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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - resume from S3 slightly broken since kernel 3.10"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=77768#c7">Comment # 7</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - resume from S3 slightly broken since kernel 3.10"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=77768">bug 77768</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>Try:

diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index 3225d51..e8fdc79 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -2777,7 +2777,7 @@ sna_output_init(ScrnInfoPtr scrn, struct sna_mode *mode,
int num)

        /* stash the active CRTC id for our probe function */
        output->crtc = NULL;
-       if (compat_conn.conn.connection == DRM_MODE_CONNECTED)
+       if (compat_conn.conn.connection != DRM_MODE_DISCONNECTED)
                output->crtc = (void *)(uintptr_t)enc.crtc_id;</pre>
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