| Message ID | 20231012184927.133137-1-hamza.mahfooz@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/edid: add 8 bpc quirk to the BenQ GW2765 | expand |
On 2023-10-12 14:49, 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. > > Cc: stable@vger.kernel.org # 6.5+ > Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2610 > Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Harry > --- > 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), >
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? > > Cc: stable@vger.kernel.org # 6.5+ > Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2610 > Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> > --- > 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
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@vger.kernel.org # 6.5+ >> Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2610 >> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> >> --- >> 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 >
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),
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. Cc: stable@vger.kernel.org # 6.5+ Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2610 Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> --- drivers/gpu/drm/drm_edid.c | 3 +++ 1 file changed, 3 insertions(+)