Rick Sewill wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 07/06/2010 10:38 AM, Bill Davidsen wrote:
>> Rick Sewill wrote:
>>> On 07/05/2010 10:23 PM, Rick Sewill wrote:
>> .
>>> I am wondering if OSS is enabled on your system.
>>>
>>> Please look for things related to OSS in
>>> /etc/modprobe.conf (if it exists)
>>> and /etc/modprobe.d
>>> Please make sure the line in /etc/modprobe.d/dist-oss.conf is
>>> commented out.
>>>
>>> Please do, lsmod | grep snd
>>> Please make sure there is nothing like snd-pcm-oss or snd-seq-oss
>>> installed.
>>>
>> I think you have this totally backward. There are many applications which use
>> the /dev/dsp* devices, and which will produce no sound unless they are present.
>> In fact, I think the majority of older hardware does not have support for sound
>> other than oss. As I look at my newest TV card it has stuff in /dev/dvb, while
>> the other 4-5 cards which have been happily in use do not.
>>
>> To test (as root):
>> modprobe -v snd-pcm-oss
>> {test applications for sound here}
>>
>> A lot of people have functional old hardware they can't replace, for financial
>> or technical reasons. That's why there is oss support, to support the hardware
>> which needs it.
>>
>
> This is something I didn't know. As I said, audio still confuses me.
>
> Our goal should be to help the original poster.
>
> In this regard, this new information raises a number of questions.
>
> I am hoping someone will say there is a wiki or web page that answers
> these questions (and questions I didn't think of).
>
> The questions, I hope, which might be of use to the original poster are
> as follows:
> 1) for what hardware should one use OSS as opposed to Pulse Audio.
> I did a quick internet search, but failed to find such a list.
> I am hoping others can help.
>
> This question is to help the original poster decide if they should
> switch to OSS and see if it works.
>
Since the manual load is a one time test, the modules can be removed if they
don't help, with rmmod or the handy reboot command, or any other means you like
for reboot.
> 2) How does one tell if OSS is being used?
> I assume, if I do lsmod | grep oss, I will see if the OSS modules
> are being loaded.
>
Correct. Telling if it would be used if present is harder, I just load oss and
see if things start to work.
> 3) How does one switch from Pulse Audio to OSS?
> I assume one needs to edit files in /etc/modules.d/*.conf
> or /etc/modules.conf.
I'm going out on a limb here, on systems where enabling oss helped there was no
"switch" because AFAIK the oss modules don't impact the alsa and PA
applications. I see notes that there might be an issue, I can just say that on
three system I have using OSS for old apps, nothing has ever stopped working, so
the term "switch" is probably not an issue in most cases.
> Files to be edited might include dist-oss.conf and blacklist.conf
> and others? Am I right?
>
> Are there other files one needs to edit?
> Are there any rpms one needs to install?
> Are there any rpms one needs to remove?
>
> Are there any application configuration changes one needs to make?
> I assume applications can be configured to use the OSS api, as well
> as the ALSA api and/or Pulse Audio API.
>
> 4) How does one switch from OSS back to Pulse Audio?
> Is the answer to this the inverse of the answer to question 3?
> I.e., edit files /etc/modules.d/*.conf or /etc/modules.conf
> Install certain rpms?
> Remove certain rpms?
>
See above, to get OSS I uncomment the load in modprobe.d, I never touched
anything else, and I have used OSS fairly heavily rather than change software.
> 5) is there a web page that describes the tools one uses when using OSS?
> Are these the tools: http://www.opensound.com/ossapps.html#mixer
>
I have seen no indication that you need such things, or maybe it's because I
load a bunch of mixers, advanced and stupid, and just try one after the other
until I find the one with the right slider (there are usually three useful at most).
Unless you hit problems, regard this as a switch, turn it on and see if you need
tools or techniques, or if it even helps. Don't oversolve the problem.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
--
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
