Re: ACPI interrupt storm on ThinkPad T480s

On April 26, 2018 2:40 PM, Matthieu Guegan <matthieu@guegan.ch> wrote:

> Hi,
>
> Just want to add the X1 Carbon Gen 6th to the list. Same problem when
>
> plug in a thunderbolt device.
>

We should confirm that it's the same bug.

Here's what I did on the T480s:

# pkg_add acpica
$ cp -R /var/db/acpi /tmp
$ iasl -d /tmp/acpi/*

If it's the same bug, you should find something like this block
of code in the file /tmp/acpi/DSDT.dsl
...
If ((TBTS == 0x01))
{
Acquire (OSUM, 0xFFFF)
\_GPE.TINI (TBSE)
If ((TBMP == 0x01))
{
\_GPE.TINI (TBS1)
}

Release (OSUM)
}
...

If this bug affects their flagship device, then hopefully it will be
easier to convince them to fix it.