[Bug 276181] graphics/drm-61-kmod - screen flickering on Raptor Lake graphics

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 07 Jan 2024 16:58:25 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276181

            Bug ID: 276181
           Summary: graphics/drm-61-kmod - screen flickering on Raptor
                    Lake graphics
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: x11@FreeBSD.org
          Reporter: shuriku@shurik.kiev.ua
             Flags: maintainer-feedback?(x11@FreeBSD.org)
          Assignee: x11@FreeBSD.org

On my Thinkpad X1 Carbon with Raptor lake graphics I have periodically screen
flickering on both my laptop screen and external monitor. dmesg(8) shows a lot
of errors:

drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080
drmn0: [drm] *ERROR* Fault errors on pipe A: 0x00000080

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