Hi Ganapathi, thank you for picking this up again. To reproduce the issue it should be enough to make sure L1.2 is enabled and can be entered (all other L-states are enabled), that should be the case by default when using Fedora 30. The issue might then appear at any time, although it seems to happen more quickly when downloading a file.
Additionally, the reason why the "pcie_aspm=off" kernel cmdline parameter doesn't work for people is that the kernel follows ACPI rules here [1] and refuses to take over control of the ASPM configuration because ACPI requires ASPM to be enabled. Also I assume the reason why some people were only seeing this issue after suspending is that the Surface firmware seems to set the ASPM bits to enabled after the device was suspended for some time (I assume it happens when the EC was in deep sleep) by itself, so if the distro or kernel version handles ASPM differently and maybe disables it by default, it would definitely be enabled after suspending and the issue would start to appear. Note that the errors don't have to begin with "Firmware wakeup failed" as described in Comment#74. Since it seems like we're dealing with a complete loss of communication with the card here, the error might as well be a command timeout. If there's anything else I can do to help resolving this issue let me know! [1] https://github.com/torvalds/linux/blob/master/drivers/acpi/pci_root.c#L464 Thanks, Jonas -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1730924 Title: Wifi does down "crash" in Surface Pro 4 Status in Linux: Confirmed Status in linux package in Ubuntu: Incomplete Bug description: I have a Surface Pro 4. The wifi works well in principle, but unfortunately it drops every x minutes. The only way to fix it I've found is to reboot the computer. lsb_release -rd Description: Ubuntu 17.10 Release: 17.10 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-16-generic 4.13.0-16.19 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: predatux 1537 F.... pulseaudio CurrentDesktop: KDE Date: Wed Nov 8 10:41:26 2017 HibernationDevice: RESUME=UUID=147af4ba-a4ce-41fe-a176-b36a1f6a590b Lsusb: Bus 002 Device 002: ID 045e:090c Microsoft Corp. Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 045e:07e8 Microsoft Corp. Bus 001 Device 003: ID 1286:204c Marvell Semiconductor, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Microsoft Corporation Surface Pro 4 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic root=UUID=125200b0-7377-4985-a217-15503781a525 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-16-generic N/A linux-backports-modules-4.13.0-16-generic N/A linux-firmware 1.169 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2017-10-22 (16 days ago) dmi.bios.date: 02/24/2017 dmi.bios.vendor: Microsoft Corporation dmi.bios.version: 106.1624.768 dmi.board.name: Surface Pro 4 dmi.board.vendor: Microsoft Corporation dmi.chassis.type: 9 dmi.chassis.vendor: Microsoft Corporation dmi.modalias: dmi:bvnMicrosoftCorporation:bvr106.1624.768:bd02/24/2017:svnMicrosoftCorporation:pnSurfacePro4:pvrD0B08F1C03P38:rvnMicrosoftCorporation:rnSurfacePro4:rvr:cvnMicrosoftCorporation:ct9:cvr: dmi.product.family: Surface dmi.product.name: Surface Pro 4 dmi.product.version: D:0B:08F:1C:03P:38 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1730924/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
