From mboxrd@z Thu Jan 1 00:00:00 1970 From: erik quanstrom Date: Sat, 10 Jul 2010 07:13:22 -0400 To: 9fans@9fans.net Message-ID: <37bccea9de303e405b8bf4edb5acf98b@kw.quanstro.net> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] ipconfig DHCP problems Topicbox-Message-UUID: 3e190164-ead6-11e9-9d60-3106f5b1d025 On Sat Jul 10 00:04:14 EDT 2010, rminnich@gmail.com wrote: > When you start having interrupt problems, and they are fixed by nomp, > it's a good bet the motherboard has a bad MP table. Many, many boards > have tables that are quite broken. Vendors frequently change IRQ > hardware structure and the general rule is ACPI will likely be right, > because Windows wants it to be; PIRQ will likely be right; but for > some reason, _MP_ is many times quite wrong. given an ioapic, the mp table just doesn't have enough information to uniquely determine vector mappings. unfortunately this problem was never solved. (vendor's answer: use acpi instead.) this is a leading cause of "broken" mp tables. another leading cause is forgetting to delete entries for hardware that bios has configured off. - erik