Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752987AbZFNGkx (ORCPT ); Sun, 14 Jun 2009 02:40:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751992AbZFNGkq (ORCPT ); Sun, 14 Jun 2009 02:40:46 -0400 Received: from terminus.zytor.com ([198.137.202.10]:52612 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751835AbZFNGkp (ORCPT ); Sun, 14 Jun 2009 02:40:45 -0400 Message-ID: <4A349B67.1070603@zytor.com> Date: Sat, 13 Jun 2009 23:40:39 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: "Dr. David Alan Gilbert" CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.{28,30} Keyboard not working on oldish machine References: <20090613230842.GA18347@gallifrey> In-Reply-To: <20090613230842.GA18347@gallifrey> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2573 Lines: 67 Dr. David Alan Gilbert wrote: > Hi, > I've got an old Pentium 90 machine that's been running a 2.4.x > kernel for a long time, seems to work OK on a 2.6.18 kernel > but doesn't seem to like anything newer. > > 2.6.30 no keyboard - but otherwise OK > 2.6.28 no keyboard - but otherwise OK > 2.6.26 reboots just after parsing ELF (maybe one more line) > 2.6.25 reboots almost immediately > 2.6.18 works OK > > The 2.6.18 and 26 are Debian kernels (etch and lenny), the > rest are vanilla from git. > > So it looks like something got fixed between 26 and 28 that > stops the early reboot. > > Attached is the .config from the 2.6.30 and a dmesg from that boot. > /proc/interrupts shows 8 interrupts on interrupt 1 from the i8042 > but it doesn't go up if I type. I've tried a couple of different > keyboards, so I don't think it's just a dislike for the keyboard. > > I can see a /sys entry for the i8042 - I just don't get any input. > > It has an ISA VGA card (Trident 1M) (I needed the PCI slots > for another net card!). > > I compiled it on a 64bit Ubuntu machine. > > [ 0.000000] Linux version 2.6.302.6.30gort1 (dg@davros) (gcc version 4.4.0 (Ubuntu 4.4.0-5ubuntu1) ) #2 Sat Jun 13 18:18:17 BST 2009 It would be good to try an unmodified 2.6.30 kernel here... > [ 0.000000] KERNEL supported cpus: > [ 0.000000] Intel GenuineIntel > [ 0.000000] AMD AuthenticAMD > [ 0.000000] NSC Geode by NSC > [ 0.000000] Cyrix CyrixInstead > [ 0.000000] Centaur CentaurHauls > [ 0.000000] Transmeta GenuineTMx86 > [ 0.000000] Transmeta TransmetaCPU > [ 0.000000] UMC UMC UMC UMC > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-88: 0000000000000000 - 000000000009f000 (usable) > [ 0.000000] BIOS-88: 0000000000100000 - 0000000004000000 (usable) Is 64 MB correct for this machine? > [ 3.147416] PNP: No PS/2 controller found. Probing ports directly. > [ 3.174456] serio: i8042 KBD port at 0x60,0x64 irq 1 > [ 3.174961] serio: i8042 AUX port at 0x60,0x64 irq 12 > [ 3.186312] mice: PS/2 mouse device common for all mice It does, correctly, identify the keyboard and mode port, so it's somewhat odd that it doesn't get used... -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/