Samuel Thibault, le dim. 03 janv. 2021 12:25:16 +0100, a ecrit:
> Vidya Sagar, le dim. 03 janv. 2021 12:15:14 +0530, a ecrit:
> > Is it possible to share the output of 'sudo lspci -vv'?
> 
> Here it is.

This was with a linux 5.10.0 kernel; with the ubuntu Linux
5.0.0-1037-oem-osp1 kernel shipped with the computer, with which I have
not yet seeing such errors, I am getting the attached lspci -vv. Notably
one can see these differences (5.10.0 above, 5.0.0-1037-oem-osp1 below)

02:00.0 Non-Volatile memory controller: Sandisk Corp WD Black SN750 / PC SN730 NVMe SSD (prog-if 02 [NVM Express])
[...]

	Capabilities: [c0] Express (v2) Endpoint, MSI 00
[...]
		DevSta:	CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
vs
		DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr- TransPend-       

	Capabilities: [100 v2] Advanced Error Reporting    
[...]
		CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr- 
vs
		CESta:  RxErr+ BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-


	Capabilities: [900 v1] L1 PM Substates
[...]
		L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1- ASPM_L1.2+ ASPM_L1.1-
		           T_CommonMode=0us LTR1.2_Threshold=163840ns
vs
		L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1- ASPM_L1.2+ ASPM_L1.1-
		           T_CommonMode=0us LTR1.2_Threshold=81920ns


but also on the bridge leading to the NVME:

00:1d.0 PCI bridge: Intel Corporation Device 02b4 (rev f0) (prog-if 00 [Normal decode])
[...]
	BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
vs
	BridgeCtl: Parity- SERR- NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
[

	Capabilities: [200 v1] L1 PM Substates
[...]
		L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1- ASPM_L1.2+ ASPM_L1.1-
			T_CommonMode=40us LTR1.2_Threshold=163840ns
vs
		L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1- ASPM_L1.2+ ASPM_L1.1-
			T_CommonMode=40us LTR1.2_Threshold=8192ns

Possibly these could explain the difference?

Samuel