Bjorn Helgaas

The "pcie_aspm=off" kernel parameter hides a problem. I would really like to fix the underlying problem so the parameter isn't needed. If anybody is willing to help fix it, please open a bug report at https://bugzilla.kernel.org/, product Drivers/PCI, mention the hardware platform, and attach: complete dmesg log (I assume this will include some Correctable Errors) output of "sudo lspci -vv" Try booting with the "pcie_aspm=off" kernel parameter to see if it makes any difference. If it does, please also attach similar dmesg and lspci output for this boot. This seems similar to https://bugzilla.kernel.org/show_bug.cgi?id=215027, which we originally thought was related to Intel VMD and/or the Samsung NVMe device you have, but I now suspect we might have an ASPM configuration problem.

This may be related to https://bugzilla.kernel.org/show_bug.cgi?id=209725 If you can run a v5.5 or newer kernel, try this to see if it's a workaround: # echo 0 > /sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/link/l1_aspm More gory details at: https://lore.kernel.org/r/[email protected] If you can reproduce this problem and the workaround above works, please let us know at [email protected]. We would really like help to get this fixed. The output of "sudo lspci -vv" would be helpful.