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Date:      Wed, 24 Jun 2026 03:38:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 296246] stand: loader.efi slightly garbled menu with UEFI GOP
Message-ID:  <bug-296246-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296246

            Bug ID: 296246
           Summary: stand: loader.efi slightly garbled menu with UEFI GOP
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
               URL: https://lists.freebsd.org/archives/freebsd-current/202
                    6-June/010385.html
                OS: Any
            Status: New
          Keywords: regression
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: 2khramtsov@gmail.com

Sometime when building -CURRENT and updating loader.efi between May 16 01:52
and Jun 24 03:12, the resulting loader.efi will result in 4K GOP output being
slightly garbled in the menu of loader.efi. I see the bottom line of my screen
as colored perlin noise and the titles of menu entries are offset, for some
reason.

4K resolution for UEFI GOP isn't selected by default for me on RX 6800 XT, so I
have this in /boot/lua/local.lua:

require("cli")
local color = require("color")
local core = require("core")
local config = require("config")

if core.isUEFIBoot() then
        loader.perform("gop set 0")
end

I don't have the time currently to bisect this so I'll leave this PR here until
I'll find some.

I also see
https://lists.freebsd.org/archives/freebsd-current/2026-June/010385.html  which
reports an issue that I experience too maybe.

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