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Date:      Mon, 17 Sep 2001 22:55:36 +0800
From:      Eugene Grosbein <eugen@svzserv.kemerovo.su>
To:        freebsd-multimedia@freebsd.org
Cc:        freebsd-stable@freebsd.org, freebsd-ports@freebsd.FreeBSD.ORG, .org@svzserv.kemerovo.su
Subject:   [SOLVED] Broken sound with 4.4-RC
Message-ID:  <3BA60EE8.EDDF0E5C@svzserv.kemerovo.su>

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> I was running old 4.3-STABLE and sound worked fine.
> After updating to 4.4-RC via cvsup (past 4.4RC4-STATE)
> audo playback suffers of frequent breakages: instead of music
> I hear metallic jar within less then a second. Then music
> continues, then another jar etc. Very annoying.
> I use pcm driver.

I found the source of this jar.
I'he installed 'gkrellm' from ports.
It's installed as root:kmem with SUID bit (no SGID, however).
Running gkrellm while audio playback produces sound breakage.
The solution is removing SUID bit from gkrellm binary.
All metallic effects have disappeared now.

Eugene Grosbein

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