[PATCH] drm: Add EDID_QUIRK_FORCE_REDUCED_BLANKING for ASUS VW222S

[Florian Mickler]

Hi all!

On Wed, 15 Aug 2012 17:40:40 +0200
Paul Menzel <paulepanter at users.sourceforge.net> wrote:

> Date: Wed, 8 Aug 2012 23:12:19 +0200
> 
> Connecting an ASUS VW222S [1] over VGA a garbled screen is shown with
> vertical stripes in the top half.
> 

This patch, which was merged in v3.6-rc4, makes the image on my ASUS
VW222U ca. 1 inch too wide left/right and top/bottom.  The effect is as
if the image was zoomed (bigger, more pixely).

Reverting it fixes the problem. 

The Monitor is connected via VGA, but also has a DVI interface.

Maybe the quirk-apply criteria is too unspecific? 

Regards,
Flo

> ---
>  drivers/gpu/drm/drm_edid.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 75e252e..102346d 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -87,6 +87,9 @@ static struct edid_quirk {
>  	int product_id;
>  	u32 quirks;
>  } edid_quirk_list[] = {
> +	/* ASUS VW222S */
> +	{ "ACI", 22a2, EDID_QUIRK_FORCE_REDUCED_BLANKING },
> +
>  	/* Acer AL1706 */
>  	{ "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 },
>  	/* Acer F51 */