[racket] drracket does not work in Ubuntu 12.04 Beta 2

Run this command

$ sudo apt-get install libjpeg62

On 04/09/2012 04:36 PM, Jackson Lawler wrote:
> I was using DrRacket for a class using PLAI on Ubuntu 11.10 with some issues before the complete failure in 12.04 Beta 2.
> It was very slow when it came to scrolling with my trackpoint, but moving aroung with the keyboard only or with an external mouse with a wheel moved slowly, but didn't freeze DrRacket for many seconds and then move a whole lot like it did with the trackpoint.  I'm not sure if that was some kind a precursor to the trouble I am having now.  I believe some of that problem came about because of Ubuntu's new Unity interface.
>
> When I installed changed to the 12.04 Beta 2 of Ubuntu, I tried to install the DrRacket version available in the Ubuntu Software Center that was working on 11.10.  It installed, but then would not run.  I then tried toi install the follwing versions from the website: debian_squeeze x86_64, fedora 14 x86_64, ubuntu karmic i386.  Those did not work either.  Finally, I resorted to compiling the Unix source myself, which also failed.
>
> I don't know if you all can help me with this or if this is something I need to contact Canonical about, but any suggestions are very welcome.
>
> I know this might be because I am using a Beta version, but since the full version comes out in 18 days I had hoped that it would still be fairly stable.  For the most part, it is quite stable.
> I would have waited until the final release came out before emailing you all about this, but since I need it for class, I decided to send this now.
>
> The error would occur whenever I tried to run drracket in the terminal.
> After every installation (I did uninstall the each previous attempt before trying again with a different version) I would do this:
>
> jack at jack-ThinkPad-W520:~$ drracket
>
> The result was always:
>
> ffi-lib: couldn't open "libjpeg.so.62" (libjpeg.so.62: cannot open shared object file: No such file or directory)
>
>  === context ===
> /usr/lib/racket/collects/racket/draw/unsafe/jpeg.rkt: [running body]
> /usr/lib/racket/collects/racket/draw/private/bitmap.rkt: [traversing imports]
> /usr/lib/racket/collects/racket/draw/private/dc.rkt: [traversing imports]
> /usr/lib/racket/collects/racket/draw/private/svg-dc.rkt: [traversing imports]
> /usr/lib/racket/collects/racket/draw.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/private/kernel.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/private/const.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/private/check.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/private/mred.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/mred.rkt: [traversing imports]
> /usr/lib/racket/collects/mred/main.rkt: [traversing imports]
> /usr/lib/racket/collects/racket/gui/base.rkt: [traversing imports]
> /usr/lib/racket/collects/drracket/drracket.rkt: [traversing imports]
>
> How can I fix this?
>
> Running 'racket" from the terminal works just fine, so I know the installation was at least partially successful.
> I can use another editor (GVim, nano, Vi, Emacs) or the like, but right now, I really don't want to learn a new editor in the midst of a class.
>
> I do not, in any manner, intend to accuse anyone of anything in this e-mail; I just need help.
>
> Any and all help, again, would be greatly appreciated.
>
>
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