From 46dc4100d66567f77a413627a0a0b046ccf8094b Mon Sep 17 00:00:00 2001 From: Scott Anderson Date: Mon, 24 Jun 2019 13:52:23 +1200 Subject: backend/drm: Exit-early if 0 crtcs This fixes an assertion failure if we're using a device that has 0 crtcs as a renderer. This would happen on some laptops with discrete GPUs. --- backend/drm/drm.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'backend') diff --git a/backend/drm/drm.c b/backend/drm/drm.c index 7ff8c7f5..a2bfb261 100644 --- a/backend/drm/drm.c +++ b/backend/drm/drm.c @@ -1140,6 +1140,14 @@ static uint32_t get_possible_crtcs(int fd, drmModeRes *res, } void scan_drm_connectors(struct wlr_drm_backend *drm) { + /* + * This GPU is not really a modesetting device. + * It's just being used as a renderer. + */ + if (drm->num_crtcs == 0) { + return; + } + wlr_log(WLR_INFO, "Scanning DRM connectors"); drmModeRes *res = drmModeGetResources(drm->fd); -- cgit v1.2.3