<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - i915 module results in total lockups without any dmesg trace on a NP900X5N Kaby Lake machine" href="https://bugs.freedesktop.org/show_bug.cgi?id=109209#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - i915 module results in total lockups without any dmesg trace on a NP900X5N Kaby Lake machine" href="https://bugs.freedesktop.org/show_bug.cgi?id=109209">bug 109209</a> from <a class="email" href="mailto:jv1@home.nl" title="Jan <jv1@home.nl>"> Jan</a> <pre>A small update that might be of help. Yesterday I started the laptop with 'i915.modeset=0'. After booting into shell I used the laptop for hours, same as always when the i915 driver is 'disabled' (did some reading and testing with the laptop how the kernel, udev, block/devices, sys etc works; and how I can compile and install a single module, without the need of compiling the whole kernel). Then I removed the i915 driver with 'rmmod i915'. (required for the next step, otherwise it complains about 'File Exists'). Subsequently inserted the module with insmod -f /lib/modules/<version>/kernel/drivers/gpu/drm/i915/i915.ko. After inserting the module the screen changed and the machine kept working. However after some time the laptop hangs (repeated these steps a few times, same results). Also tested by removing the driver before the laptop hangs and see what happens. Unfortunately the machine does not switch back to the basic GUI :-( and I needed to connect via SSH. When I remove the module (via SSH) before the hang the machine keeps working. Furthermore I repeatedly removed (before an expected hang) and inserted the module. Every (re)insertion of the module seems to result in a 'reset' in time before a hang. In one occasion... the machine kept on running 15 minutes before a hang, but usually hangs much sooner. Tested also with: i915.modeset=1 nouveau.modeset=0 single debug drm.debug=14. Kept the machine almost an hour. In single mode it runs much longer. And tested with: i915.modeset=1 nouveau.modeset=0 debug drm.debug=14. Machine usually hangs within a few minutes.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>