From owner-freebsd-stable@FreeBSD.ORG Wed Jul 25 01:35:23 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6F78D106564A for ; Wed, 25 Jul 2012 01:35:23 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mail-wg0-f50.google.com (mail-wg0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id BD1D58FC0C for ; Wed, 25 Jul 2012 01:35:22 +0000 (UTC) Received: by wgbds11 with SMTP id ds11so165802wgb.31 for ; Tue, 24 Jul 2012 18:35:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=IU5zHhFXb2mMl5IbFG8ki4bLYoGccYx8eK5QPda8ofg=; b=s85UpagUzGNE7t/so21XZnOdbKxPqO3s3I+hTd5PvR1LRkcjCWgyN2+aD/L1UlQQcr QPzhrdiuZy7Bf2cgAjQMGnIqaMkMYLdDAddyapF/rvXMy+mBVMEMZu7GZqOEmF+ocoTl +Jy08c4dhwv5SrZV37kFgYaqkBgCEvo5iB/TF58dADXAWEzMOFM5Sdt8rdsk/YPhUMl8 J0DUB9JBPrAXye9/qEjX9sLnvTphITYg2wt+J1awH85wG18d0rIVNe5jqxn5nBP8FMma SueDXlnWlaSVCQZJPlcdnazRsGElixbltiZqoeY3+GpjIYSZwy8Cw3Vjj5sKZEIgEYHQ 9Klw== MIME-Version: 1.0 Received: by 10.216.241.137 with SMTP id g9mr9980519wer.122.1343180121731; Tue, 24 Jul 2012 18:35:21 -0700 (PDT) Received: by 10.223.60.147 with HTTP; Tue, 24 Jul 2012 18:35:21 -0700 (PDT) Date: Tue, 24 Jul 2012 18:35:21 -0700 Message-ID: From: Kevin Oberman To: "freebsd-stable@freebsd.org Stable" Content-Type: text/plain; charset=UTF-8 Subject: Regression in stable for ThinkPad T520 with Intel GPU (Sandybridge) between June 22 and July 18 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Jul 2012 01:35:23 -0000 I will shortly spend a bit of time tracking down the breakage more closely, but my 9-Stable system of June 22 runs fine. After an update on about July 10, I noted that it would hang after Xorg was started, but usually worked. After an upgrade to July 18, my system could no longer start Gnome. It would start Xorg and Gnome would start normally, getting many apps started, but about 10 seconds after the wallpaper loaded, the system would freeze solid. No network access and no response to mouse or keyboard. I have looked into commits to 9-STABLE during the time at issue and very little seems to have changed due to the pre-9.1 freeze. Similarly, nothing much has changed in any of the X11 ports. This really smells a lot like a race condition. I can trigger the same behavior by enabling VT-x (not VT-d) in BIOS. In all cases where it was intermittent, if my desktop completed startup, the system runs fine until re-booted. This is probably the primary reason I might not have realized that there was a problem as I don't boot the system often except when traveling, which I was between July 1 and July 6 and again July 18 when the system died. Any idea what I might try looking at? -- R. Kevin Oberman, Network Engineer E-mail: kob6558@gmail.com