SCSI error on write

[Johnny]

On 03/12/2012 06:46 PM, Basil Chupin wrote:
> On 13/03/12 02:15, Thufir Hawat wrote:
>> On Tue, 13 Mar 2012 00:00:21 +1100, Basil Chupin wrote:
>>
>>> On 12/03/12 22:48, Thufir Hawat wrote:
>>>> On Mon, 12 Mar 2012 22:08:58 +1100, Basil Chupin wrote:
>>>>
>>>>>> gnomebaker output (good for one month):
>>>>>> http://pastebin.mozilla.org/1515313
>>>> [...]
>>>>> Why do you think that these are errors?
>>>> Gnomebaker says "SCSI error on write", and the resulting disc is
>>>> unreadable in either optical drive; the other info was just what I 
>>>> know
>>>> about that particular drive.
>>> My apologies - I did not not notice the screengrab in your post.
>>>
>>> I am a bit puzzled by you mentioning that you are using gnomebaker and
>>> yet the log in that screengrab is showing brasero.
>>>
>>> However, how old is this /dev/sr1? It only writes to CDs and not 
>>> DVDs as
>>> well which indicates, to me at least, that it is pretty old.
>>>
>>> Have you cleaned the laser lately (using a special CD designed for this
>>> task)?
>>>
>>> Have you tried using the slowest possible write speed (a high speed
>>> often creates coasters on some writers)?
>>>
>>> Are you using a reliable brand of CD discs?
>>>
>>> (I must admit that I have never used brasero - well, I did try it a
>>> couple of times but gave it up as a bad joke - and always use k3b which
>>> has never failed me yet.)
>>>
>>> BC
>> I removed brasero, so it's just some artifact that it shows up in the
>> log.
>
> Ce? You removed brasero but the log still comes up with brasero even 
> though you are actually running gnomebake? Something not quite rught 
> here........
>
> In any case, why did you remove brasero when it is a better product 
> than gnomebake? Look up the Wikipedia about both of them.
>
>
>>    The CD-R media is generic, and, yes, the drive is rather old.  I'm
>> going to try burning some more discs in a bit.  I'll bring down the burn
>> speed.
>>
>> I'm holding off on upgrading the drive for now.  There's no real 
>> point in
>> upgrading the drive, though, if the cables or something are wonky.
>
> I thought that it is a cable - but you can always unplug the cable and 
> plug it back in; doing so will probably slightly clean the contact 
> area between the male and female parts of the cable and break any 
> oxidation which may have occurred over time there. Doing so will also 
> ensure that the cable is sitting firmly in place.
>
> As you now confirm the burner is rather old which would also mean that 
> its UDMA is pretty slow and since you don't mention what sort of a 
> system you have it may also mean that slowing down the speed of the 
> burn may improve things as the writer may not have sufficient buffer 
> space to handle the data it is receiving to burn.
>
> What you also have not mentioned is when did this problem develop? 
> suddenly or over time? and only with certain brand of CD or with 
> certain data? Only asking as it may give you the hint that you need as 
> to why you are having this problem. (But I would start with bringing 
> back brasero and retiring gnomebake.)
>
>
>> If it were a dirty lens, wouldn't it give a different sort of error, not
>> SCSI?  Just thinking out loud.
>
> I wouldn't worry about the use of the word SCSI. As I mentioned, all 
> devices are now termed SCSI and have sdX or srX for labels. (There are 
> some applications which have default settings which use /dev/cdrom or 
> /dev/dvd in which case one has to create symlinks pointing, say, 
> /dev/dvd to /dev/sr1.)
>
> BC
>
Try K3B to burn.
Good Luck and God Bless Johnny3 65+++