From owner-freebsd-stable@FreeBSD.ORG Mon Dec 23 00:47:08 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 999FE50F for ; Mon, 23 Dec 2013 00:47:08 +0000 (UTC) Received: from mail.ijs.si (mail.ijs.si [IPv6:2001:1470:ff80::25]) by mx1.freebsd.org (Postfix) with ESMTP id 4CEAE167A for ; Mon, 23 Dec 2013 00:47:08 +0000 (UTC) Received: from amavis-proxy-ori.ijs.si (localhost [IPv6:::1]) by mail.ijs.si (Postfix) with ESMTP id 3dnhj51CgtzGN5T for ; Mon, 23 Dec 2013 01:47:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ijs.si; h= content-transfer-encoding:content-type:content-type:subject :subject:mime-version:user-agent:organization:from:from:date :date:message-id:received:received:received; s=jakla2; t= 1387759622; x=1390351623; bh=4MQkz3s9xenfiXFWxhohclaNVrFh7gDeBpj P7lb60qo=; b=T0nV9x+sxnDXyU4mcJPEPWH0+3iUgwBEd2i32u4ge7gxIwUvrig b0ki0A6IwzZphIEBZrmLHGUO0BsbDZcDRBZ3jM9zkT/YirfeFSvSPmXaGPTqj812 jlqLiEwYzwEaME0EcVbbUNO6GQ7Wvly5OpnmJ8cyb7mPbilFQfyj9Z2M= X-Virus-Scanned: amavisd-new at ijs.si Received: from mail.ijs.si ([IPv6:::1]) by amavis-proxy-ori.ijs.si (mail.ijs.si [IPv6:::1]) (amavisd-new, port 10012) with ESMTP id WO3PJoblsKR0 for ; Mon, 23 Dec 2013 01:47:02 +0100 (CET) Received: from mildred.ijs.si (mailbox.ijs.si [IPv6:2001:1470:ff80::143:1]) by mail.ijs.si (Postfix) with ESMTP for ; Mon, 23 Dec 2013 01:47:02 +0100 (CET) Received: from [192.168.3.109] (upc.si.94.140.92.23.dc.cable.static.telemach.net [94.140.92.23]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mildred.ijs.si (Postfix) with ESMTPSA id 552A8D14 for ; Mon, 23 Dec 2013 01:47:02 +0100 (CET) Message-ID: <52B78808.1090802@ijs.si> Date: Mon, 23 Dec 2013 01:47:04 +0100 From: Mark Martinec Organization: Jozef Stefan Institute User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Subject: Graphical console in stable/10 stuck on heavy writing Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Dec 2013 00:47:08 -0000 FreeBSD amd64, recent stable/10: When running some task on a graphical console window and that task writes lots of output to a console, the console gets stuck after some time (like 20 minutes), output stops, keyboard appears unresponsive, alt-ctrl-Fn is unable to switch consoles - but the machine seems otherwise sane: I can log in over ssh, file system and processes are healthy, CPU not busy. This was first noticed trying to rebuild kde from ports in a console window. Same happened when bulk updating packages from a remote site and the pkg update was busily writing its output to a console. The same heavy tasks (e.g. ports rebuild) can run just fine in an ssh session, or in a konsole / xterm. As a final proof, I tried a perl one-liner which writes a line (a count and some text) ten times per second: it manages to screw up the console window in about 6 minutes. Interestingly, while the console output is stuck and I blindly type a command on a keyboard (no echo), then run a shutdown from another (ssh) session, the console output gets unstuck during shutdown, rapidly displays the missing lines, including the echo of a command typed blindly previously, along with its output. Btw, this never happened on this machine while it was running 9.2 or older versions. Anybody seen this or can reproduce it? Mark