Subject: Re: port-xen/30977: FPU troubles
To: None <port-xen-maintainer@netbsd.org, gnats-admin@netbsd.org,>
From: Quentin Garnier <cube@cubidou.net>
List: netbsd-bugs
Date: 09/08/2005 15:02:02
The following reply was made to PR port-xen/30977; it has been noted by GNATS.

From: Quentin Garnier <cube@cubidou.net>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: port-xen/30977: FPU troubles
Date: Thu, 8 Sep 2005 17:01:21 +0200

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 On Fri, Aug 12, 2005 at 02:13:01PM +0000, cube@cubidou.net wrote:
 > >Number:         30977
 > >Category:       port-xen
 > >Synopsis:       FPU troubles
 [...]
 > >Description:
 > 	Applications that use the FPU show weird behaviour:  xpdf has
 > 	trouble displaying images (reloading a page several time shows
 > 	different results) as they get black regions on it.
 >=20
 > 	Ogg decoders such as ogg123 or any player linked to libvorbis
 > 	insert beeps and cracks in the music.
 >=20
 > 	I could prouve it is a FPU issue by listening to the difference
 > 	when using libvorbis.so (from audio/libvorbis) and
 > 	libvorbisidec.so (from audio/tremor).
 >=20
 > 	The former uses the FPU, while the latter is a fixed-point
 > 	implementation.  The former inserts beeps and cracks, sound is
 > 	just fine when using the latter.
 >=20
 > 	I also had funny results one day when tried manipulating images
 > 	with ImageMagick one day.  Black lines appeared on the result.
 [...]
 > >Fix:
 > 	Unknown.  Obviously updating Xen to 2.0.7 and NetBSD to a very
 > 	-current wasn't enough.
 
 I've updated userland & kernel to latest -current, and I still see the
 behaviour.
 
 --=20
 Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
 "When I find the controls, I'll go where I like, I'll know where I want
 to be, but maybe for now I'll stay right here on a silent sea."
 KT Tunstall, Silent Sea, Eye to the Telescope, 2004.
 
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