I've got a ESS1879 as well. Try the following patch, Cameron sent me.
Index: sb.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/sound/isa/sb.c,v
retrieving revision 1.41
diff -u -r1.41 sb.c
--- sb.c 1999/12/19 22:25:26 1.41
+++ sb.c 1999/12/21 09:03:02
@@ -978,7 +978,9 @@
mix_setdevs(m, SBPRO_MIXER_DEVICES);
mix_setrecdevs(m, SBPRO_RECORDING_DEVICES);
sb_setmixer(sb, 0, 1); /* reset mixer */
+#if 0
sb_setmixer(sb, MIC_VOL, 0x6); /* mic volume max */
+#endif
sb_setmixer(sb, RECORD_SRC, 0x0); /* mic source */
sb_setmixer(sb, FM_VOL, 0x0); /* no midi */
break;
On Mon, 20 Dec 1999, Eric Lakin wrote:
> It appears that the microphone controls for newpcm are not functioning, at
> least for my sound device. I've got a Vaio 505TX laptop. On probing the sound
> device, the speaker and mic together cause terrible feedback. mixer shows 0:0
> for the mic, and adjusting this or using 'mixer -rec mic' has no effect.
> Otherwise, sound seems to work OK (tested w/ mpg123)
>
> With source from last night, I've got the following in my kernel config:
>
> options PNPBIOS
> device pcm0
> device sbc0
>
> which gives the following output on boot:
>
> unknown0: <PNP0c02> at port
>0x4d0-0x4d1,0x80,0x72-0x73,0x370-0x371,0xb2-0xb3,0x8000-0x804f,0x2180-0x218f,0x230-0x233
> iomem 0xfffe0000-0xffffffff on isa0
> unknown1: <PNP0c01> at iomem 0-0x9ffff,0xe8000-0xfffff,0x100000-0x7ffffff on isa0
> unknown2: <PNP0200> at port 0-0xf,0x81-0x8f,0xc0-0xdf drq 4 on isa0
> unknown: <PNP0000> can't assign resources
> unknown3: <PNP0100> at port 0x40-0x43 irq 0 on isa0
> unknown4: <PNP0b00> at port 0x70-0x71 irq 8 on isa0
> unknown: <PNP0303> can't assign resources
> unknown5: <PNP0c04> at port 0xf0-0xff irq 13 on isa0
> unknown: <PNP0800> can't assign resources
> unknown6: <PNP0a03> at port 0xcf8-0xcff on isa0
> sbc0: <ESS ES1879> at port 0x220-0x22f,0x388-0x38b,0x320-0x321 irq 5 drq 1,5 on isa0
> pcm0: <SB DSP 3.01 (ESS mode)> on sbc0
> unknown7: <PNP0e03> at port 0x3e0-0x3e1 on isa0
> unknown: <PNP0700> can't assign resources
> unknown: <PNP0401> can't assign resources
> unknown: <PNP0501> can't assign resources
> unknown: <PNP0510> can't assign resources
> unknown: <ROK0010> can't assign resources
> unknown: <PNP0f13> can't assign resources
> unknown8: <ESS0009> at port 0x800-0x807 on isa0
>
> I've also tried removing the PNPBIOS option, and using
>
> device pcm0
> device sbc0 at isa? port 0x220 irq 5 drq 1 flags 0x15
>
> This produces different boot mesages, but the same behavior re. the mic.
>
> sbc0: <ESS 688> at port 0x220-0x22f irq 5 drq 1 flags 0x15 on isa0
> pcm0: <SB DSP 3.01 (ESS mode)> on sbc0
>
>
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