From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas K. Huettel Date: Tue, 12 Oct 2021 18:34:35 +0200 Subject: [Intel-wired-lan] [EXT] Re: Intel I350 regression 5.10 -> 5.14 ("The NVM Checksum Is Not Valid") [8086:1521] In-Reply-To: References: <1823864.tdWV9SEqCh@kailua> <2944777.ktpJ11cQ8Q@pinacolada> Message-ID: <2801801.e9J7NaK4W3@kailua> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: > > The messages easily identifiable are: > > > > huettel at pinacolada ~/tmp $ cat kernel-messages-5.10.59.txt |grep igb > > Oct 5 15:11:18 dilfridge kernel: [ 2.090675] igb: Intel(R) Gigabit Ethernet Network Driver > > Oct 5 15:11:18 dilfridge kernel: [ 2.090676] igb: Copyright (c) 2007-2014 Intel Corporation. > > Oct 5 15:11:18 dilfridge kernel: [ 2.090728] igb 0000:01:00.0: enabling device (0000 -> 0002) > > This line is missing below, it indicates that the kernel couldn't or > didn't power up the PCIe for some reason. We're looking for something > like ACPI or PCI patches (possibly PCI-Power management) to be the > culprit here. > So I did a git bisect from linux-v5.10 (good) to linux-v5.14.11 (bad). The result was: dilfridge /usr/src/linux-git # git bisect bad 6381195ad7d06ef979528c7452f3ff93659f86b1 is the first bad commit commit 6381195ad7d06ef979528c7452f3ff93659f86b1 Author: Rafael J. Wysocki Date: Mon May 24 17:26:16 2021 +0200 ACPI: power: Rework turning off unused power resources [...] I tried naive reverting of this commit on top of 5.14.11. That applies nearly cleanly, and after a reboot the additional ethernet interfaces show up with their MAC in the boot messages. (Not knowing how safe that experiment was, I did not go further than single mode and immediately rebooted into 5.10 afterwards.) -- PD Dr. Andreas K. Huettel Institute for Experimental and Applied Physics University of Regensburg 93040 Regensburg Germany e-mail andreas.huettel at ur.de http://www.akhuettel.de/ http://www.physik.uni-r.de/forschung/huettel/