[ltp] DVD not working
Jon Escombe
linux-thinkpad@linux-thinkpad.org
Sat, 20 Jan 2007 11:39:48 +0000
Richard Neill wrote:
>
>>> However, media rated for 32x can still be written (at lower speed)
>>> with a 4x drive? Are you saying that there exists any combination of
>>> CD-RW drive media which cannot burn at all, not even at 1x speed?
>>
>> Absolutely. If you have an old CD-RW that only writes at 4x, and
>> newer CD-RW media that supports 8x writing speed, try to write the
>> newer media in the older drive. It'll fail miserably, and cdrecord
>> should give you appropriate error messages in that case. I've had
>> this happen to me at least once. This is because faster CD-RW media
>> require different combinations of speed and laser power from the drive
>> and laser than slower media. (Strange, no good tech data on
>> PickyWeedia for this particular bit.)
>
> Now, that is most interesting. I thought that the worst-case was a
> fallback to 1x speed. Is this also true for CD-R media, or is it only
> CD-RW that is this picky?
>
>
> Richard
I think this is just a CD-RW bug in certain versions of cdrecord (the
default version in FC5 has this problem). Compiling from current sources
it's ok, and there's a patch for older versions on the debian bug list -
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=334677
Regards,
Jon.