Subject: Re: [linux-audio-user] A real problem (DVD)
From: Jan Depner (eviltwin69_AT_cableone.net)
Date: Tue Nov 30 2004 - 22:32:09 EET
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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