Unable to enable DMA on some AMD systems
chris at deadhand.com
Sun Jun 5 12:39:15 CDT 2005
Am Sonntag 05 Juni 2005 15:53 schrieb Thomas Hofer:
> My solution was to insert "amd74xx" as first line into /etc/modules and
Now look there,
what me and Google couldn't solve in several hours of investigation you did in
one sentence. Thank you, Thomas!
I actually did several attempts at /etc/modules. But I learned two things
here: Happily appending everything at the *end* of the file isn't always the
best thing to do. And second: I should take a minute and consider what the
changed config file will actually *do*... oh my.
All things done I'm almost there. Now I can enable DMA with hdparm for both my
The module in question was actually "via82cxxx" and not "amd74xx" - so the
issue is not limited to a specific chipset or module it seems, no idea why
some (or many) with apparently similar systems do not have these troubles.
Back on topic I still have to enable hdparm manually. Can you tell me as well,
how I can automate this? I'd rather not have to use hdparm inside a script
(though I'd like to hear about this as well if theres no other way). I
thought there was a way to tell the system to always try to use DMA if
Thanks again for the quick help, this is, well... a lot better than compiling
my own kernel ;)
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