ACPI problems with Dell laptops
Eric Anderson
anderson at centtech.com
Sun Nov 27 13:13:35 GMT 2005
Greg 'groggy' Lehey wrote:
> On Saturday, 26 November 2005 at 20:25:58 -0600, Eric Anderson wrote:
>
>>Greg 'groggy' Lehey wrote:
>>
>>>I've had both Dell and ThinkPad (no longer IBM). I prefer Dell,
>>>despite their attempts to convince me otherwise.
>>>
>>>However, we currently seem to have significant ACPI problems with Dell
>>>laptops. I'm writing this on an Inspiron 6000 running 7-CURRENT, but
>>>the same problems occur with 6.0: if I enable ACPI, timing goes to
>>>hell, and some things just time out. There was a similar message a
>>>couple of days ago from an owner of (I think) the latest Latitude
>>>machine, which sounded even worse. My requests for feedback about how
>>>to solve the problem have so far not been resolved. If you're
>>>otherwise tending towards Dell, I'd suggest you watch this space until
>>>there's some indication that the problems will be resolved.
>>
>>Which scheduler are you using?
>
>
> The standard (ULE). I don't think the problem's related to the
> scheduler: it shows all the signs of being an interrupt space problem.
Fine - I'm just offering the parts that I recall working around it for
me - if you are unwilling to at least try it, maybe someone else can and
report back so we know if it is or isn't related.
>>Also, have you tried disabling apic?
>
>
> I think you mean ACPI. This machine doesn't have an APIC.
No, I meant apic. I realize it doesn't have one, but did you try
disabling it?
> To answer the presumed question: Yes, as I said above, the problems
> only occur when I enable ACPI.
>
> Since then I've also discovered that the builtin wireless card doesn't
> work either. It's:
>
> iwi0: <Intel(R) PRO/Wireless 2915ABG> mem 0xdfcfd000-0xdfcfdfff irq 10 at device 3.0 on pci3
> iwi0: Ethernet address: 00:13:ce:46:28:49
>
> After downloading the firmware, I can set IP addresses and such, but
> I always get "no carrier":
>
> iwi0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
> ether 00:13:ce:46:28:49
> media: IEEE 802.11 Wireless Ethernet autoselect
> status: no carrier
> ssid "" channel 1 (2412)
> authmode OPEN privacy OFF deftxkey UNDEF powersavemode OFF
> powersavesleep 100 txpowmax 100 txpower 100 rtsthreshold 2346
> fragthreshold 2346 -pureg protmode CTS -wme roaming AUTO bintval 0
>
> When I run dhclient on the interface, I get:
>
> DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 interval 6
> DHCPDISCOVER on iwi0 to 255.255.255.255 port 67 interval 15
> send_packet: Network is down
>
> On the console I get the detailed error message:
>
> iwi0: fatal error
>
> This machine also has Linux on it, and the card works fine with Linux,
> so it's obviously a FreeBSD-related problem.
I also had problems with it. I ended up replacing it with a mini-pci
atheros card.
Eric
--
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Eric Anderson Sr. Systems Administrator Centaur Technology
Anything that works is better than anything that doesn't.
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