<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Trying to set mode 3840x2160 at 60 Hz results in a crash" href="https://bugs.freedesktop.org/show_bug.cgi?id=95392#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Trying to set mode 3840x2160 at 60 Hz results in a crash" href="https://bugs.freedesktop.org/show_bug.cgi?id=95392">bug 95392</a> from <a class="email" href="mailto:b52@reaktor42.de" title="Oli <b52@reaktor42.de>"> Oli</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=95392#c3">comment #3</a>) > [ 12.914535] [drm:intel_update_cdclk] Current CD clock rate: 450000 kHz > [ 91.861529] [drm:intel_dump_crtc_timings] crtc timings: 533280 3840 3848 > 3992 4000 2160 2214 2219 2222, type: 0x0 flags: 0x9 > > Your cdclk is too low for that mode. I have a branch which has the required > bits to adjust cdclk dynamically on SKL: > git://github.com/vsyrjala/linux.git skl_bxt_cdclk_part_2 > > Can you test with that branch? I did and it seems to works, at least the display didn't blank and xrandr reports 60 Hz. Though, I have no way to tell if this is really the case, because my display won't show this information. See the attached dmesg output for more information. I used the same drm.debug settings as before. PS: Is this fix going upstream some time?</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>