I've just started using Linux and was recommended Knoppix as a good Distro. I've burnt a boot disc and it works brilliantly (faster than my current windows install) but for some reason if I boot from the CD with ACPI and DMA on GRUB fails to find any of my hardware (USB ports, sound card, Ethernet adapter). All is fine when I turn them off on startup but I was wondering if anyone could tell me why, and if theres a way to fix it. I'm assuming its something to do with my laptop (3 years old, Pentium 4 processor 2.4 GHz )
More importantly I wanted to check this won't matter when I do an install onto a partition of my HD, again I'm assuming I can turn it off relatively easily.
Thanks for any help in advance, I'm definitely up for learning more about the system
Lina
Kano - 12.07.2006, 17:56 Uhr Titel: RE: ACPI/DMA problems
Well you can try:
acpi=off
or
nodma
options to find the real problem. Both options are bad somehow, but as a P4 Cpu has no Speedstep disabling ACPI does not really matter. When you need to disalbe DMA it is worse.
Lina - 12.07.2006, 18:24 Uhr Titel:
Cool, it looks like APCI is the problem,
the default path in GRUB for no APCI says noacpi instead of acpi=off which is what was confusing me
when I do a system install is there a way to set this as default or will I need to edit the command line each time?
Many thanks
Kano - 12.07.2006, 19:36 Uhr Titel:
No, after hd install acpi=off is permanent.