No Sound KDE

Frank frank at
Thu Oct 16 08:05:13 BST 2003

Thank you Lauri.

Now that is something that makes heaps of sense to a stubborn oldie such 
as myself.

Thank you very much for your effort and my thanks again to those afore you.

So out with the hardware and magnifying glass. I shall go looking and 
report back.

On other thing to resolve still though. I do not get my start up sound 
anymore (KDE) since I needed to reboot my system once with the emergency 
floppy. I now understand that that comes from the hard drive so where do 
I need to check to sort that one out.



Big or small, a challenge requires the same commitment to resolve.
Registered Linux User # 324213

Lauri Watts wrote:

>On Wednesday 15 October 2003 12.56, Frank wrote:
>>Thanks again Scott, I do appreciate you guys making sure I fully
>>That the 'cables' have come loose since the "ram dump" might be a 
>>But when I can read data CDs and burn data CDs [ I use cdrecord from the 
>>konsole for that ] then I doubt there are any physical problems going 
>>on. Yes I have tested these CDs as they are ISO's for other OSs that can 
>>be run from CDs, and they run very well as well. Now, they do not run 
>>from the hard drive. {eg. Knoppix3.2 ]
>CD-Rom drives have a data cable (the wide flat grey one generally, or maybe a 
>fat round coloured one) to the motherboard, over which data is transferred.  
>They also contain internal hardware and firmware that allow them to play 
>audio discs. Audio CD discs and Data CD-Rom discs conform to entirely 
>different standards, and are handled very differently by different hardware, 
>that just happens to be wrapped up in the same drive.
>Traditionally, Audio CD requires no data transfer, and does not use the data 
>cable, your CPU, or anything else in your computer.  What it do is hijack 
>your soundcard's outputs, and the mixer, via a second small grey wire that 
>goes directly from your CD-Rom drive to your soundcard. 
>This is why CD Drives have controls on the front, and why those controls do 
>anything at all, because all you need is for the machine to be powered on,  
>because the drive itself plays the audio CD.
>Here's where it gets muddy: Recently (in the last ~2 or 3 years at most) 
>CD-Rom manufacturers have been saving money by leaving  out this built-in 
>capability, or in very many cases, by still providing the capability in the 
>drive but by not bothering with cabling the drive to the sound card directly.  
>Coincidentally (or not) recent versions (of similar vintage) of Windows Media 
>Player play CD's by digital extraction *over the data cable*, incidentally 
>permitting copy protection schemes and other shiny happy things to be put in 
>place.  In effect, whenever you listen to an audio cd with WMP, it is ripping 
>it on the fly and playing the resulting data.
>So to summarise, the ability to play audio cd's in windows, and to play data 
>cd's in any OS, or being able to rip audio cd's (which is data extraction), 
>really has little to do with the ability of non-Windows OS to play Audio CD's 
>directly.  If you can do all the above but *not* play audio cd's, it's 
>extremely likely that what you're missing is tiny cable that runs from the 
>back of your hard drive to your sound card, and nothing more.
>All of this is very confusing however, because, you initially mentioned sound, 
>and then switched to talking about ISO's of other OS'es.  Which, of course, 
>are perfectly ordinary data cd's and have nothing to do with sound at all.

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