Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753586Ab0LaQsT (ORCPT ); Fri, 31 Dec 2010 11:48:19 -0500 Received: from mail-bw0-f46.google.com ([209.85.214.46]:64387 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752150Ab0LaQsS (ORCPT ); Fri, 31 Dec 2010 11:48:18 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=lfQxSHTxivKXICEaAdUSkA/ZAe7KwhYJzvwDhu5NDM7vFrlEeVn1l6+9XOtckff7Dq drgiJZTycq/0CBJsdBNF0p1goK1476jcqbLv3Tmg4iBEFwd6VbFfPwSJGzm1NvlCz/Zd mTEEENcBkshHRprVzuVarKzOR+XoLmGRXoONw= Subject: Re: is there a fix for ubuntu with intel GPU booting to blank screen? From: Maxim Levitsky To: "Robert P. J. Day" Cc: Anca Emanuel , Ubuntu kernel team mailing list , LKML , "intel-gfx@lists.freedesktop.org" In-Reply-To: References:

Content-Type: text/plain; charset="UTF-8" Date: Fri, 31 Dec 2010 18:48:09 +0200 Message-ID: <1293814089.6993.4.camel@maxim-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4308 Lines: 101 On Fri, 2010-12-31 at 09:23 -0500, Robert P. J. Day wrote: > On Fri, 31 Dec 2010, Anca Emanuel wrote: > > > On Mon, Dec 27, 2010 at 1:50 PM, Robert P. J. Day wrote: > > > > > > i've posted on a couple other lists but i figured i'd ask the > > > experts. on my updated/upgraded ubuntu system (gateway NV79 with > > > intel GPU), i've built my own kernel from the latest linus git tree as > > > i've done many times in the past, but this kernel boots to a blank > > > screen. here's a reference that seems to nicely summarize my > > > situation: > > > > > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/561802 > > > > > > weirdly, i'm currently running an earlier "rc" hand-rolled git > > > kernel which works fine: > > > > > > $ uname -a > > > Linux lynx 2.6.37-rc5+ #1 SMP Fri Dec 10 12:09:02 EST 2010 x86_64 GNU/Linux > > > $ > > > > > > (even though it says lynx, it's maverick simply fully updated.) > > > > > > and this is from lspci: > > > > > > 00:02.0 VGA compatible controller: Intel Corporation Core Processor > > > Integrated Graphics Controller (rev 12) (prog-if 00 [VGA controller]) > > > Subsystem: Acer Incorporated [ALI] Device 031c > > > Flags: bus master, fast devsel, latency 0, IRQ 41 > > > Memory at d0000000 (64-bit, non-prefetchable) [size=4M] > > > Memory at c0000000 (64-bit, prefetchable) [size=256M] > > > I/O ports at 3050 [size=8] > > > Expansion ROM at [disabled] > > > Capabilities: > > > Kernel driver in use: i915 > > > Kernel modules: i915 > > > ... snip .. > > > > > > i've tried various suggestions from google, as in "modeset noacpi" > > > and others, but nothing works to get video on my rc7+ kernel. the > > > rc5+ verison, though, boots properly without incident. and the link i > > > gave to launchpad above suggests, at the bottom, that even as late as > > > dec 12, people were still having problems. > > > > > > i'm open to suggestions, not scared to patch my kernel source and > > > rebuild and reboot. > > > > CC: lkml > > > > did you tried 2.6.37-rc8-git1 ? > > i just did a "git pull" to get the latest (-rc8) and "git log" shows > me: > > commit 3643e0e87c13c670a0fdcd0c34401b38b36ff021 > Merge: e983dc2 cc6455f > Author: Linus Torvalds > Date: Thu Dec 30 12:09:26 2010 -0800 > > Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel > > * 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: > drm/i915/dvo: Report LVDS attached to ch701x as connected > Revert "drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks" > drm/i915: Verify Ironlake eDP presence on DP_A using the capability fuse > drm/i915, intel_ips: When i915 loads after IPS, make IPS relink to i915. > drm/i915/sdvo: Add hdmi connector properties after initing the connector > drm/i915: Set the required VFMUNIT clock gating disable on Ironlake. > > > no change, still prints "failed to load i915 symbols, graphics turbo > disabled" just before it all goes black but it clearly continues to > boot. > > not to sound self-important but this is kind of a show-stopper, is > it not? right now, i have exactly one bootable kernel (hand-rolled > 2.6.37-rc5+) and i have no idea *why* that one boots properly but, > under the circumstances, i can't move on. i'm willing to do any > testing if that would help the cause but i suspect enough people are > already digging into this so i'll just be patient and test the next > pass to see if that solves it. Since you know how to compile kernel, and even have a close working version, you really should just bisect the bug. Bisection is a built-in in the git binary search that allows you to find the first commit that introduced the bug. For example, quick google gives, http://www.kernel.org/pub/software/scm/git-core/docs/v1.0.13/howto/isolate-bugs-with-bisect.txt Best regards, Maxim Levitsky -- 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/