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Old 10-23-2007, 07:20 AM   #1
Registered: Apr 2005
Distribution: Mint KDE on the Desktop, Debian on the Server
Posts: 66

Rep: Reputation: 15
DVD-ROM apparently busted

Hello everyone.

I believe my laptop's DVD-ROM had a mechanical issue today, for reasons unknown to me.

I keep getting this kind of error messages in my dmesg:

hdc: ide_intr: huh? expected NULL handler on exit
hdc: ATAPI reset complete
end_request: I/O error, dev hdc, sector 0
hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
hdc: cdrom_decode_status: error=0x40 { LastFailedSense=0x04 }
ide: failed opcode was: unknown
And whenever i insert *any* kind of disc my KDE autostart invarably reports a Blank CD; which makes me think that either the disc is not spinning or the lens is not moving in order to read. The drive still makes *some* of the familiar noises associated with reading, but it doesnt work even during boot.

I also attempted fiddling around with DMA, just in case:

dfuentes@raziel:~$ sudo hdparm -d 1 /dev/hdc

 setting using_dma to 1 (on)
 using_dma     =  1 (on)
dfuentes@raziel:~$ sudo hdparm /dev/hdc

 IO_support    =  0 (default 16-bit)
 unmaskirq     =  0 (off)
 using_dma     =  1 (on)
 keepsettings  =  0 (off)
 readonly      =  0 (off)
 readahead     = 256 (on)
 HDIO_GETGEO failed: Inappropriate ioctl for device
And then the DMA flag is deactivated whenever i try to read a disc.

Does anyone know of a way of confirming my suspicions? I am already finding out about my warranty and/or a possible replacement, but i want to make sure before i do anything.
Old 10-23-2007, 07:50 AM   #2
Senior Member
Registered: Dec 2005
Location: Indiana
Distribution: RHEL/CentOS/SL 5 i386 and x86_64 pata for IDE in use
Posts: 4,790

Rep: Reputation: 57
Use a known working bootable CD/DVD along with the BIOS set to boot from the drive first, if the media does not boot the system it is broken.
Old 10-23-2007, 08:55 AM   #3
Registered: Apr 2005
Distribution: Mint KDE on the Desktop, Debian on the Server
Posts: 66

Original Poster
Rep: Reputation: 15
Yeah, already did that; I will look for a replacement.



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