Bug#1082741: Xorg fails loading in graphics mode on trixie installer (loop keeps failing), nvidia, amd radeon

[Andrew Kornilov]

Hi,

I've revamped the patch (it didn't apply on xorg-server
2:21.1.7-3+deb12u8), built xorg-server, built linux-image 6.12.3 +
debian-installer from git and can confirm that this patch helped and now
graphical installer works fine.

diff --git a/hw/xfree86/fbdevhw/fbdevhw.c b/hw/xfree86/fbdevhw/fbdevhw.c
index 3d8b92e..9c30f00 100644
--- a/hw/xfree86/fbdevhw/fbdevhw.c
+++ b/hw/xfree86/fbdevhw/fbdevhw.c
@@ -335,9 +335,9 @@ fbdev_open(int scrnIndex, const char *dev, char **namep)
         char *sysfs_path = NULL;
         char *node = strrchr(dev, '/') + 1;
 
-        if (asprintf(&sysfs_path, "/sys/class/graphics/%s", node) < 0 ||
+        if (asprintf(&sysfs_path, "/sys/class/graphics/%s/device/subsystem", node) < 0 ||
             readlink(sysfs_path, buf, sizeof(buf) - 1) < 0 ||
-            strstr(buf, "devices/pci")) {
+            strstr(buf, "bus/pci")) {
             free(sysfs_path);
             close(fd);
             return -1;