(In reply to Kieran Clancy from comment #125)
> Possible fix found by juanmanuel at:
>
> https://bugs.launchpad.net/ubuntu/+source/acpi/+bug/971061
>
> See comment numbers 100 through 103 there.
>
> I can confirm that this fix is working since I tried it 20 minutes ago.
>
> It seems that once a particular buffer fills up, no more events are
> generated. To fix this, it seems to be necessary to manually poll and clear
> this buffer so that new events are sent.
>
> I wonder if this can be handled better in the kernel, so that an external
> program is not needed? Also, rather than blindly ignoring built-up events,
> should the kernel be processing them in some way?
(In reply to Kieran Clancy from comment #125) /bugs.launchpad .net/ubuntu/ +source/ acpi/+bug/ 971061
> Possible fix found by juanmanuel at:
>
> https:/
>
> See comment numbers 100 through 103 there.
>
> I can confirm that this fix is working since I tried it 20 minutes ago.
>
> It seems that once a particular buffer fills up, no more events are
> generated. To fix this, it seems to be necessary to manually poll and clear
> this buffer so that new events are sent.
>
> I wonder if this can be handled better in the kernel, so that an external
> program is not needed? Also, rather than blindly ignoring built-up events,
> should the kernel be processing them in some way?
It seems to fix the problem on my NP550P5C too.