<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [KBL] [drm:skl_set_cdclk] *ERROR* failed to inform PCU about cdclk change" href="https://bugs.freedesktop.org/show_bug.cgi?id=99345#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [KBL] [drm:skl_set_cdclk] *ERROR* failed to inform PCU about cdclk change" href="https://bugs.freedesktop.org/show_bug.cgi?id=99345">bug 99345</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>(In reply to Andrey from <a href="show_bug.cgi?id=99345#c4">comment #4</a>) > Created <a href="attachment.cgi?id=128863" name="attach_128863" title="dmesg_patch_applied_v2">attachment 128863</a> <a href="attachment.cgi?id=128863&action=edit" title="dmesg_patch_applied_v2">[details]</a> > dmesg_patch_applied_v2 > > This new patch has a minor conflict against 4.9.2 kernel (I fixed it up > locally), > but it fixes the issue for me. > Also, I don't see FIFO underruns anymore, so > <a class="bz_bug_link bz_status_NEW " title="NEW - [KBL] [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun" href="show_bug.cgi?id=99344">https://bugs.freedesktop.org/show_bug.cgi?id=99344</a> probably should be closed > too. Ok, please let me know if you see the 'failed to inform PCU' error with this patch after longer use. Would be also good to know the maximum poll duration you see based on the timestamp diff of the lines like the following two: [ 65.704858] [drm:skl_pcode_request] PCODE timeout, retrying with preemption disabled [ 65.707102] [drm:intel_update_cdclk] Current CD clock rate: 337500 kHz, VCO: 8100000 kHz, ref: 24000 kHz In your first dmesg it was ~10ms in the second ~4ms. Thanks.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>