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Date:      Sun, 15 Jan 2012 18:34:26 -0500
From:      "Dieter BSD" <dieterbsd@engineer.com>
To:        freebsd-hackers@freebsd.org
Subject:   Re: Sound on the system briefly interrupts when kde4 switches windows with nvidia card
Message-ID:  <20120115233438.218240@gmx.com>

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> I have kde4 on 8.2 with translucency windows effect enabled and nvidia
> graphics driver.
> Every time I switch an active window or maximize some window, sound
> played by mplayer interrupts for ~0.5 sec. Very annoying effect. Problem
> disappears when windows effects in kde4 are turned off.
> Is this likely a bug in nvidia driver that it locks up the system when a
> lot of OpenGL operations are in progress? Or what might be a problem?

Some drivers do things like DELAY(big number) while interrupts are turned
off. Very bad. Look through the source, maybe you can find it.

We REALLY need a way to service one device without shutting off
interrupts from other devices.



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