On Ubuntu French forum, we made a link between the error message
PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e4(Receiver ID)
WIFI module and sky lake architecture. Not tested on kaby lake, no issues on haswell detected yet. The most common WIFI module linked to this issue is the rtl8723be (may be some others, not prooven)
I have seen this answer which is the most relevant for me, answered by C I king. Current workaround we apply is either pcie_aspm=off or pci=noaer parameter, which means either stopping the active state power management or stopping to report advanced errors.
Without one of these parameters, kern.log and syslog are flooded by this message. The rate has changed with the last updates (on 16.04) and on 18.04, we are talking about several GB in few 10 minutes. In addition to that, it appeared that on many computers (having sky lake architecture and rtl8723be module), live session cannot be started without one of these parameters.
We have tried several parameters set for the driver :
ips=0 fwlps=0 swlps=0 msi=0
ips=0 fwlps=0 swlps=0 msi=1
(sudo modprobe rtl8723be parameter_list)
We also tried the driver from github
No success to remove GRUB parameter. (Only to remove the WIFI driver).
Is there a known way (parameter or new driver) to avoid the GRUB parameter?
Thanks for the answer