SCSI error on write
blchupin at iinet.net.au
Mon Mar 12 22:46:33 UTC 2012
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):
>>>> 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
>> 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.)
> I removed brasero, so it's just some artifact that it shows up in the
Ce? You removed brasero but the log still comes up with brasero even
though you are actually running gnomebake? Something not quite rught
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
> 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.)
The vulgar crowd always is taken by appearances, and the world consists
chiefly of the vulgar.
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