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(+)
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 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
linux-stable-mirror@lists.linaro.org
-
Hamza Mahfooz -
Harry Wentland -
Ville Syrjälä