Subject: [linux-audio-user] A real problem (DVD)
From: Matt Barber (brbrofsvl_AT_aol.com)
Date: Tue Nov 30 2004 - 21:55:10 EET
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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