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- Advanced Linux Sound Architecture - Driver
- ==========================================
- FAQ - Frequently Asked Questions
-
- Q: My card is not detected at all and is ISA based - non Plug & Play.
- Can I try something?
- A: If you have compiled driver with the ISA PnP support, you must force
- the detection of non-PnP version of your card with some drivers (use
- snd_isapnp=0 parameter - check the INSTALL file). This problem may
- occur mostly in portable computers where vendors suppressed the ISA PnP
- extension of sound chips.
-
- Q: When I play something and I try to play something other the second attempt
- will not fail but instead it hangs waiting for the completion of the first
- sound.
- A: This is definitely the standard behaviour as described in many official
- documents that now ALSA follows. There is no reasons to complain about that
- for the following reasons:
- - it's the right (standard) way
- - the application that want a different behaviour can open the device in
- O_NONBLOCK mode
- - all modern OSS drivers in mainstream kernel (cmpci, es1370, es1371,
- esssolo1, maestro, sonicvibes, vwsnd) works in the same ways and the
- others have to be intended buggy
- - we want you ask to broken applications author to fix them ;-)
-
- Q: The driver is installed and successfully loaded in the runtime kernel,
- but it does not produce any sound. What's wrong?
- A: You should raise the volume for mixer channels and/or unmute mixer channels.
- Look for the alsa-utils package at http://www.alsa-project.org. There are
- native mixers.
-
- Q: How can I store and restore mixer settings?
- A: Use the native alsactl program (strongly preferred) or an another ALSA mixer
- program.
-
- Q: The driver is loaded, but OSS programs say: Can't open /dev/mixer.
- What is wrong?
- A: The OSS compatible mixer emulation comes as an add-on module which is not
- loaded by default. If you have got modified /etc/conf.module as suggested
- in the INSTALL file, it should be loaded with kerneld or kmod. Check it -
- if this method for some reason doesn't work - you need to insert
- the 'snd-mixer-oss' module manually.
-
- Q: The driver is loaded, but OSS programs say: Can't open /dev/dsp.
- What is wrong?
- A: The OSS compatible PCM (digital audio) emulation comes as an add-on module
- which is not loaded by default. If you have got modified /etc/conf.module
- as suggested in the INSTALL file, it should be loaded with kerneld or kmod.
- Check it - if this method for some reason doesn't work - you need to insert
- the 'snd-pcm-oss' module manually.
-
- Q: Can I specify which DMA channel will be used for a specific direction with
- Sound Blaster 16/AWE soundcards?
- A: Yes, you may change the default settings (which is auto) through alsactl
- utility. Look for "DMA 16-bit" switch in the alsactl.conf file.
-
- Q: Noises in X-win?
- A: Try comment out line in your XF86Config file:
- #Option "pci_retry" # faster, but problematic for ISA/PCI soundcards
- More information: http://www.xfree86.org/3.3.3.1/S39.html
-