Re: [PATCH 2/2] eeepc-wmi: Add no backlight quirk for Asus H87I-PLUS Motherboard

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 06/11/2014 06:03 PM, Matthew Garrett wrote:
> On Wed, 2014-06-11 at 15:57 +0200, Hans de Goede wrote:
>> Hi,
>>
>> On 06/10/2014 06:16 PM, Matthew Garrett wrote:
>>> On Thu, 2014-05-15 at 11:39 +0200, Hans de Goede wrote:
>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1097436
>>>
>>> I'm not especially keen on this - if this seems like a general problem,
>>> adding boards piecemeal to a DMI table will never solve it for most
>>> people. What does performing the backlight calls actually do?
>>
>> The user has reported no adverse effects from the backlight control being
>> present, other then gnome3 showing a brightness control in its system
>> menu which is undesirable on a desktop machine.
>
> Sorry, yeah, I wasn't clear. What results do we get from the calls? If
> they just return 0s then we should alter the driver to skip backlight
> registration in that case.

The acpi_video0 backlight interface reports a max_backlight of 100, so it
appears to be functional, unlike the asus-wmi interface which is present but
appears non functional.

Regards,

Hans