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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 03-15-2007, 03:51 PM   #1
Registered: Oct 2003
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DMA randomly shuts itself off

I have two optical drives installed, one CD-Rom and one DVD-Rom.
The CD drive is /dev/hda/ while the DVD drive is /dev/hdb/. I have had the ongoing problem of DMA turning itself off randomly for the DVD drive. I am have not a clue how to fix this, and it's not too big of a deal as I can just turn it back on through a terminal, but randomly it will be off when I burn a disc and it will bog down the system horribly while the media is being written.

Any ideas?

Old 03-17-2007, 06:24 AM   #2
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Check for firmware updates for both the CD and DVD devices, also check for a system BIOS upgrade from the manufacturer also and install as needed.
Old 03-17-2007, 11:22 AM   #3
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Meanwhile you could make a little tiny script and put it in the hourly cron folder, or even in another more frequent cron folder, like half-hourly, and simply have it apply the hdparm setting to the drive which turns DMA on.
Check 'man hdparm' for details.


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