Arch Linux

beast123

Member

Registered: 2008-09-11

Posts: 20

blacklisting modules

Hello,

I am playing around with the kernel in a vm. Currently, it hangs for about 10-15 seconds on Loading Udev during boot. I want to prevent udev from loading any sound modules (of which it loads 9) since I don't need sound on the vm. My modules array is

MODULES=(mii pcnet32 vboxadd !pcspkr !snd !soundcore)

but it loads all three of those. Here is what hwdetect --show-modules shows under sound after a couple reboots:

SOUND: pcspkr snd-mixer-oss snd-pcm-oss snd-page-alloc snd-pcm snd-timer snd snd-pcsp soundcore

bangkok_manouel

Member

From: indicates a starting point

Registered: 2005-02-07

Posts: 1,556

Re: blacklisting modules

try lsmod instead. IIRC hwdetect shows the modules you might need, not the ones that are loaded.

beast123

Member

Registered: 2008-09-11

Posts: 20

Re: blacklisting modules

yes you are right. lsmod shows the modules are no longer loaded.

ANother question, though. I am looking through lsmod and wondering what some of these modules do. I've tried googling some of them but there usually isn't a clear answer. how do you know what a module does?

initbox

Member

Registered: 2008-09-27

Posts: 172

Re: blacklisting modules

yes you are right. lsmod shows the modules are no longer loaded.

ANother question, though. I am looking through lsmod and wondering what some of these modules do. I've tried googling some of them but there usually isn't a clear answer. how do you know what a module does?

modinfo.

bgc1954

Member

From: Edmonton, AB, Canada

Registered: 2006-03-14

Posts: 1,160

Re: blacklisting modules

You might also want to add !snd_pcsp to your MODULES array.  This will also cause the pc speaker to be active if you don't.

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Time is a great teacher, but unfortunately it kills all its pupils ... - Louis Hector Berlioz