<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NVD9] xrandr no output to DisplayPort with GeForce GT 520M." href="https://bugs.freedesktop.org/show_bug.cgi?id=89484#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NVD9] xrandr no output to DisplayPort with GeForce GT 520M." href="https://bugs.freedesktop.org/show_bug.cgi?id=89484">bug 89484</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>Could you supply a dmesg from a boot with nouveau.debug=trace drm.debug=0xe where you try to activate the DP screen? It's unclear whether your vbios issue is related to your DP problems. Additionally, can you confirm that you've properly set up the provider stuff as per <a href="http://nouveau.freedesktop.org/wiki/Optimus/">http://nouveau.freedesktop.org/wiki/Optimus/</a> to be able to use reverse prime? (I guess if it shows up in xrandr, that's a pretty good sign.) Lastly, the reason for the VBIOS errors is that we hit unexpected opcodes in some scripts. Seeing what the blob does would be instructional. If possible, please produce a mmiotrace of nvidia's driver. See <a href="https://wiki.ubuntu.com/X/MMIOTracing">https://wiki.ubuntu.com/X/MMIOTracing</a> for a quick guide.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>