Adding the pci=noaer boot option solves the problem.

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Reopening this now for F26. 

Same problem with the log being filled with messages on a fully patched O/S. 

The machine does boot and act reasonably normal, but during the initial dnf -y update operation using the wireless NIC, I noticed it would periodically fail to download and I could see the wireless icon in the upper right corner fade and turn into a question mark as it did so. Sometimes it would resume, but most of the time the dnf would time out and I'd wait a minute to restart it and it would pick up where it left off. There's definitely something wrong with the wireless NIC driver as when the box is booted to Windows, it works flawlessly.

kernel 4.11.11-300.fc26.x86_64

If I turn the use of the wireless NIC off via setup and then boot the box, there are no journal errors recorded that I can see after watching journalctl -f for 30 seconds.

If I then turn the use of the wireless NIC on in setup, the journal is immediately flooded with messages. If in the same boot session I then turn the NIC off again, the flood of messages slows down to 1 every 5 seconds.

If I reboot and supply the "noaer" option for the kernel, the journal has the pcieport errors occurring at a rate of 1 every 5 seconds even with the wireless NIC turned off in setup. If I turn the NIC on in setup, the flood of messages is immediate. If I turn the NIC Off in setup, the rate of messages returns to 1 every 5 seconds.

The ID is always 00e5 (Receiver ID) as shown in the initial post. Apparently, noaer does nothing to alter the situation.

The Priority and Severity options on this page don't seem to work but this bug makes the box unusable because the wireless is unreliable.

I've had this box waiting for F26 since I initially reported the problem when I installed F25 and that O/S had so many issues I gave up on it.

Attaching a modified log file for a few hours starting with today boot. 

The journal is flooded with the following messages endless repeated, so I removed them from the attached file: 
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e5(Receiver ID)
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5:   device [8086:9d15] error status/mask=00000001/00002000
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5:    [ 0] Receiver Error         (First)
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5: AER: Multiple Corrected error received: id=00e5
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5: can't find device of ID00e5
Jul 30 06:49:00 windows.private.ycc kernel: pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
J

The attached file shows the sequence of events without the above lines cluttering the display.

Created attachment 1306662 [details]
Journal log with repetitive clutter removed

Problem persists with kernel 4.12.5

Can I get some acknowledgement that someone has noticed this issue or is the fact that it was closed for no apparent reason months ago when it was happening on F25 some indicator that no one is ever going to look at this.

Same here with F27 on a Dell XPS13 9360.

My journal is flooded with this trace:

[18707.129241] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4
[18707.129265] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID)
[18707.129268] pcieport 0000:00:1c.4:   device [8086:9d14] error status/mask=00001000/00002000
[18707.129270] pcieport 0000:00:1c.4:    [12] Replay Timer Timeout

Oups, forgot my lspci output:

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Device 5926 (rev 06)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 03)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015]
02:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015]
02:01.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015]
02:02.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015]
39:00.0 USB controller: Intel Corporation DSL6340 USB 3.1 Controller [Alpine Ridge]
3a:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
3c:00.0 Non-Volatile memory controller: Device 1c5c:1284

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale. The kernel moves very fast so bugs may get fixed as part of a kernel update. Due to this, we are doing a mass bug update across all of the Fedora 26 kernel bugs.
 
Fedora 26 has now been rebased to 4.15.4-200.fc26.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you have moved on to Fedora 27, and are still experiencing this issue, please change the version to Fedora 27.
 
If you experience different issues, please open a new bug report for those.

This is happening to me on F27. Can someone change the version to Fedora 27?

4.15.10-300.fc27.x86_64

Dell XPS 15 9560

lspci:
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 05)
00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 05)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
00:1c.1 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #2 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)
00:1d.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #13 (rev f1)
00:1d.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #15 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] (rev a1)
02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
04:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961

The dmesg flood is this: 

[ 2100.452764] pcieport 0000:00:1d.0: AER: Corrected error received: id=00e8
[ 2100.452781] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e8(Transmitter ID)
[ 2100.452793] pcieport 0000:00:1d.0:   device [8086:a118] error status/mask=00001000/00002000
[ 2100.452802] pcieport 0000:00:1d.0:    [12] Replay Timer Timeout

I have managed to make the flooding go away by adding  pci=nommconf to my kernel boot line in grub.

This might be related to the fact that this system has a NVMe disk (see https://unix.stackexchange.com/questions/327730/what-causes-this-pcieport-00000003-0-pcie-bus-error-aer-bad-tlp)

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