unknown: <PNP0f13> can't assign resources (irq)

Nikola Lecic nlecic at EUnet.yu
Thu Jul 5 12:49:43 UTC 2007

On Thu, 05 Jul 2007 20:21:42 +0800
Zhang Weiwu <zhangweiwu at realss.com> wrote:

> Dear list
> I have seen strange message in my dmesg which says it cannot assign
> resources to PNP device:
> [snip]
> sc0: VGA <16 virtual consoles, flags=0x300>
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
> isa0
> unknown: <PNP0303> can't assign resources (port)
> unknown: <PNP0f13> can't assign resources (irq)
> unknown: <PNP0700> can't assign resources (port)
> unknown: <PNP0c02> can't assign resources (memory)
> unknown: <PNP0400> can't assign resources (port)
> pcm0: <CS423x> at port 0x530-0x537,0x388-0x38b,0x220-0x233 irq 5 drq
> 1,0 on isa0 [/snip]
> I have googled around and discussion around the the topic of "PNPxxx
> cannot assign resouce" mostly happen in 2002 ~ 2005, they have
> suggested not to use PNPBIOS option in kernel, which I didn't use at
> all and cannot see references to this kernel option (so should be a
> removed option). Others on the forums suggested (in 2003) that I
> should disable PNP feature in BIOS, which is impossible for me
> because my old IBM Thinkpad don't offer such config option (the only
> config option had been change system date/time and
> start-up-sequence). Even if it doesn't affect the use of the system
> I'd like to know a bit about the background knowledge. At least two
> devices on my FreeBSD doesn't work, the COM port and the second
> PCMCIA slot (anything on that slot doesn't work), though I don't
> think the two devices are related to this kernel message.

Hello Zhang,

Those messages are completely harmless (as you have surely already
read, resources can't be assigned because certain driver(s) are already
using them). There is no elegant way to disable them AFAIK.

The fact that your devices are not working properly is not related to
them but to something else in your installation.

Nikola Lečić

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