Re: [PATCH v2] PCI: Add quirk to disable ASPM L1 for Sandisk SN740 NVMe SSDs

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 12/1/25 7:48 AM, Val Packett wrote:
> 
> On 11/25/25 2:21 AM, Manivannan Sadhasivam wrote:
>> [..]
>> There are a couple of points that made me convince myself:
>>
>> * Other X1E laptops are working fine with ASPM L1.
>> * This laptop has WCN785x WiFi/BT combo card connected to the other controller
>> instance and L1 is working fine for it.
>> * There is no known issue with ASPM L1 in X1E chipsets.
>>
>> Because of these, I was so certain that the NVMe is the fault here.
> 
> There is *a* known issue with ASPM L1 on X1E, reported by maaaany users on #aarch64-laptops, that we discussed in another thread..
> 
> But it is a full system freeze, **not** a correctable AER message, and it definitely happens with a bunch of various SSDs on various laptops. I personally have had it happen both with the SN740 and an SK Hynix drive, on a Latitude 7455. It's an SSD-only issue (disabling ASPM just for the drive, but keeping it on for the WiFi, was enough to get to month-long uptime) but not specific to any SSD model.

Are the steps to reproduce roughly

* boot without disabling ASPM
* wait
* system reboots on its own (or just freezes?)

?

Konrad