Re: Lenny does not recognise blank CD; Etch does.
On Sun, 2009-06-21 at 12:18 +0200, Frank Lin PIAT wrote:
> On Sun, 2009-06-21 at 21:35 +1200, Bruce Ward wrote:
> > On Sat, 2009-06-20 at 16:35 +0200, Frank Lin PIAT wrote:
> > > On Sat, 2009-06-20 at 20:21 +1200, Bruce Ward wrote:
> > > > I have a machine with a dvd writer (/dev/hdc) and a cd writer
> > > > (/dev/hdd).
> > >
> > > > under Lenny, the CD writer will not recognise a blank CD. Nothing. The
> > > > DVD writer will recognise one.
> > >
> > > > Any ideas?
> > >
> > > Humm... you might want to check how HAL detects that devices. There are
> > > some GUIs, but you can send a report with:
> > >
> > > hal-find-by-capability --capability storage.cdrom | xargs hal-device
> > >
> > > I suppose it's important to have a line with "storage.cdrom.cdrw =
> > > true", then we can check "storage.removable.media_available" ...
> > >
> > > Franklin
> > >
> > Thanks for the ideas Franklin.
> > This looks like it might open a can of worms ...
>
> Actually, nautilus-cd-burner's README.Debian states:
>
> "This code detects available CD writers by examining files in /proc.
> It will try /proc/sys/dev/cdrom/info which is created by the 'cdrom'
> module, and /proc/scsi/sg/devices which is created by the 'sg'
> module. One of these modules must be loaded for nautilus-cd-burner
> to work."
>
> So, check if the appropriate modules are loaded, then have a look on the
> kernel side (which Kernel do you use? can you test 2.6.26 or 2.6.30)
>
> Franklin
>
I'm running standard Debian 2.6.26-1-686 kernel. Neither installation
has sg devices; both have /proc/sys/dev/cdrom/info listing both hdd and
hdc. The only difference between them is that the etch one thinks that
hdd:
Can read MRW: 1
Can write MRW: 1
Can write RAM: 1
Other than this, both files have the same information. What further
investigation should I do?
Hope this helps!
Bruce.
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