From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:46547 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752260AbdBCUvc (ORCPT ); Fri, 3 Feb 2017 15:51:32 -0500 Date: Fri, 3 Feb 2017 21:51:29 +0100 From: Pavel Machek To: Alan Stern Cc: kernel list , linux-usb@vger.kernel.org, gregkh@linuxfoundation.org, bhelgaas@google.com, linux-pci@vger.kernel.org Subject: Re: v4.10-rc6 boot regression on Intel desktop, does not boot after cold boots, boots after reboot Message-ID: <20170203205129.GA3791@amd> References: <20170203190414.GA3701@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="opJtzjQTFsWo+cga" In-Reply-To: Sender: linux-pci-owner@vger.kernel.org List-ID: --opJtzjQTFsWo+cga Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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. >=20 > 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. "usbcore.nousb usbcore.nousb=3D1" on kernel command line does not help. So maybe it is not USB after all. (Sorry). > Last message I can see on console is something like: > > pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000= dffff] If I do the reboot dance with 4.10-rc6, messages around the hang are: [ 0.281948] RPC: Registered named UNIX socket transport module. [ 0.282009] RPC: Registered udp transport module. [ 0.282068] RPC: Registered tcp transport module. [ 0.282126] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.282205] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 0.316266] PCI: CLS 64 bytes, default 64 [ 0.316330] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 0.316395] software IO TLB [mem 0xb987e000-0xbd87e000] (64MB) mapped at [ffff8800b987e000-ffff8800bd87dfff] [ 0.317912] futex hash table entries: 1024 (order: 5, 131072 bytes) [ 0.318646] workingset: timestamp_bits=3D62 max_order=3D20 bucket_order=3D0 So I guess this is something with PCI subsystem? Ideas welcome... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --opJtzjQTFsWo+cga Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAliU7VEACgkQMOfwapXb+vKoNQCgl9llWEYKIiIBJpCDzK6AJnoy 6vIAoIA9e2k9rYUvKzB6gR2RkYGvxRXG =6VFX -----END PGP SIGNATURE----- --opJtzjQTFsWo+cga--