[ltp] Thinkpad T460s freezing on lid close

[Yrjan Skrimstad]

A small heads-up. There seems to be a problem with the Thinkpad T460s
freezing on lid close. This only happens when running on battery, when
running on AC it will not freeze. I believe it to be ACPI-related as it
stops happening when I boot with "acpi=off" as a kernel parameter. All
this is happening with latest mainline kernel and all other kernels I
have tried.

I have posted a bug report,
https://bugzilla.kernel.org/show_bug.cgi?id=113551, that might be of
interest to any other T460s users.

I have tested a bit to see if I can find a workaround other than
suspending by way of "systemctl suspend" before closing the lid, but I
have yet to find one.