<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL] SYSTEM HANG on boot-up" href="https://bugs.freedesktop.org/show_bug.cgi?id=101745#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL] SYSTEM HANG on boot-up" href="https://bugs.freedesktop.org/show_bug.cgi?id=101745">bug 101745</a> from <a class="email" href="mailto:didierg-divers@orange.fr" title="Didier G <didierg-divers@orange.fr>"> Didier G</a> <pre>According <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1463085">https://bugzilla.redhat.com/show_bug.cgi?id=1463085</a> and <a href="https://bugzilla.kernel.org/show_bug.cgi?id=196233">https://bugzilla.kernel.org/show_bug.cgi?id=196233</a> it seems this problem is reported only on Asus laptop UX305UA, UX305U and UX306U In my case I have UX305UA and I did not have any problem with kernel 4.11.4 and previous. The problem has been introduced by kernel 4.11.5 and following. I am affirmative about that. I attach journalctl of failing boot with kernel 4.11.12 with parameter drm.debug=0xe on grub boot options. Message "[drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 31: Can't calculate constants, dotclock = 0!" is present since 4.11.5</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>