[linux-audio-user] A real problem (DVD)

Jan Depner eviltwin69 at cableone.net
Tue Nov 30 15:32:09 EST 2004


I don't know about FC 2 but on FC 1 I use /dev/dvd.  It is linked on my
system to /dev/scd0.  My fstab entry looks like this:

/dev/dvd                /mnt/dvd                udf,iso9660
noauto,owner,kudzu 0 0

Jan



On Tue, 2004-11-30 at 13:55, Matt Barber wrote:
> Hi,
> 
> Here's something that's been stumping me:
> 
> 
> Our DVD drive (Plextor 708A) can read and mount CDroms and it can play
> CD-Audio, but it can't read or write DVDs (anything that tries to use it
> gives a "no medium found" error).  
> 
> $ mount /dev/cdrom
> mount: No medium found
> 
> similar error message with k3b...
> 
> The problem is not playing DVDs with xine or anything like that - I
> can't get the drive to even acknowledge there's anything in it.
> 
> 
> Some computer info:
> 
> 
> Dual Opteron (tyan thunder mobo)
> SATA hard drives (western digital)
> 
> Fedora 2 planetccrma setup:
> 
> $ uname -r
> 2.6.7-1.437.1.ll.rhfc2.ccrmasmp
> 
> (using this kernel for now because cdburning in other newer kernels
> hardlocks the system -- through 2.6.8.1... haven't tested past that)
> 
> here's something from /var/log/messages I get when I put in a DVD:
> 
> Nov 30 12:07:30 madking kernel: hda: packet command error: status=0x51 {
> DriveReady SeekComplete Error }
> Nov 30 12:07:30 madking kernel: hda: packet command error: error=0x44
> Nov 30 12:07:30 madking kernel: ATAPI device hda:
> Nov 30 12:07:30 madking kernel:   Error: Hardware error -- (Sense
> key=0x04)
> Nov 30 12:07:30 madking kernel:   Tracking servo failure -- (asc=0x09,
> ascq=0x01)
> Nov 30 12:07:30 madking kernel:   The failed "Read Cd/Dvd Capacity"
> packet command was:
> Nov 30 12:07:30 madking kernel:   "25 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 "
> 
> 
> the corresponding dmesg lines:
> 
> cdrom: open failed.
> hda: packet command error: status=0x51 { DriveReady SeekComplete Error }
> hda: packet command error: error=0x44
> ATAPI device hda:
>   Error: Hardware error -- (Sense key=0x04)
>   Tracking servo failure -- (asc=0x09, ascq=0x01)
>   The failed "Read Cd/Dvd Capacity" packet command was:
>   "25 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 "
> 
> 
> 
> 
> 
> cd drive info:
> 
> cdrecord -scanbus    
> 
> when run as user:
> 
> scsibus0:
>         0,0,0     0) 'PLEXTOR ' 'DVDR   PX-708A  ' '1.04' Removable
> CD-ROM
>         0,1,0     1) *
>         0,2,0     2) *
>         0,3,0     3) *
>         0,4,0     4) *
>         0,5,0     5) *
>         0,6,0     6) *
>         0,7,0     7) *
> 
> when run as root:
> 
> scsibus0:
>         0,0,0     0) '' '' '' Disk
>         0,1,0     1) *
>         0,2,0     2) *
>         0,3,0     3) *
>         0,4,0     4) *
>         0,5,0     5) *
>         0,6,0     6) *
>         0,7,0     7) *
> scsibus1:
>         1,0,0   100) '' '' '' Disk
>         1,1,0   101) *
>         1,2,0   102) *
>         1,3,0   103) *
>         1,4,0   104) *
>         1,5,0   105) *
>         1,6,0   106) *
>         1,7,0   107) *
> 
> 
> 
> $ cat /proc/sys/dev/cdrom/info
> CD-ROM information, Id: cdrom.c 3.20 2003/12/17
>  
> drive name:             hda
> drive speed:            40
> drive # of slots:       1
> Can close tray:         1
> Can open tray:          1
> Can lock tray:          1
> Can change speed:       1
> Can select disk:        0
> Can read multisession:  1
> Can read MCN:           1
> Reports media changed:  1
> Can play audio:         1
> Can write CD-R:         1
> Can write CD-RW:        1
> Can read DVD:           1
> Can write DVD-R:        1
> Can write DVD-RAM:      0
> Can read MRW:           1
> Can write MRW:          1
> Can write RAM:          1
> 
> 
> 
> 
> 
> hdparm info:
> 
> $ hdparm /dev/hda
>  
> /dev/hda:
>  HDIO_GET_MULTCOUNT failed: Invalid argument
>  IO_support   =  3 (32-bit w/sync)
>  unmaskirq    =  1 (on)
>  using_dma    =  1 (on)
>  keepsettings =  0 (off)
>  readonly     =  0 (off)
>  readahead    = 256 (on)
>  HDIO_GETGEO failed: Invalid argument
> 
> 
> $ hdparm -tT /dev/hda
>  
> /dev/hda:
> read() failed: Input/output error
>  Timing buffered disk reads:  read() failed: Input/output error
> 
> 
> Not sure what other info to give.  I don't have much of a way to
> troubleshoot the problem by process of elimination - I have a Pioneer
> drive that I can try later today...  we have another box with the same
> kernel, but it's a P4 and uses IDE drives.  My instinct is that it's
> some kind of conflict between IDE and SCSI, but it could be a problem
> with the 64-bit processors (using x86, though, not x86_64, which is not
> available on planetccrma yet) or it could be an smp thing (if it's not
> the drive) -- lame segfaults on the opteron box but not on the P4 box,
> so I think that is probably a 64bit/smp issue, and so this DVD problem
> could be similar.  I will try the other drive later today and see if it
> makes a difference.
> 
> Thanks,
> 
> Matt
> 




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