> Synaptic Package Manager :
-> type in the search: blcr-dkms
-> by right mouse click on the S-column select: Mark for...

Thanks! To get this working with a shortcut (without the terminal) I had to add the -i:

Ubuntu 10.10:

System -> Preferences -> Keybord Shortcuts -> Add ->
name: grab area ...