[Bug 108020] Screen artifacting with 4.18+ kernels on AMD Radeon Vega 64 & 1440p 120hz+ monitors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108020

            Bug ID: 108020
           Summary: Screen artifacting with 4.18+ kernels on AMD Radeon
                    Vega 64 & 1440p 120hz+ monitors
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: mokurai82 at gmail.com

I'm experiencing some interlacing on the right side of the screen of my 1440p
144hz monitor when using 4.18+ kernels and setting the monitor to 120+ hz It
works fine with 100hz and lower, or older kernels, which seems to indicate some
displayport bandwidth issue/regression. This happens regardless of the distro
or mesa version. I'm using an RX Vega 64 with the opensource driver.

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