Module snd-via82xx
------------------
Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
8233A, 8233C, 8235, 8237 (south) bridge.
mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
[VIA686A/686B only]
joystick - Enable joystick (default off) [VIA686A/686B only]
ac97_clock - AC'97 codec clock base (default 48000Hz)
dxs_support - support DXS channels,
0 = auto (default), 1 = enable, 2 = disable,
3 = 48k only, 4 = no VRA, 5 = enable any sample
rate and different sample rates on different
channels
[VIA8233/C, 8235, 8237 only]
ac97_quirk - AC'97 workaround for strange hardware
See "AC97 Quirk Option" section below.
This module supports one chip and autoprobe.
Note: on some SMP motherboards like MSI 694D the interrupts might
not be generated properly. In such a case, please try to
set the SMP (or MPS) version on BIOS to 1.1 instead of
default value 1.4. Then the interrupt number will be
assigned under 15. You might also upgrade your BIOS.
Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
channels as the first PCM. On these channels, up to 4
streams can be played at the same time, and the controller
can perform sample rate conversion with separate rates for
each channel.
As default (dxs_support = 0), 48k fixed rate is chosen
except for the known devices since the output is often
noisy except for 48k on some mother boards due to the
bug of BIOS.
Please try once dxs_support=5 and if it works on other
sample rates (e.g. 44.1kHz of mp3 playback), please let us
know the PCI subsystem vendor/device id's (output of
"lspci -nv").
If dxs_support=5 does not work, try dxs_support=4; if it
doesn't work too, try dxs_support=1. (dxs_support=1 is
usually for old motherboards. The correct implemented
board should work with 4 or 5.) If it still doesn't
work and the default setting is ok, dxs_support=3 is the
right choice. If the default setting doesn't work at all,
try dxs_support=2 to disable the DXS channels.
In any cases, please let us know the result and the
subsystem vendor/device ids. See "Links and Addresses"
below.
Note: for the MPU401 on VIA823x, use snd-mpu401 driver
additionally. The mpu_port option is for VIA686 chips only.
The power-management is supported.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1098674
Title:
[VIA8233 - VIA 8235, playback] No sound at all
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1098674/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
