On Thursday, July 14, 2016 01:52:18 PM Pali Rohár wrote:

On Tuesday 05 July 2016 14:00:58 Pali Rohár wrote:

quoted

On Tuesday 05 July 2016 13:56:58 Pali Rohár wrote:

quoted

On Tuesday 05 July 2016 13:51:42 Mika Westerberg wrote:

quoted

So are you able to test what happens when you unload the driver?

As I wrote in previous email, I do not own these EliteBooks anymore,
so cannot test it. Just have DSDT dump...

What about contacting last contributors to hp_accel.c driver? They 
probably could test i801 changes if accelerometer still works.

Or another option how to test this: Use acpi_call module which exports
file /proc/acpi/call which can be used to issue ACPI method call from
userspace.

If there are problems, there will be errors in dmesg or return value
from /proc/acpi/call is some error...

That is plain dangerous, because some objects may not be evaulated without
preparation.

We had something like that before and dropped it.

We have an AML debugger in the kernel now, though, which in principle may
be used for such diagnostics I think.

Thanks,
Rafael