Similar problem here cd's either wont mount at all or mount immediately
after booting system and then randomly unmount. Both my drives show up
in Disk Utility and both drives work fine in Windows.
Installed Kernel 2.6.34 and this did not help.
q...@q-desktop:~$ ls -l /dev/{cd,dvd}*
lrwxrwxrwx 1 root root 3 2010-06-17 09:44 /dev/cdrom -> sr0
lrwxrwxrwx 1 root root 3 2010-06-17 09:49 /dev/cdrom1 -> sr1
lrwxrwxrwx 1 root root 3 2010-06-17 09:44 /dev/cdrw -> sr0
lrwxrwxrwx 1 root root 3 2010-06-17 09:49 /dev/cdrw1 -> sr1
lrwxrwxrwx 1 root root 3 2010-06-17 09:44 /dev/dvd -> sr0
q...@q-desktop:~$ sudo hdparm -I /dev/{sr0,sr1}
/dev/sr0:
HDIO_DRIVE_CMD(identify) failed: Invalid exchange
/dev/sr1:
HDIO_DRIVE_CMD(identify) failed: Invalid exchange
/dev/sr0:
ATAPI CD-ROM, with removable media
Model Number: TSST CD-RW/DVD-ROM TSH492B
Serial Number:
Firmware Revision: TB04
Standards:
Supported: CD-ROM ATAPI-1 -2 -3
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
cache/buffer size = unknown
Capabilities:
LBA, IORDY(can be disabled)
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
PACKET command feature set
DEVICE_RESET command
* DOWNLOAD_MICROCODE
Removable Media Status Notification feature set
HW reset results:
CBLID- above Vih
Device num = 0
q...@q-desktop:~$ sudo hdparm -I /dev/sr1
/dev/sr1:
ATAPI CD-ROM, with removable media
Model Number: HL-DT-ST GCE-8320B
Serial Number:
Firmware Revision: 1.01
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
cache/buffer size = unknown
Capabilities:
LBA, IORDY(cannot be disabled)
DMA: mdma0 mdma1 *mdma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=227ns IORDY flow control=120ns
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[Lucid] cdrom drive not recognized automatically
https://bugs.launchpad.net/bugs/562092
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Bugs, which is a bug assignee.
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