[Hampshire] Choppy DVD playback on Edgy

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Author: Peter Brooks
Date:  
To: Hampshire
CC: 
Subject: [Hampshire] Choppy DVD playback on Edgy
Hello all,
I'm trying to play a dvd on edgy eft but whenever the dvd is being actively
read, the video goes extremely choppy.
I get this from hdparm:

theneb@neb-laptop:~$ sudo hdparm /dev/dvd

/dev/dvd:
 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 a bunch of errors in dmesg:
[17181534.764000] hdc: command error: error=0x50 { LastFailedSense=0x05 }
[17181534.764000] ide: failed opcode was: unknown
[17181534.764000] end_request: I/O error, dev hdc, sector 14888932
[17181534.768000] hdc: command error: status=0x51 { DriveReady SeekComplete
Error }


I can't watch zombie movies :(