Re: Regression in thinkpad-acpi events

[Tom Gundersen]

Hi Henrique,

On Wed, Nov 16, 2011 at 12:03 AM, Henrique de Moraes Holschuh
<hmh@xxxxxxxxxx> wrote:
>> As requested:
>> # grep . /sys/bus/platform/devices/thinkpad*/*
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_enable:1
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_mask:0x008dffff
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_poll_freq:10
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_radio_sw:1
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_recommended_mask:0x008dffff
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_report_mode:1
>> /sys/bus/platform/devices/thinkpad_acpi/hotkey_source_mask:0x00000000
>
> Well, the driver has connected to the firmware, and should be working. ÂAnd
> there were no changes to the code from v3.0 to v3.1.1. ÂSo, it is either a
> bug in something else, a problematic interaction of the driver with
> something else, or a latent thinkpad-acpi bug that some change elsewhere has
> exposed.
>
> Are the events reported by acpi_listen from arch-linux exactly the same in
> v3.0.9 and v3.1.1 ? ÂI know some events are missing in your v3.1.1, but I am
> interested in the ones that do get reported.
>
> Although you really should be using the input device for the hotkeys, and
> not any of the 0x10xx events. ÂThose are driver-specific and deprecated, it
> is all explained in Documentation/laptops/thinkpad-acpi.txt. ÂSo, it really
> might mean that you have something in userspace reading that input device
> and synthesizing the ACPI HKEY events thinkpad-acpi deprecated for a long
> time now. ÂI know some distros did that instead of switching to an
> input-device-based hotkey daemon. ÂPlease check for that possibility,
> that daemon could be the one having problems with 3.1.1...

It looks like my problem was something else. We don't do anything to
synthesize the ACPI HKEY events (AFAIK), so I believe that KDE (which
I am using) should be using the input events and that the HKEY stuff
does not matter.

I am still trying to figure out why my laptop does not always go to
sleep when I close my lid, but it turns out that I cannot reproduce it
reliably so it is taking me some time.

As to the original report about the change in HKEY events, this is
(probably) due to PROCFS_ACPI being disabled in the Arch kernel as of
3.1.

Cheers,

Tom
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/