From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MJ56I-0008Cq-I2 for qemu-devel@nongnu.org; Tue, 23 Jun 2009 08:27:46 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MJ56D-00087F-Rw for qemu-devel@nongnu.org; Tue, 23 Jun 2009 08:27:46 -0400 Received: from [199.232.76.173] (port=39616 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MJ56D-00086o-L1 for qemu-devel@nongnu.org; Tue, 23 Jun 2009 08:27:41 -0400 Received: from ra.siriusit.co.uk ([217.207.197.130]:39465) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1MJ56D-00021K-5H for qemu-devel@nongnu.org; Tue, 23 Jun 2009 08:27:41 -0400 Message-ID: <4A40CA37.3080207@siriusit.co.uk> Date: Tue, 23 Jun 2009 13:27:35 +0100 From: Mark Cave-Ayland MIME-Version: 1.0 Subject: Re: [Qemu-devel] [SOLUTION] "i8042.c: No controller found" -> OS sees no keyboard if I type "in BIOS" References: <4A0C232D.1020201@wpkg.org> <4A13CDC4.3000704@wpkg.org> <4A1405E1.70405@wpkg.org> <20090607040410.GA25831@amt.cnet> <4A2D1752.1080004@wpkg.org> <4A2D1C75.2040006@wpkg.org> <20090608143021.GA6107@amt.cnet> <4A2D2A16.3030400@wpkg.org> <4A2D32B1.2050002@siriusit.co.uk> In-Reply-To: <4A2D32B1.2050002@siriusit.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Tomasz Chmielewski , Marcelo Tosatti , Anthony Liguori , qemu-devel@nongnu.org Mark Cave-Ayland wrote: >>> -#define PS2_QUEUE_SIZE 256 >>> +#define PS2_QUEUE_SIZE 16 >> >> 15? With 16 it can still break (broken BIOS?). > > FWIW I wonder if this is also responsible for the bug report I posted here: > > http://lists.gnu.org/archive/html/qemu-devel/2008-05/msg00853.html > > Basically after a random length of time from 1 - 5 days, the mouse under > an NT4 guest goes crazy - a single touch and it goes flying randomly all > around the screen. Restarting the VM resolves the issue. Sorry for resurrecting an old thread again, but thought it may be useful for the archives. I upgraded to kvm-86 and changed PS2_QUEUE_SIZE to 16 for my troublesome NT4 guest, and when it fired up, the keyboard worked fine but the mouse would not respond. I then tried raising PS2_QUEUE_SIZE to 32 and then both the mouse and keyboard started to work. I'll keep an eye on this and see whether it starts to behave strangely again with this smaller buffer size. HTH, Mark. -- Mark Cave-Ayland - Senior Technical Architect PostgreSQL - PostGIS Sirius Corporation plc - control through freedom http://www.siriusit.co.uk t: +44 870 608 0063