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
