Dell Inspiron P74G, Kubuntu 19.04 Disco, kernel 5.0.0-13-generic.
I'm affected as well by this bug, with ~50 lines per minute of errors in
the syslog.
I noticed only recently the issue on my Kubuntu 18.04 LTS setup (say,
this October 2019). Since then I upgraded to 19.04, but with no
improvement. My errors in dmesg are of the same form as stated above,
with two recurring types of error statuses:
pcieport 0000:00:1c.4: AER: Corrected error received: 0000:00:1c.4
pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link
Layer, (Transmitter ID)
pcieport 0000:00:1c.4: device [8086:9d14] error status/mask=00001000/00002000
pcieport 0000:00:1c.4: [12] Timeout
pcieport 0000:00:1c.4: AER: Corrected error received: 0000:00:1c.4
pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link
Layer, (Transmitter ID)
pcieport 0000:00:1c.4: device [8086:9d14] error status/mask=00003000/00002000
pcieport 0000:00:1c.4: [12] Timeout
That pcie port is shown to be connected to the Atheros WiFi of the
laptop:
+-1c.4-[02]----00.0 Qualcomm Atheros QCA6174 802.11ac Wireless Network
Adapter
The output of lshw for it is:
*-pci:1
description: PCI bridge
product: Sunrise Point-LP PCI Express Root Port #5
vendor: Intel Corporation
physical id: 1c.4
bus info: pci@0000:00:1c.4
version: f1
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master
cap_list
configuration: driver=pcieport
resources: irq:123 memory:d5000000-d51fffff
*-network
description: Wireless interface
product: QCA6174 802.11ac Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 32
serial: [edited for privacy]
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet
physical wireless
configuration: broadcast=yes driver=ath10k_pci
driverversion=5.0.0-13-generic firmware=RM.4.4.1.c2-00057-QCARMSWP-1
ip=192.168.0.71 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:131 memory:d5000000-d51fffff
I cannot find an APSM disable option in my BIOS setup.
A guy named Dennis E. Mungai digged into the issue last year (link
below), and his temporary fix (turning off the report bit for AER
Corrected errors) worked for me, without the need to turn off AER for
the whole system.
https://gist.github.com/Brainiarc7/3179144393747f35e5155fdbfd675554
I find interesting that for most of us this issue affects laptop WiFi
cards from different vendors.
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https://bugs.launchpad.net/bugs/1521173
Title:
AER: Corrected error received: id=00e0
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