Re: [9front] nvme driver crashy on a shitty OEM drive

[hiro <23hiro@gmail.com>]

i generally wouldn't bother trying to understand linux quirks too
hard, they are often stupid and wrong, too.

i had problems with some nvme drives out of the box from the vendor on
the lenovo thinkcentre, and it didn't go away until today with an
up-to-date ubuntu either.

replacing the nvme drive to another brand clearly changes the
frequency of my pcie bus crashing the system.

you'll have to do it yourself. linux is misleading.

On 7/21/21, cinap_lenrek@felloff.net <cinap_lenrek@felloff.net> wrote:
> that linux thread hints on some physical layer issues... they'r trying
> to reset the whole pci bus to force it to recover and tuning some timing
> delay loops...
>
> we do not have a pci error handler except generic machine check
> handler, so we might just freeze up instead of seeing the errors
> linux prints.
>
> it is really odd, especially as it starts to not hang when you
> boot with usb disk inserted.
>
> it might well be a timing dependency right there.
>
> for one, i'd suggest to take the ahci out of the equation by setting
> *noahci=1 in 9boot > prompt before booting the kernel.
>
> then maybe take a look at the linux quirk routine in detail.
> (i have not dont yet).
>
> --
> cinap
>