Re: dvd burner can't read cds
2010/2/11 Stephen Powell <zlinuxman@wowway.com>:
> On Thu, 11 Feb 2010 11:04:30 -0500 (EST), Leonardo Canducci wrote:
>> The SATA dvd burner in my desktop doesn't have any analog output so
>> cdplay (or cdcd) does not work (disk is spinning and led is blinking
>> but no audio).
>
> How sad. Apparently, the drive *does* support the play command,
> but if there's no place to plug in an audio cable, there's no
> way to get sound out of it. And if there's no headphone jack either,
> then the analog play function is basically useless. :-(
> It reminds me of a quote by my high school chemistry teacher:
> "An engineer that can't write reports is like a cow without teats".
>
> cdinfo -v
>
> and
>
> cdir
>
> will also give you a status of what the hardware is doing.
> (i.e. whether the device is playing or not, what track is
> playing, how many minutes have elapsed on the track, etc.
>
> ....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
>> In windows (2k and xp at least) you can set the device to handle audio
>> in digital.
>> Media player uses digital audio anyway.
>
> OK.
>
>> Stephen Powell wrote:
>>> Here's one way to be sure. Play a CD in Windows. While
>>> the CD is playing, unplug the audio cable, either at the
>>> drive end or the sound card end. If sound suddenly
>>> disappears, the media player is using the analog method.
>>> If you continue to hear sound, it's using the digital method.
>>
>> There's an easier way: change CD volume volume from audio mixer. When
>> using digital it has no effect (PCM would do).
>
> True. And it's easier to implement for computers where it's
> difficult to access the hardware while the machine is running,
> such as in a laptop. But unplugging the cable is very effective
> at convincing people!
>
>> Stephen Powell wrote:
>>> If you can get the analog method to work under Windows, then
>>> chances are that cdplay was not talking to the correct drive
>>> under Linux. Either that or the drive uses some type of
>>> non-standard command set that the Windows media player
>>> understands but cdplay, which follows the industry standard
>>> command set, does not.
>>
>> It's more complex than that: I tested the unit on a different win xp
>> pc this morning and everything worked fine (analog included).
>
> Uhh ... OK, now I'm confused. You just said that the drive does not
> have any analog audio output. So it can't work in analog mode in
> *any* PC, right? But you just said you got it to work in analog
> mode in another PC! How is that possible? Are we talking about
> two different DVD drives? Are you sure that win xp was using
> analog mode?
I was referring to my desktop SATA burner before to explain how dvd
modern drives behave. Here I'm talking about the IDE drive
troubleshooting.
>
>> Same
>> with ubuntu karmic and slitaz started from a USB stick. On its pc
>> instead the drive reads cds in digital only with win2k and it doesn't
>> read them at all in linux (cdplay, cdcd, rhythmbox, ecc.) while
>> working fine with data cdrom and dvd. It must be some strange wicked
>> of motherboard, drive and lenny.
>
> Now I'm even more confused. I don't remember whether my Debian box
> uses totem or rhythmbox, but I'm pretty sure that whatever is the
> default media player uses the digital playback method.
cdcd and cdplay use analog audio
--
Leonardo Canducci
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