<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - 2560x1440 @144Hz graphic glitches and bad refresh rate" href="https://bugs.freedesktop.org/show_bug.cgi?id=93826#c57">Comment # 57</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - 2560x1440 @144Hz graphic glitches and bad refresh rate" href="https://bugs.freedesktop.org/show_bug.cgi?id=93826">bug 93826</a> from <a class="email" href="mailto:mkyahoooo@web.de" title="withoutaface <mkyahoooo@web.de>"> withoutaface</a> <pre>(In reply to iuno from <a href="show_bug.cgi?id=93826#c55">comment #55</a>) > Make sure to raise the DC clock above the default value, e.g. to 625 MHz > (value 62500) > > If you use amdgpu: in amdgpu_atombios.c adev->clock.default_dispclk > If you use radeon: in atombios_crtc.c rdev->clock.default_dispclk > > That should fix the broken image. To fix flickering, set mclk to high (echo > 1 > /sys/class/drm/card0/device/power_dpm_force_performance_level) Hello iuno, is there a easy way to achieve setting clock.default_dispclk to 625 Mhz? like setting dpm performance level to high? I'm using radeon open source driver with Asus R9 390X / MG279Q on Ubuntu 17.04. 120hz is working fine with dpm performace level high. 144hz has blurry image and one faulty line on the left side Thank you.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>