optical drive problem

michaelk · 03-05-2015, 05:09 AM

That looks normal so at the moment I do not think it is a module problem. Are you sure the disk you are trying to mount is a valid data disc?

With the questionable CD inserted post the output of the command (as root just to be sure):
file -s /dev/sr0

Could be a hardware problem...

business_kid · 03-05-2015, 06:49 AM

The hardware problems in cd players are all around sensitivity. A good cdr that one dodgy drive may see as all zeroes another dodgy drive will see as all ones. That's the issue: seeing ones and zeroes where they were put.

Some drives read cdrs poorly, but this is rarely a problem unless one drive is very old. Anything over 40x read is usually free of this issue.

veerain · 03-05-2015, 07:04 AM

Also try setting the cd reading speed with eject command. Place the cd/dvd in drive. Then run:

Code:

eject -x 2 /dev/sr0

Replace sr0 with your cd/dvd block device file.

Report what happens.

beckwith · 03-05-2015, 11:59 PM

veerain...

I tried as you stated:

Quote:

/big/sherlock $ wodim -raw96r -speed=2 -dev=/dev/sr0 'Holmes Archive'
wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'hp '
Identification : 'CDDVDW SH-216DB '
Revision : 'HH10'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
wodim: Track 1 has unknown length.
wodim: Use tsize= option in RAW mode to specify track size.
/big/sherlock $ su
Password:
root@palantir:/big/sherlock# wodim -raw96r -speed=2 -dev=/dev/sr0 'Holmes Archive'
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'hp '
Identification : 'CDDVDW SH-216DB '
Revision : 'HH10'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
wodim: Track 1 has unknown length.
wodim: Use tsize= option in RAW mode to specify track size.

I did not know the tsize to enter

--------------------

michaelk...

Quote:

root@palantir:/big/sherlock# file -s /dev/sr0
/dev/sr0: sticky # ISO 9660 CD-ROM filesystem data '2015-01-26.tar '
root@palantir:/big/sherlock#

--------------------

to all...

device is now *working* Amazing. The only change I have made
was to change ~/.local/share/Trash/metadata from size=1.8exabytes
to size=0, this fixed "trash full when empty"

Not sure if to mark this thread "solved", or look for a Serendipity
option (LOL)

Thanks to all for trying.

veerain · 03-06-2015, 12:07 AM

Quote:

I did not know the tsize to enter

It's not absolutely needed.

By the way I didn't understand what fixed your problem?