Am Donnerstag, 14. Oktober 2021, 14:09:39 CEST schrieb Rafael J. Wysocki: > > > > >>> huettel@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 <rafael.j.wysocki@xxxxxxxxx> > > > > > 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.) > > > > > > Reverting this is rather not an option, because the code before it was > > > a one-off fix of an earlier issue, but it should be fixable given some > > > more information. > > > > > > Basically, I need a boot log from both the good and bad cases and the > > > acpidump output from the affected machine. > > > > > > > https://dev.gentoo.org/~dilfridge/igb/ > > > > ^ Should all be here now. > > > > 5.10 -> "good" log (the errors are caused by missing support for my i915 graphics and hopefully unrelated) > > 5.14 -> "bad" log > > > > Thank you for looking at this. If you need anything else, just ask. > > You're welcome. > > Please test the attached patch and let me know if it helps. > It helps (*); the second ethernet adaptor is initialized, and works normally as far as I can see. (*) The debug output line following the if-condition apparently changed in the meantime, so I had to apply the change in the if-condition "manually". igb: Intel(R) Gigabit Ethernet Network Driver igb: Copyright (c) 2007-2014 Intel Corporation. igb 0000:01:00.0: enabling device (0000 -> 0002) igb 0000:01:00.0: added PHC on eth1 igb 0000:01:00.0: Intel(R) Gigabit Ethernet Network Connection igb 0000:01:00.0: eth1: (PCIe:5.0Gb/s:Width x4) 6c:b3:11:23:d4:4c igb 0000:01:00.0: eth1: PBA No: H47819-001 igb 0000:01:00.0: Using MSI-X interrupts. 8 rx queue(s), 8 tx queue(s) igb 0000:01:00.1: enabling device (0000 -> 0002) igb 0000:01:00.1: added PHC on eth2 igb 0000:01:00.1: Intel(R) Gigabit Ethernet Network Connection igb 0000:01:00.1: eth2: (PCIe:5.0Gb/s:Width x4) 6c:b3:11:23:d4:4d igb 0000:01:00.1: eth2: PBA No: H47819-001 igb 0000:01:00.1: Using MSI-X interrupts. 8 rx queue(s), 8 tx queue(s) The full boot log is at https://dev.gentoo.org/~dilfridge/igb/ as 5.14.11-*.txt Thanks, Andreas -- PD Dr. Andreas K. Huettel Institute for Experimental and Applied Physics University of Regensburg 93040 Regensburg Germany e-mail andreas.huettel@xxxxx http://www.akhuettel.de/ http://www.physik.uni-r.de/forschung/huettel/
Attachment:
signature.asc
Description: This is a digitally signed message part.
