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	microkernel/mach/external_pager_mechanism.mdwn

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diff --git a/community/gsoc/project_ideas/sound.mdwn b/community/gsoc/project_ideas/sound.mdwn
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+[[!meta copyright="Copyright © 2008, 2009 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
+is included in the section entitled
+[[GNU Free Documentation License|/fdl]]."]]"""]]
+
+[[!meta title="Sound Support"]]
+
+The Hurd presently has no sound support.  Fixing this, [[!GNU_Savannah_task
+5485]], requires two steps: the first is to port some other kernel's drivers to
+[[GNU_Mach|microkernel/mach/gnumach]] so we can get access to actual sound
+hardware.  The second is to implement a userspace server ([[hurd/translator]]),
+that implements an interface on top of the kernel device that can be used by
+applications -- probably OSS or maybe ALSA.
+
+Completing this task requires porting at least one driver (e.g. from Linux) for
+a popular piece of sound hardware, and the basic userspace server. For the
+driver part, previous experience with programming kernel drivers is strongly
+advisable. The userspace part requires some knowledge about programming Hurd
+translators, but shouldn't be too hard.
+
+Once the basic support is working, it's up to the student to use the remaining
+time for porting more drivers, or implementing a more sophisticated userspace
+infrastructure. The latter requires good understanding of the Hurd philosophy,
+to come up with an appropriate design.
+
+Another option would be to evaluate whether a driver that is completely running
+in user-space is feasible.  <!-- TODO.  Elaborate.  -->
+
+Possible mentors: Samuel Thibault (youpi)
+
+Exercise: This project requires kernel (driver framework) hacking as well as
+some Hurd server hacking; so the exercise should involve either of these, or
+even both. You could for example port some newer driver to run in the existing
+framework (see the [[device_driver|driver_glue_code]] project description), or
+try to make some fix(es) to the [unfinished random device
+implementation](http://savannah.gnu.org/patch/?6088) created by Michael
+Casadevall.