[Bug 285580] drm-66-kmod "Refresh bug" on FreeBSD 15.0-CURRENT

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285580

            Bug ID: 285580
           Summary: drm-66-kmod "Refresh bug" on FreeBSD 15.0-CURRENT
           Product: Base System
           Version: Unspecified
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: alexander.nogal@proton.me

Hello!

A couple hours ago, I compiled a fresh off-the-trunk kernel and userland from
the FreeBSD github for testing. I first thought to test drm-66-kmod. Everything
appeared to be working, until I logged into i3 (xorg) and noticed a strange
issue. Every time I made slight movements with the cursor, or opened a window,
the screen would go black for about 5 seconds until there was no HID
interaction. My monitor is 180hz. When I tuned it down to 60hz, the issue
seemed to disappear. I could go all the way up to 120hz, and anything past that
make the bug present. I remember noticing a similar issue in Fedora Linux
around 8 months prior, and that led me to believe a bug may have snuck it's way
into the 6.6 backport.

I also tried drm-61-kmod on FreeBSD 15.0, but that had zero success. It would
freeze the second I try to load a GUI from the tty. 

My system specs:
Alex@Alex-PC ~> fastfetch
```                        `        Alex@Alex-PC
  ` `.....---.......--.```   -/     ------------
  +o   .--`         /y:`      +.    Host: MS-7B86 (5.0)
   yo`:.            :o      `+-     Kernel: FreeBSD 15.0-CURRENT
    y/               -/`   -o/      Uptime: 11 mins
   .-                  ::/sy+:.     Packages: 922 (pkg)
   /                     `--  /     Shell: fish 3.7.1
  `:                          :`    Display (MSI G2422C): 1920x1080 @ 60 Hz in
24" [External]
  `:                          :`    WM: i3 (X11)
   /                          /     Theme: LAVA-Orange [GTK2/3]
   .-                        -.     Icons: Flat-Remix-Orange-Dark [GTK2/3]
    --                      -.      Font: JetBrains Mono (11pt) [GTK2/3]
     `:`                  `:`       Cursor: Adwaita
       .--             `--.         Terminal: kitty 0.40.0
          .---.....----.            Terminal Font: JetBrainsMono-Regular (11pt)
                                    CPU: AMD Ryzen 5 5600 (12) @ 3.50 GHz
                                    GPU: AMD Radeon RX 6600 XT
                                    Memory: 11.81 GiB / 31.88 GiB (37%)
                                    Swap: Disabled
                                    Disk (/): 24.28 GiB / 240.55 GiB (10%) -
zfs
                                    Disk (/boot/efi): 1.33 MiB / 259.91 MiB
(1%) - msdosfs
                                    Disk (/media/da0s1): 2.56 GiB / 115.41 GiB
(2%) - msdosfs
                                    Disk (/zroot): 96.00 KiB / 216.27 GiB (0%)
- zfs
                                    Local IP (wifibox0): 10.0.0.2/24
                                    Locale: C.UTF-8


Alex@Alex-PC ~> 

I will report any new findings.

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