From: Lyude Paul lyude@redhat.com
commit 8ba9249396bef37cb68be9e8dee7847f1737db9d upstream.
As it turns out: while Nvidia does actually have interlacing knobs on their GPU still pretty much no current GPUs since Volta actually support it. Trying interlacing on these GPUs will result in NVDisplay being quite unhappy like so:
nouveau 0000:1f:00.0: disp: chid 0 stat 00004802 reason 4 [INVALID_ARG] mthd 2008 data 00000001 code 00080000 nouveau 0000:1f:00.0: disp: chid 0 stat 10005080 reason 5 [INVALID_STATE] mthd 0200 data 00000001 code 00000001
So let's fix this by following the same behavior Nvidia's driver does and disable interlacing entirely.
Signed-off-by: Lyude Paul lyude@redhat.com Cc: stable@vger.kernel.org Reviewed-by: Karol Herbst kherbst@redhat.com Link: https://patchwork.freedesktop.org/patch/msgid/20220816180436.156310-1-lyude@... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/nouveau/nouveau_connector.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -503,7 +503,8 @@ nouveau_connector_set_encoder(struct drm connector->interlace_allowed = nv_encoder->caps.dp_interlace; else - connector->interlace_allowed = true; + connector->interlace_allowed = + drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA; connector->doublescan_allowed = true; } else if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||