Optiarc DVD RW AD-7260S not usable in Ubuntu 11.04
I have a new PC with a fresh install of Ubuntu 11.04. The CD/DVD drive cannot be used - there is no device for it in /dev. When Windows 7 was installed on the PC when it came to me five days ago, the drive worked just fine. When I tried to install Ubuntu from a CD or DVD, the system would boot to it, but when an installation was attempted it would lose the drive and not be able to continue. I ended up having to install Ubuntu from a USB stick loaded with the ISO image.
My system is a CyberPower PC with Gigabyte Z68A-D3-B3 motherboard. The DVD drive is on IDE Channel 1 Master. Nothing else is on that channel.
Today, I found the following messages in dmesg:
[ 1.983919] ata2.00: ATAPI: Optiarc DVD RW AD-7260S, 1.03, max UDMA/100
[ 1.984246] ata1.00: ATA-8: ST31000524AS, JC45, max UDMA/133
[ 1.984250] ata1.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 0/32)
[ 2.023905] ata2.00: configured for UDMA/100
[ 2.124189] ata2.00: TEST_UNIT_READY failed (err_mask=0x2)
Please help me to correct this problem. I have found many bugs on Launchpad describing similar problems. Some of them have an importance of "High" but a status of "Unassigned". I would be happy to provide any info needed to help fix this problem.
Thank you very much,
Tim
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