SCSI error on write

[Thufir Hawat]

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.  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.  

If it were a dirty lens, wouldn't it give a different sort of error, not 
SCSI?  Just thinking out loud.


-Thufir