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Subjectsb driver oops in 2.4.0-test8
Didn't have this problem with 2.4.0-test2, but after upgrading from test2
to test8 the sb driver encounters this error:

Sep 12 20:49:52 wizard kernel: SB 3.01 detected OK (220)
Sep 12 20:49:52 wizard kernel: SB DSP version is just 3.01 which means
that your card is
Sep 12 20:49:52 wizard kernel: several years old (8 bit only device) or
alternatively the sound driver
Sep 12 20:49:52 wizard kernel: is incorrectly configured.
Sep 12 20:49:52 wizard kernel: sb: I/O region in use.

This is the first sign of trouble. With test2 the message about this being
an old SoundBlaster is usually followed by this:

Sep 11 23:12:28 wizard kernel: YM3812 and OPL-3 driver Copyright (C) by
Hannu Savolainen, Rob Hooft 1993-1996

Here is the rest of the oops with test8:

Sep 12 20:49:52 wizard kernel: printing eip:
Sep 12 20:49:52 wizard kernel: c681c45d
Sep 12 20:49:52 wizard kernel: Oops: 0000
Sep 12 20:49:52 wizard kernel: CPU: 0
Sep 12 20:49:52 wizard kernel: EIP: 0010:[soundcore:unregister_sound_synth
+137/884]
Sep 12 20:49:52 wizard kernel: EFLAGS: 00010286
Sep 12 20:49:52 wizard kernel: eax: c6829e00 ebx: c118ae60
ecx: 00000000 edx: 00000000
Sep 12 20:49:52 wizard kernel: esi: c5f9db40 edi: 00000000
ebp: 00000000 esp: c5bd3f08
Sep 12 20:49:52 wizard kernel: ds: 0018 es: 0018 ss: 0018
Sep 12 20:49:52 wizard kernel: Process aumix (pid: 68, stackpage=c5bd3000)
Sep 12 20:49:52 wizard kernel: Stack: 00000000 c5f9db40 c5c4bdc0 c5fa74e0
00000000 c5f9db40 c5c4bdc0 c5fa74e0
Sep 12 20:49:52 wizard kernel: 72616863 6a616d2d 312d726f c5e70034
ffffffeb c0128fb5 c5c4bdc0 c5f9db40
Sep 12 20:49:52 wizard kernel: c5f9db40 c5c4bdc0 00000000 c01282b0
c5c4bdc0 c5f9db40 00000002 0804ddb4
Sep 12 20:49:52 wizard kernel: Call Trace: [chrdev_open+65/84]
[dentry_open+192/332] [filp_open+74/84]
[sys_open+56/180] [system_call+51/64]
Sep 12 20:49:52 wizard kernel: Code: 8b 10 85 d2 74 1d 52 e8 2f 90 8f f9
83 c4 04 85 c0 74 14 8b

It seems that subsequently applications that use sound hang for a while
and then continue without sound, producing more messages like the above.

This is an ancient 8bit original Soundblaster Pro board. But as I said,
it works with test2 and earlier kernels.

Joachim

--
work: joachima@realtimeint.com (http://www.realtimeint.com)
private: joachim@kraut.bc.ca (http://www.kraut.bc.ca)

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