Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758077AbaFYS0T (ORCPT ); Wed, 25 Jun 2014 14:26:19 -0400 Received: from mga11.intel.com ([192.55.52.93]:36094 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757671AbaFYS0S (ORCPT ); Wed, 25 Jun 2014 14:26:18 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,547,1400050800"; d="scan'208";a="560905895" Date: Wed, 25 Jun 2014 21:26:09 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Alan Stern Cc: Daniel Vetter , intel-gfx , Kernel development list Subject: Re: [Intel-gfx] Regression in i915 driver in 3.16-rc2 Message-ID: <20140625182609.GY27580@intel.com> References: <20140108161713.GT4770@phenom.ffwll.local> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.22 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 25, 2014 at 02:06:55PM -0400, Alan Stern wrote: > Daniel: > > I encountered a new problem in the i915 driver the first time I booted > a 3.16-rc kernel on this computer. When it switched over to the frame > buffer driver, the screen went blank and stayed that way. > > 3.15 works okay. > > Attached are log extracts from 3.15 and 3.16 (both with drm.debug=0xe > in the boot command line). The timestamps have been stripped out for > easy diff comparison. These are the result of > > dmesg | egrep 'drm|i915|frame' > > with a couple of irrelevant lines removed. I can send the complete > logs if you need them. > > Alan Stern > Kernel command line: BOOT_IMAGE=/boot/test-3.x root=/dev/hda8 ro console=ttyS0,115200 console=tty0 earlyprintk=serial,ttyS0,115200 no_console_suspend drm.debug=0xe vconsole.keymap=us vconsole.font=latarcyrheb-sun16 LANG=en_US.UTF-8 usbcore.dyndbg=+p ehci_hcd.dyndbg=+p > [drm] Initialized drm 1.1.0 20060810 > [drm:i915_dump_device_info] i915 device info: gen=2, pciid=0x2572 flags=has_overlay,overlay_needs_physical, > [drm:intel_detect_pch] No PCH found. > [drm] Memory usable by graphics device = 128M > [drm:i915_gem_gtt_init] GMADR size = 128M > [drm:i915_gem_gtt_init] GTT stolen size = 8M > [drm:i915_gem_gtt_init] ppgtt mode: 0 > [drm:intel_opregion_setup] graphic opregion physical addr: 0x0 > [drm:intel_opregion_setup] ACPI OpRegion not supported! > [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [drm] Driver supports precise vblank timestamp query. > [drm:init_vbt_defaults] Set default to SSC at 66667 kHz > [drm:parse_general_features] BDB_GENERAL_FEATURES int_tv_support 1 int_crt_support 0 lvds_use_ssc 0 lvds_ssc_freq 48000 display_clock_mode 0 fdi_rx_polarity_inverted 0 ^^^^^^^^^^^^^^^^^ This should get your display back: http://patchwork.freedesktop.org/patch/28508/ -- Ville Syrj?l? Intel OTC -- 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/