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drm: legacy: issue a NULL modeset on disable

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The DRM subsystem needs a NULL modeset for connectors which disappear
from the system to disable the hardware pipes, otherwise the pixels get
rendered but are sent nowhere.

The atomic backend does the equivalent by removing the properties and
issuing a commit.

Fixes #1706
This commit is contained in:
Rouven Czerwinski 2019-06-02 09:43:16 +02:00
parent 6dfe238ff1
commit 96e9c0f9c8
1 changed files with 6 additions and 0 deletions
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6
backend/drm/legacy.c
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@ -29,6 +29,12 @@ static bool legacy_conn_enable(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn, bool enable) {
int ret = drmModeConnectorSetProperty(drm->fd, conn->id, conn->props.dpms,
enable ? DRM_MODE_DPMS_ON : DRM_MODE_DPMS_OFF);
if (!enable) {
drmModeSetCrtc(drm->fd, conn->crtc->id, 0, 0, 0, NULL, 0,
NULL);
}
return ret >= 0;
}