linux-kernel - Re: Bogus video resolution in Linux 3.5-rc4

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Date:	Mon, 02 Jul 2012 15:46:29 -0400
From:	Adam Jackson <ajax@...hat.com>
To:	Takashi Iwai <tiwai@...e.de>
CC:	Sven Joachim <svenjoac@....de>, dri-devel@...ts.freedesktop.org,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Dave Airlie <airlied@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: Bogus video resolution in Linux 3.5-rc4

On 6/26/12 3:21 AM, Takashi Iwai wrote:

> From: Takashi Iwai <tiwai@...e.de>
> Subject: [PATCH] drm: edid: Don't add inferred modes with higher resolution
>
> When a monitor EDID doesn't give the preferred bit, driver assumes
> that the mode with the higest resolution and rate is the preferred
> mode.  Meanwhile the recent changes for allowing more modes in the
> GFT/CVT ranges give actually more modes, and some modes may be over
> the native size.  Thus such a mode would be picked up as the preferred
> mode although it's no native resolution.
>
> For avoiding such a problem, this patch limits the addition of
> inferred modes by checking not to be greater than other modes.
> Also, it checks the duplicated mode entry at the same time.

This is a little aggressive on CRTs, but whatever, better than what's there.

Reviewed-by: Adam Jackson <ajax@...hat.com>

- ajax
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