Hi,
Just updated to 2.4.5 from 2.2.18 and there seems to be a difference in the OPL3-SA2
sound driver.
I have an Intel AL440LX motherboard with onboard sound, after setting up the sound
driver under 2.4.5 I get a strange effect when trying to play any sound files; the
files play very slow (like the sample rate is off), the volume is very low (the mixer
seems to take no effect) and there is lots of interference (hissing). I only get
hissing from the left speaker and the much too slow, very bassy, distorted sound from
the right speaker.
This happens when I try to play MP3s from xmms and when I cat a wav straight to
/dev/snd.
I've tried setting the card up with isapnp and the kernel ISA PNP features, both have
the same effect. Using isapnp under 2.2.18 my sound worked perfectly. I am currently
using the kernel ISA PNP features.
When the kernel loads I get:
Jun 9 16:39:22 yoshi kernel: isapnp: Scanning for PnP cards...
Jun 9 16:39:22 yoshi kernel: isapnp: Card 'OPL3-SA3 Snd System'
Jun 9 16:39:22 yoshi kernel: isapnp: 1 Plug & Play card detected total
When sound is initialised I get:
Jun 9 16:39:34 yoshi kernel: opl3sa2: Found OPL3-SA3 (YMF715 or YMF719)
Jun 9 16:39:34 yoshi kernel: <OPL3-SA3> at 0x100
Jun 9 16:39:34 yoshi kernel: <MS Sound System (CS4231)> at 0xe84 irq 5 dma 1,3
Jun 9 16:39:35 yoshi kernel: <MPU-401 0.0 Midi interface #1> at 0x300 irq 5
Jun 9 16:39:35 yoshi kernel: opl3sa2: 1 PnP card(s) found.
/proc/interrupts looks like:
5: 14783 XT-PIC MS Sound System
(rest omitted)
The values in /proc/isapnp appear to match as well (I won't dump that all here though)
as do the values in /proc/ioports (I will leave that out too unless requested later).
I am fairly sure there is no conflict there.
I had heard murmers that this driver had been through some changes and looking through
the list archives has shown that there have been some problems in 2.4.x with this
driver before; nothing seems to match my problem though.
Could anyone point me in the direction of trying to solve this problem? It doesn't
have to be a patch, I'm fairly good at looking through source, its just that I haven't
got a clue where to start. Any tips would be appreciated. Of course, if a fix
already exists please point me at it instead of going through it the hard way...!
Thanks in advance.
Robin
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