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SubjectRe: [PATCH] drm/edid: add 8 bpc quirk to the BenQ GW2765
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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
>
--
Hamza

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