On Wed, 9 Nov 2022 at 06:15, Tom Chung <chiahsuan.chung@xxxxxxx> wrote:
>
> From: Zhongwei Zhang <Zhongwei.Zhang@xxxxxxx>
>
> [Why]
> disable_vbios_mode_if_required() will set dpms_off to false
> during boot when pixel clk dismatches with driver requires.
> This will cause extra backlight on and off if OS call 2
> times setmode.
>
> [How]
> Set dpms_off to true to keep power_off and
> let OS control BL by display's powerState.
>
> Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
> Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
> Signed-off-by: Zhongwei Zhang <Zhongwei.Zhang@xxxxxxx>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> index 9c3704c4d7e4..9f42adc234e3 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
> @@ -1192,7 +1192,7 @@ static void disable_vbios_mode_if_required(
>
> if (pix_clk_100hz != requested_pix_clk_100hz) {
> core_link_disable_stream(pipe);
> - pipe->stream->dpms_off = false;
> + pipe->stream->dpms_off = true;
> }
> }
> }
> --
> 2.25.1
>
Hi, this patch gives me a blank screen when booting my Asus G513QY /
6800M. apart from the screen being of I can ssh in just fine
Reverting it puts things back to normal
Cheers
Mike
