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Old 09-12-2003, 02:43 PM   #1
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Location: Norway, Ulsteinvik
Distribution: Mandrake 10.1
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Question BIOS settings changed by MDK 9.1

I have installed Mandrake 9.1 on a HP Pavilion 7945 together with MS-Windows ME.

Have set the BIOS option for Plug and Play OS to "NO".

The weird, and also annoying thing, is that whenever I have had a session on linux, the sound is gone. I do not have sound in Linux either.

I am using KDE 3.1 and are aware of it defaulting to muted sound. That has been taken care of, and I do see a no-crossed loudspeaker, and the volume is set to something in the 50-ies.

What actually happens is that when I log on, my BIOS settings are being changed. The "On-board Audio Options" - "Audio Codec" is being set to "Disabled".

To get the sound back I have to enter the BIOS and set this back to "Enabled".

Sometimes the "On-board Audio Options" is not visible in the BIOS. Then I have to enter MS-Windows, restart and go back into BIOS to get the named options visible!.

I have done some investigations, and have discovered that the change is done after I log on with my user name (where I also choose KDE).

Has anyone had similar problems and can anyone help?
Old 09-12-2003, 02:50 PM   #2
Registered: Aug 2003
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Well, turn Plug and Play OS to "Yes," for one thing.

Don't know if that will help, but linux does support pnp.
Old 09-12-2003, 03:04 PM   #3
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Erm, I think that BIOS option refers to Windows Plug 'n' Play, not features of the linux kernel, so I'd leave it off as constantly recommended by all install guides.

I think that altering a BIOS setting is tied to kernel sound modules, the user cant directly alter hard/firmware settings, so there might be an option to disable this feature in the loaded module.
Old 09-12-2003, 03:14 PM   #4
Registered: Aug 2003
Distribution: GoboLinux
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Those install guides are for previous version of the linux kernel.

Full plug and play support is a fairly recent addition, but it works well now.

And there is no "Windows Plug & Play" per se; it's an "open" standard. Designed by Microsoft for Microsoft, yes, but it needs to be open so that hardware makers can meet it. So linux meets the same standard now.

Well, my computer works a lot better with Plug And Play OS set to "yes" in the bios, at any rate.

Last edited by kundor; 09-12-2003 at 03:18 PM.
Old 09-12-2003, 03:24 PM   #5
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Location: Norway, Ulsteinvik
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Have been tried both ways

Thanks for the interest,

but sorry guys. I have tried this both ways conserning the PnP option. The same thing happens anyway.


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