Re: [PATCH] drm/edid: add 8 bpc quirk to the BenQ GW2765

[Hamza Mahfooz]

On 10/13/23 06:30, Ville Syrjälä wrote:
> On Thu, Oct 12, 2023 at 02:49:27PM -0400, Hamza Mahfooz wrote:
> > The BenQ GW2765 reports that it supports higher (> 8) bpc modes, but
> > when trying to set them we end up with a black screen. So, limit it to 8
> > bpc modes.
>
> Bad cable/etc was ruled out as the cause?

Yup, the issue was also reproduced by two different people with same
aforementioned monitor.

> > Cc: stable@xxxxxxxxxxxxxxx # 6.5+
> > Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2610
> > Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
> > ---
> >   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 0454da505687..bca2af4fe1fc 100644
> > --- a/drivers/gpu/drm/drm_edid.c
> > +++ b/drivers/gpu/drm/drm_edid.c
> > @@ -123,6 +123,9 @@ static const struct edid_quirk {
> >   	/* AEO model 0 reports 8 bpc, but is a 6 bpc panel */
> >   	EDID_QUIRK('A', 'E', 'O', 0, EDID_QUIRK_FORCE_6BPC),
> >   
> > +	/* BenQ GW2765 */
> > +	EDID_QUIRK('B', 'N', 'Q', 0x78d6, EDID_QUIRK_FORCE_8BPC),
> > +
> >   	/* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */
> >   	EDID_QUIRK('B', 'O', 'E', 0x78b, EDID_QUIRK_FORCE_6BPC),
> >   
> > --
> > 2.42.0
--
Hamza