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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