0001-xfree86-fix-enumerating-resolutions-on-NovaCustom-V5.patch

From 846c926735d78e4821bfe7491437f703ae280067 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Sat, 7 Dec 2024 03:06:08 +0100
Subject: [PATCH] xfree86: fix enumerating resolutions on NovaCustom V54
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With EDID present on NovaCustom V54 causes Xorg list _only_ the native
resolution. Wayland (gnome-shell) and Windows lists them all. I'm not
exactly sure what is wrong, especially whether it's buggy EDID or its
interpretation by Xorg, but given it works fine on other
implementations, it's likely Xorg issue. The simple change that seems to
fix it is pretending the display doesn't support GTF. So, do that, but
only for this specific display to limit impact on other displays (in
case it would break handling other GTF-supporting displays).

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 hw/xfree86/ddc/interpret_edid.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hw/xfree86/ddc/interpret_edid.c b/hw/xfree86/ddc/interpret_edid.c
index 7259d2192..17ce928b1 100644
--- a/hw/xfree86/ddc/interpret_edid.c
+++ b/hw/xfree86/ddc/interpret_edid.c
@@ -766,6 +766,13 @@ gtf_supported(xf86MonPtr mon)
         if (mon->features.msc & 0x1)
 	    return TRUE;
     } else {
+        /*
+         * quirk for NovaCustom V54 laptop, see
+         * https://github.com/Dasharo/dasharo-issues/issues/949
+         */
+        if (strcmp(mon->vendor.name, "TMX") == 0 && mon->vendor.prod_id == 8196)
+            return FALSE;
+
         for (i = 0; i < DET_TIMINGS; i++) {
             struct detailed_monitor_section *det_timing_des = &(mon->det_mon[i]);
             if (det_timing_des && (det_timing_des->type == DS_RANGES) && (mon->features.msc & 0x1) &&
-- 
2.46.0