[Bug 1990272] Re: PCIe Bus Error: Uncorrected, Transaction Layer, device [8086:51b0],AER UnsupReq

I have also experienced a similar issue with my new Thinkpad P1 Gen6.
Since I am dependent on the new Thunderbolt ports for my videography
work, the laptop is essentially useless now. Lenovo replaced the
motherboard yesterday and there was no change in the behaviour. On
doing some research, I see that similar issues have occurred for a long
time. In any case, the key lines in my dmesg, leading to failure are:

[ 125.804774] pcieport 0000:00:1d.0: AER: Uncorrectable (Fatal) error message received from 0000:20:00.0
[ 125.804793] pcieport 0000:20:00.0: AER: PCIe Bus Error: severity=Uncorrectable (Fatal), type=Inaccessible, (Unregistered Agent ID)
[ 125.804803] thunderbolt 0000:22:00.0: AER: can't recover (no error_detected callback)
[ 125.804807] xhci_hcd 0000:48:00.0: AER: can't recover (no error_detected callback)
[ 125.937470] pcieport 0000:00:1d.0: AER: Root Port link has been reset (0)
[ 125.937563] pcieport 0000:00:1d.0: AER: device recovery failed

....

Then the system simply gives up as follows:

[ 149.485418] xhci_hcd 0000:48:00.0: xHCI host controller not responding, assume dead
[ 149.485440] xhci_hcd 0000:48:00.0: HC died; cleaning up

Incidently, I created a bootable Windows disk today and confirmed that
this issue is only related to Linux.

I have also tried updated kernels, 6.8.8 and now 6.8.10 and the issue is
still present.

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https://bugs.launchpad.net/bugs/1990272

Title:
PCIe Bus Error: Uncorrected, Transaction Layer, device [8086:51b0],AER
UnsupReq

Status in linux package in Ubuntu:
Confirmed

Bug description:
My dmesg is getting spammed by these AER errors. The laptop (Lenovo X1
Extreme Gen 5, Intel Core i7-12700H) is otherwise working fine.

The errors come in random waves of 60..160 back-to-back errors with an
interval of 130..140 microseconds.

Device [8086:51b0] is the PCI/thunderbolt bridge.

[ 20.086628] pcieport 0000:00:1d.0: AER: Uncorrected (Non-Fatal) error received: 0000:00:1d.0
[ 20.086671] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID)
[ 20.086680] pcieport 0000:00:1d.0: device [8086:51b0] error status/mask=00100000/00004000
[ 20.086688] pcieport 0000:00:1d.0: [20] UnsupReq (First)
[ 20.086694] pcieport 0000:00:1d.0: AER: TLP Header: 34000000 20000052 00000000 00000000
[ 20.086810] thunderbolt 0000:22:00.0: AER: can't recover (no error_detected callback)
[ 20.086846] xhci_hcd 0000:56:00.0: AER: can't recover (no error_detected callback)
[ 20.086878] pcieport 0000:00:1d.0: AER: device recovery failed
[ 20.106033] pcieport 0000:00:1d.0: AER: Multiple Uncorrected (Non-Fatal) error received: 0000:00:1d.0
[ 20.106082] pcieport 0000:00:1d.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID)
[ 20.106093] pcieport 0000:00:1d.0: device [8086:51b0] error status/mask=00100000/00004000
[ 20.106101] pcieport 0000:00:1d.0: [20] UnsupReq (First)
[ 20.106108] pcieport 0000:00:1d.0: AER: TLP Header: 34000000 20000052 00000000 00000000
[ 20.106219] thunderbolt 0000:22:00.0: AER: can't recover (no error_detected callback)
[ 20.106257] xhci_hcd 0000:56:00.0: AER: can't recover (no error_detected callback)
[ 20.106301] pcieport 0000:00:1d.0: AER: device recovery failed

Another wave was at 418s, 440s, 1168s, etc.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-48-generic 5.15.0-48.54
ProcVersionSignature: Ubuntu 5.15.0-48.54-generic 5.15.53
Uname: Linux 5.15.0-48-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: me 1827 F.... pulseaudio
/dev/snd/controlC0: me 1827 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Tue Sep 20 13:34:43 2022
InstallationDate: Installed on 2022-08-31 (19 days ago)
InstallationMedia: Kubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
MachineType: LENOVO 21DE001QMH
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-48-generic root=UUID=d4a7fdda-30e3-439b-b327-e87d7b2bc81e ro
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.15.0-48-generic N/A
linux-backports-modules-5.15.0-48-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3.5
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2022
dmi.bios.release: 1.8
dmi.bios.vendor: LENOVO
dmi.bios.version: N3JET24W (1.08 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21DE001QMH
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76530 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.5
dmi.modalias: dmi:bvnLENOVO:bvrN3JET24W(1.08):bd07/21/2022:br1.8:efr1.5:svnLENOVO:pn21DE001QMH:pvrThinkPadX1ExtremeGen5:rvnLENOVO:rn21DE001QMH:rvrSDK0T76530WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21DE_BU_Think_FM_ThinkPadX1ExtremeGen5:
dmi.product.family: ThinkPad X1 Extreme Gen 5
dmi.product.name: 21DE001QMH
dmi.product.sku: LENOVO_MT_21DE_BU_Think_FM_ThinkPad X1 Extreme Gen 5
dmi.product.version: ThinkPad X1 Extreme Gen 5
dmi.sys.vendor: LENOVO

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