From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752751AbdBCV7I (ORCPT ); Fri, 3 Feb 2017 16:59:08 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:37874 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752452AbdBCV7H (ORCPT ); Fri, 3 Feb 2017 16:59:07 -0500 Date: Fri, 3 Feb 2017 16:59:05 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Pavel Machek cc: kernel list , , , , Subject: Re: v4.10-rc6 boot regression on Intel desktop, does not boot after cold boots, boots after reboot In-Reply-To: <20170203211854.GA3697@amd> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 3 Feb 2017, Pavel Machek wrote: > Hi! > > > > > Hmm. I moved keyboard between USB ports, and now 4.10-rc6 no longer > > > > boots. v4.6 works ok. Let me try with keyboard unplugged... no, I > > > > could not get it to work. I believe v4.9 and some v4.10-rc's worked, > > > > but I'll have to double check. > > > > > > But all the kernel versions worked when the keyboard was plugged into > > > its original USB port? > > > > Aha. So it looks difference is probably in "where is keyboard plugged > > in" but in "reboot" vs. "cold boot". I did not do a cold boot in quite > > a while :-(. > > > > Booting to grub, then hitting ctrl-alt-del is enough to make it work. Ouch. > > > > It happens with current Linus' tree. > > v4.10-rc6-feb3 : broken > v4.9 : ok > (v4.6 : ok) All I can suggest is git bisect. :-( But I agree that the problem is unlikely to be in the USB layer. Alan Stern