<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVD9] Unable to start X on ThinkPad T420s laptop" href="https://bugs.freedesktop.org/show_bug.cgi?id=56615#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVD9] Unable to start X on ThinkPad T420s laptop" href="https://bugs.freedesktop.org/show_bug.cgi?id=56615">bug 56615</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>I wouldn't worry about that backtrace, it's related to something else I think. Would you mind switching to nouveau/master? You can just add it as a remote to your current git setup, no need to check out a whole new tree. Could you post a full dmesg from a nouveau/master kernel booted with "nouveau.debug=PDISP=debug"? The dmesg that you've already posted seems to suggest everything is broken (e.g. PDISP is disabled which is a very bad sign). Also, to be clear, if you boot with DP plugged in, and start X, then you get a hang, right? Does the whole system hang, or just the display? Can you ssh in? If you can ssh in, what happens when you try to turn stuff off/on with xrandr? (Obviously with DISPLAY=:0 so as to connect to the laptop's X.)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>