From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alberto Gonzalez Subject: Re: [Bug #12337] ~100 extra wakeups reported by powertop Date: Tue, 24 Feb 2009 04:25:11 -0800 (PST) Message-ID: <77208.42754.qm@web53309.mail.re2.yahoo.com> References: <200902242223.39069.nickpiggin@yahoo.com.au> Reply-To: luis6674-/E1597aS9LQAvxtiuMwx3w@public.gmane.org Mime-Version: 1.0 Return-path: In-Reply-To: <200902242223.39069.nickpiggin-/E1597aS9LT0CCvOHzKKcA@public.gmane.org> Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Nick Piggin Cc: Linux Kernel Mailing List , "Rafael J. Wysocki" , Kernel Testers List --- On Tue, 2/24/09, Nick Piggin wrote: > > > Bug-Entry : > > > http://bugzilla.kernel.org/show_bug.cgi?id=12337 > > > Subject : ~100 extra wakeups reported by > powertop > > > Submitter : Alberto Gonzalez > > > > Date : 2008-12-31 12:25 (55 days old) > > > > Still present, yes. > > Any chance you could bisect it? Well, if you look at the report you'd notice that: - I'm using a released, stable, distro (Arch Linux, basically vanilla) kernel. I hardly know how to compile one, let alone bisect it. - I first had the problem on my 5+ year old Pentium 4 with equally old Intel graphics (845G chipset). I thought it would be hardware specific. But now I got a new Core 2 Duo with new Intel graphics (G45 chipset), moved to 64bit, and still have the exact same problem and exact same workaround. So I really don't believe anymore it's something hardware specific and should be quite general to anyone using Intel graphics. I hoped someone with much better knowledge could reproduce it and investigate it better. On the report, Eric Anholt mentioned a likely cause and said that Jesse Barnes had looked into a similar issue before. I cc'd him (jbarnes) on last week reminder, but got no reply. I really wish I could do more, but learning to compile a custom kernel for my hardware and do a git bisect is something I just can't afford now. If relevant people try to reproduce it but can't, and say only possible solution would be for me to bisect it I guess I could try to give it a go when I get some spare time. Thanks, Alberto.