[racket] DrScheme hangs under Ubuntu 11.04?

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Mon Apr 11 16:33:33 EDT 2011

Please cc me as well with that stacktrace. (there is some non-trivial
deadlock potential at that point in drracket's startup).


On Monday, April 11, 2011, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> Thanks for the report! Unfortunately, I haven't been able to replicate
> the problem in a 32-bit Ubuntu 11.04 beta 1 installation.
> Can you try running `drracket' in a Terminal window, and when DrRacket
> gets stuck, hit Ctl-C in in the Terminal window? That should generate a
> stack trace that you could report back to the list (or just me). It
> might not be enough information, but it's worth a try.
> Thanks,
> Matthew
> At Sat, 09 Apr 2011 22:39:09 -0700, Hyungrok Kim wrote:
>> Hi all,
>> I've been having some trouble running DrRacket under Ubuntu Unity, the
>> new default interface in the upcoming Ubuntu 11.04 'Natty'.
>> Specifically, the splash screen with the lambda icon appears, but when
>> the IDE window itself opens the entire system hangs.
>> I installed the 'racket' package from the ppa:plt/racket PPA (private
>> package archive, the official way to install unofficial programmes in
>> Ubuntu). It runs fine under Ubuntu with vanilla GNOME and GNOME plus
>> Compiz (a 3-D compositor) with default settings, but it doesn't run
>> under Unity. This is strange, since internally Unity is implemented as a
>> set of Compiz plugins.
>> Ubuntu 11.04 introduces a few other UI changes besides Unity, such as a
>> Mac-like global menu bar and a new scroll-bar widget. I've tried
>> disabling both, to no avail. I don't think I have any particular unusual
>> configurations; it should be reproducible with a default Ubuntu 11.04
>> beta 1 install.
>> I don't know how to make it print out diagnostic info; I would
>> appreciate instructions as to how. I haven't tried compiling from
>> source; I can try if people think it'd be helpful.
>> Ubuntu 11.04 is the current development version, currently in beta
>> stage. It will be released in April 2011 (hence the version number
>> 11.04).
>> Thanks in advance.
>> --
>> Hyungrok Kim
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