I have a Dell Inspiron 5570 with Intel i7-8550U CPU. I face the same
problem with the Ubuntu 16.04 OEM install and a fresh Kubuntu 18.04
install.


22/7/18 3:01 Μ.Μ.       kernel  pcieport 0000:00:1c.5: AER: Corrected error 
received: id=00e5
22/7/18 3:01 Μ.Μ.       kernel  pcieport 0000:00:1c.5: PCIe Bus Error: 
severity=Corrected, type=Data Link Layer, id=00e5(Transmitter ID)
22/7/18 3:01 Μ.Μ.       kernel  pcieport 0000:00:1c.5:   device [8086:9d15] 
error status/mask=00001000/00002000
22/7/18 3:01 Μ.Μ.       kernel  pcieport 0000:00:1c.5:    [12] Replay Timer 
Timeout  


$ lspci -tv
-[0000:00]-+-00.0  Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor 
Host Bridge/DRAM Registers
           +-02.0  Intel Corporation UHD Graphics 620
           +-04.0  Intel Corporation Skylake Processor Thermal Subsystem
           +-14.0  Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller
           +-14.2  Intel Corporation Sunrise Point-LP Thermal subsystem
           +-15.0  Intel Corporation Sunrise Point-LP Serial IO I2C Controller 
#0
           +-16.0  Intel Corporation Sunrise Point-LP CSME HECI #1
           +-17.0  Intel Corporation Sunrise Point-LP SATA Controller [AHCI 
mode]
           +-1c.0-[01]----00.0  Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT 
[Radeon R7 M260/M265 / M340/M360 / M440/M445]
           +-1c.4-[02]----00.0  Realtek Semiconductor Co., Ltd. RTL8101/2/6E 
PCI Express Fast/Gigabit Ethernet controller
           +-1c.5-[03]----00.0  Qualcomm Atheros QCA9377 802.11ac Wireless 
Network Adapter
           +-1f.0  Intel Corporation Device 9d4e
           +-1f.2  Intel Corporation Sunrise Point-LP PMC
           +-1f.3  Intel Corporation Sunrise Point-LP HD Audio
           \-1f.4  Intel Corporation Sunrise Point-LP SMBus

I haven't tried the pci=noaer solution yet. However, judging from
(https://www.kernel.org/doc/Documentation/admin-guide/kernel-
parameters.txt) that only disables the error reporting and thous is not
a proper fix.

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https://bugs.launchpad.net/bugs/1521173

Title:
  AER: Corrected error received: id=00e0

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