linux-kernel - Re: DDC on Thinkpad x220

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Message-ID: <87eezwdctl.fsf@intel.com>
Date:   Tue, 01 Oct 2019 12:39:34 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Pavel Machek <pavel@....cz>,
        kernel list <linux-kernel@...r.kernel.org>,
        intel-gfx@...ts.freedesktop.org, rodrigo.vivi@...el.com,
        joonas.lahtinen@...ux.intel.com
Subject: Re: DDC on Thinkpad x220

On Mon, 30 Sep 2019, Pavel Machek <pavel@....cz> wrote:
> Hi!
>
> Thinkpad X220 should be new enough machine to talk DDC to the
> monitors, right? And my monitor has DDC enable/disable in the menu, so
> it should support it, too...
>
> But I don't have /dev/i2c* and did not figure out how to talk to the
> monitor. Is the support there in the kernel? What do I need to enable
> it?

# modprobe i2c-dev

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center