I have the same problem with my SB16ASP, version 4.11,
ISA-card, no PNP, no SMP. It locks when after a soundfile
is played and according to strace in the close-systemcall.
I investigated the same problem in kernel version 2.1.103 and
it looks like it as an interrupt problem. Or same initialisation
problem of the card (see message below, which I posted a few
weeks ago to the linux-kernel mailinglist).
/Gert
>Date: Tue, 26 May 1998 19:29:17 -0400
>To: linux-kernel@vger.rutgers.edu
>From: Gert Vervoort <gert.vervoort@wxs.nl>
>Subject: SB16 interrupt problem
>Cc: linux-sound@vger.rutgers.edu
>
>
>Hi,
>
>In 2 situations my SB16 locks the system.
>Using printk and the reset-button it looks like there is an
>interrupt problem.
>
>
>1) When I reboot my system with ctrl-alt-del, my system locks
> during the boot process, when it is probing for the SB16.
> (this does not happen, when I power-up or use the reset-button)
>
> Putting printk's in the code I discoverd the interrupt routine sbintr
> is executed continuesly at the point where the boot process stops.
> This happens in the routine setup_x86_irq in irq.c. This routine is
> called by the routine request_irq which is called at line 736 in
> sb_common.c.
>
>
>2) When playing an audio-file (cat someaudiofile.au >/dev/audio), the
> system hard locks, after the file is played.
>
> It looks like the last interrupt received in sbintr, is an uart401
> interrupt. The routine uart401intr is called and the system locks
> when in macro input_avail (on line 105 in uart401.c) the status port
> is read.
>
>
>/Gert
>
>------------------------------------------------------------------------
>System: Pentium 60 Mhz, 16M
> no SMP, no PNP
> Soundblaster 16 ASP, DSP version 4.11
> Linux kernel version 2.1.103
>
>cat /dev/sndstat
>
>OSS/Free:3.8s2++-971130
>Load type: Driver compiled into kernel
>Kernel: Linux Pentium 2.1.103 #2 Thu May 21 22:08:54 MET DST 1998 i586
>Config options: 0
>
>Installed drivers:
>Type 1: OPL-2/OPL-3 FM
>Type 26: MPU-401 (UART)
>Type 2: Sound Blaster
>Type 29: Sound Blaster PnP
>Type 7: SB MPU-401
>
>Card config:
>Sound Blaster at 0x220 irq 5 drq 1,5
>SB MPU-401 at 0x330 irq 5 drq 0
>OPL-2/OPL-3 FM at 0x388 drq 0
>
>Audio devices:
>0: Sound Blaster 16 (4.11)
>
>Synth devices:
>0: Yamaha OPL-3
>
>Midi devices:
>0: Sound Blaster 16
>
>Timers:
>0: System clock
>
>Mixers:
>0: Sound Blaster
>
>
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