From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 24 Sep 2001 10:23:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 24 Sep 2001 10:22:50 -0400 Received: from CPE-61-9-150-176.vic.bigpond.net.au ([61.9.150.176]:1270 "EHLO e4.eyal.emu.id.au") by vger.kernel.org with ESMTP id ; Mon, 24 Sep 2001 10:22:37 -0400 Message-ID: <3BAF41AA.5014DF6E@eyal.emu.id.au> Date: Tue, 25 Sep 2001 00:22:34 +1000 From: Eyal Lebedinsky Organization: Eyal at Home X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.4.10-pre15 i686) X-Accept-Language: en MIME-Version: 1.0 To: Linux-Kernel mailing list Subject: Re: 2.4.10-pre15 -> final breaks IOAPIC on UP? In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > > > So, I believe that any IOAPIC related change between 2.4.10-pre15 and > > 2.4.10-final breaks my X11 here. > > Uniprocessor IO-APIC only works for some machines. It also subtly changes > IRQ delivery timing properties which may be worth checking too I have an SMP machine (Epox D3VA, 2xPIII/933) which needs "noapic" boot or it fails to read the "partition check" (lost interrupt). It is this way since 2.4.8 and around 2.4.9-ac12 I checked and it had the same problem. The problem is 100% reproducible. I believe there are still some problems with apic even on SMP. Maybe only on some mobos? -- Eyal Lebedinsky (eyal@eyal.emu.id.au)