Re: sound not working


Bob Tennent wrote:
> I'm getting these system messages on boot:
>
> via82xx: Assuming DXS channels with 48k fixed sample rate.
> Please try dxs_support=5 option
> and report if it works on your machine.
> For more details, read ALSA-Configuration.txt.
[snip]

just a guess;
is this a VIA8237 SouthBridge Chipset ?
Any particular reason "48k" instead of 44k ?
Have you recently swapped your PCI cards around?

ALSA-Configuration.txt

Module snd-via82xx
1083 ------------------
1084
1085 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1086 8233A, 8233C, 8235 (south) bridge.
1087
1088 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS
setup
1089 [VIA686A/686B only]
1090 joystick - Enable joystick (default off) [VIA686A/686B
only]
1091 ac97_clock - AC'97 codec clock base (default 48000Hz)
1092 dxs_support - support DXS channels,
1093 0 = auto (defalut), 1 = enable, 2 = disable,
1094 3 = 48k only, 4 = no VRA
1095 [VIA8233/C,8235 only]
1096 ac97_quirk - AC'97 workaround for strange hardware
1097 See the description of intel8x0 module for
details.
1098
1099 Module supports autoprobe and multiple bus-master chips (max
8).
1100
1101 Note: on some SMP motherboards like MSI 694D the interrupts
might
1102 not be generated properly. In such a case, please try
to
1103 set the SMP (or MPS) version on BIOS to 1.1 instead of
1104 default value 1.4. Then the interrupt number will be
1105 assigned under 15. You might also upgrade your BIOS.
1106
1107 Note: VIA8233/5 (not VIA8233A) can support DXS (direct sound)
1108 channels as the first PCM. On these channels, up to 4
1109 streams can be played at the same time.
1110 As default (dxs_support = 0), 48k fixed rate is chosen
1111 except for the known devices since the output is often
1112 noisy except for 48k on some mother boards due to the
1113 bug of BIOS.
1114 Please try once dxs_support=1 and if it works on other
1115 sample rates (e.g. 44.1kHz of mp3 playback), please let
us
1116 know the PCI subsystem vendor/device id's (output of
1117 "lspci -nv").
1118 If it doesn't work, try dxs_support=4. If it still
doesn't
1119 work and the default setting is ok, dxs_support=3 is the
1120 right choice. If the default setting doesn't work at
all,
1121 try dxs_support=2 to disable the DXS channels.
1122 In any cases, please let us know the result and the
1123 subsystem vendor/device ids.
1124
1125 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1126 additonally. The mpu_port option is for VIA686 chips
only.

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