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backend/drm: fix black screens when enabling output
This patch fixes this failure: 01:57:16.642 [ERROR] [backend/drm/drm.c:360] Failed to page-flip output 'eDP-1': a page-flip is already pending 01:57:16.684 [ERROR] [backend/drm/drm.c:360] Failed to page-flip output 'eDP-1': a page-flip is already pending 01:57:16.684 [ERROR] [backend/drm/drm.c:732] Failed to initialize renderer on connector 'eDP-1': initial page-flip failed 01:57:16.684 [ERROR] [backend/drm/drm.c:805] Failed to initialize renderer for plane 01:57:16.684 [sway/config/output.c:423] Failed to commit output eDP-1 References: https://github.com/swaywm/sway/issues/5101
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1 changed files with 5 additions and 1 deletions
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@ -356,7 +356,11 @@ static bool drm_crtc_commit(struct wlr_drm_connector *conn, uint32_t flags) {
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static bool drm_crtc_page_flip(struct wlr_drm_connector *conn) {
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struct wlr_drm_crtc *crtc = conn->crtc;
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if (conn->pageflip_pending) {
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// wlr_drm_interface.crtc_commit will perform either a non-blocking
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// page-flip, either a blocking modeset. When performing a blocking modeset
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// we'll wait for all queued page-flips to complete, so we don't need this
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// safeguard.
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if (conn->pageflip_pending && !crtc->pending_modeset) {
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wlr_log(WLR_ERROR, "Failed to page-flip output '%s': "
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"a page-flip is already pending", conn->output.name);
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return false;
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