From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guennadi Liakhovetski Subject: Re: [2.6.25-rc6] possible regression: X server dying Date: Thu, 24 Apr 2008 18:03:30 +0200 (CEST) Message-ID: References: <47E82D68.5070305@imap.cc> <21d7e9970803241622v10b887a6p869535102b486279@mail.gmail.com> <47E83D14.8070800@imap.cc> <21d7e9970803241753q433e7545pdd00eae189846a8@mail.gmail.com> <21d7e9970803302153s314d48d3o7120a56092eeaede@mail.gmail.com> <21d7e9970804060044i25b36802p1859ca25fa532494@mail.gmail.com> <20080406143434.106940@gmx.net> <21d7e9970804071527g14402783j26bfdbd2beb1b026@mail.gmail.com> Mime-Version: 1.0 Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: TEXT/PLAIN; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dave Airlie Cc: Gerhard Pircher , linux-kernel@vger.kernel.org, adaplas@gmail.com, linux-fbdev-devel@lists.sourceforge.net On Tue, 8 Apr 2008, Guennadi Liakhovetski wrote: > Hm, so looks like I'm not seeing some ghosts on mine either. 2.6.25-rc8 > xorg runs under etch, but enters a tight (no syscalls) loop woth 100% CPU > load under lenny. A 2.6.24 based kernel works under both etch and lenny... > Haven't had time to try to localize the problem. Glint xorg driver, DRM > and AGP are off, CONFIG_FB_PM2=y. Ok, here's more info. It DOES seem to be a regression. I spent half a day yesterday trying to trace this down, with no success. Multiple bisect attempts ended up with non-bootable kernels on the very first iteration. Today I just wanted to post all possible logs / configs to Bugzilla and - it "suddenly" worked... And the change that made it work was - I disabled CONFIG_FB_PM2 in the kernel... So, I think, this shall be qualified as a regression, although, I have no idea where. pm2fb.c itself hasn't (effectively for little endian) changed since 2.6.24. To make it visual etch lenny v2.6.24 works works v2.6.25 works fails /me thinks he should trade his ap400 to the Linux Kernel Testers Inc. for LOTS of money. Thanks Guennadi --- Guennadi Liakhovetski