diff --git a/Xext/vidmode.c b/Xext/vidmode.c
index f9bbf9830..a192cff29 100644
--- a/Xext/vidmode.c
+++ b/Xext/vidmode.c
@@ -1280,7 +1280,7 @@ ProcVidModeGetMonitor(ClientPtr client)
                   + nHsync + nVrefresh + nVendorItems + nModelItems
     };
 
-    const int buflen = nHsync * nVrefresh + nVendorItems + nModelItems;
+    const int buflen = nHsync + nVrefresh + nVendorItems + nModelItems;
 
     CARD32 *sendbuf = calloc(buflen, sizeof(CARD32));
     if (!sendbuf)
@@ -1302,22 +1302,22 @@ ProcVidModeGetMonitor(ClientPtr client)
         bufwalk++;
     }
 
-    memcpy(sendbuf,
+    memcpy(bufwalk,
            pVidMode->GetMonitorValue(pScreen, VIDMODE_MON_VENDOR, 0).ptr,
            vendorLength);
-    sendbuf += nVendorItems;
+    bufwalk += nVendorItems;
 
-    memcpy(sendbuf,
+    memcpy(bufwalk,
            pVidMode->GetMonitorValue(pScreen, VIDMODE_MON_MODEL, 0).ptr,
            modelLength);
-    sendbuf += nModelItems;
+    bufwalk += nModelItems;
 
     if (client->swapped) {
         swaps(&rep.sequenceNumber);
         swapl(&rep.length);
     }
 
-    WriteToClient(client, SIZEOF(xXF86VidModeGetMonitorReply), &rep);
+    WriteToClient(client, sizeof(xXF86VidModeGetMonitorReply), &rep);
     WriteToClient(client, buflen * sizeof(CARD32), sendbuf);
 
     free(sendbuf);
diff --git a/Xext/xf86bigfont.c b/Xext/xf86bigfont.c
index 13ad79a98..fb62c463c 100644
--- a/Xext/xf86bigfont.c
+++ b/Xext/xf86bigfont.c
@@ -647,7 +647,6 @@ ProcXF86BigfontDispatch(ClientPtr client)
 static int _X_COLD
 SProcXF86BigfontQueryVersion(ClientPtr client)
 {
-    REQUEST(xXF86BigfontQueryVersionReq);
     return ProcXF86BigfontQueryVersion(client);
 }
 
diff --git a/hw/kdrive/ephyr/ephyr.c b/hw/kdrive/ephyr/ephyr.c
index 9b00ed11f..cdc22cecf 100644
--- a/hw/kdrive/ephyr/ephyr.c
+++ b/hw/kdrive/ephyr/ephyr.c
@@ -1435,12 +1435,11 @@ MouseFini(KdPointerInfo * pi)
 }
 
 KdPointerDriver EphyrMouseDriver = {
-    "ephyr",
-    MouseInit,
-    MouseEnable,
-    MouseDisable,
-    MouseFini,
-    NULL,
+    .name    = "ephyr",
+    .Init    = MouseInit,
+    .Enable  = MouseEnable,
+    .Disable = MouseDisable,
+    .Fini    = MouseFini,
 };
 
 /* Keyboard */
@@ -1509,12 +1508,11 @@ EphyrKeyboardBell(KdKeyboardInfo * ki, int volume, int frequency, int duration)
 }
 
 KdKeyboardDriver EphyrKeyboardDriver = {
-    "ephyr",
-    EphyrKeyboardInit,
-    EphyrKeyboardEnable,
-    EphyrKeyboardLeds,
-    EphyrKeyboardBell,
-    EphyrKeyboardDisable,
-    EphyrKeyboardFini,
-    NULL,
+    .name    = "ephyr",
+    .Init    = EphyrKeyboardInit,
+    .Enable  = EphyrKeyboardEnable,
+    .Leds    = EphyrKeyboardLeds,
+    .Bell    = EphyrKeyboardBell,
+    .Disable = EphyrKeyboardDisable,
+    .Fini    = EphyrKeyboardFini,
 };
diff --git a/hw/kdrive/ephyr/ephyrinit.c b/hw/kdrive/ephyr/ephyrinit.c
index ff0d5d0cc..f65cef052 100644
--- a/hw/kdrive/ephyr/ephyrinit.c
+++ b/hw/kdrive/ephyr/ephyrinit.c
@@ -370,6 +370,23 @@ ddxProcessArgument(int argc, char **argv, int i)
     return KdProcessArgument(argc, argv, i);
 }
 
+static int
+EphyrInit(void)
+{
+    /*
+     * make sure at least one screen
+     * has been added to the system.
+     */
+    if (!KdCardInfoLast()) {
+        processScreenArg("640x480", NULL);
+    }
+    return hostx_init();
+}
+
+KdOsFuncs EphyrOsFuncs = {
+    .Init = EphyrInit,
+};
+
 void
 OsVendorInit(void)
 {
@@ -381,32 +398,23 @@ OsVendorInit(void)
     if (hostx_want_host_cursor())
         ephyrFuncs.initCursor = &ephyrCursorInit;
 
-    if (serverGeneration == 1) {
-        if (!KdCardInfoLast()) {
-            processScreenArg("640x480", NULL);
-        }
-        hostx_init();
-    }
+    KdOsInit(&EphyrOsFuncs);
 }
 
 KdCardFuncs ephyrFuncs = {
-    ephyrCardInit,              /* cardinit */
-    ephyrScreenInitialize,      /* scrinit */
-    ephyrInitScreen,            /* initScreen */
-    ephyrFinishInitScreen,      /* finishInitScreen */
-    ephyrCreateResources,       /* createRes */
-    ephyrScreenFini,            /* scrfini */
-    ephyrCardFini,              /* cardfini */
+    .cardinit         = ephyrCardInit,
+    .scrinit          = ephyrScreenInitialize,
+    .initScreen       = ephyrInitScreen,
+    .finishInitScreen = ephyrFinishInitScreen,
+    .createRes        = ephyrCreateResources,
 
-    0,                          /* initCursor */
+    .scrfini          = ephyrScreenFini,
+    .cardfini         = ephyrCardFini,
 
-    0,                          /* initAccel */
-    0,                          /* enableAccel */
-    0,                          /* disableAccel */
-    0,                          /* finiAccel */
+    /* no cursor or accel funcs here */
 
-    ephyrGetColors,             /* getColors */
-    ephyrPutColors,             /* putColors */
+    .getColors        = ephyrGetColors,
+    .putColors        = ephyrPutColors,
 
-    ephyrCloseScreen,           /* closeScreen */
+    .closeScreen      = ephyrCloseScreen,
 };
diff --git a/hw/kdrive/src/kdrive.c b/hw/kdrive/src/kdrive.c
index 36bda4153..4637bb6be 100644
--- a/hw/kdrive/src/kdrive.c
+++ b/hw/kdrive/src/kdrive.c
@@ -91,6 +91,14 @@ const char *kdGlobalXkbLayout = NULL;
 const char *kdGlobalXkbVariant = NULL;
 const char *kdGlobalXkbOptions = NULL;
 
+
+/*
+ * Carry arguments from InitOutput through driver initialization
+ * to KdScreenInit
+ */
+
+KdOsFuncs *kdOsFuncs = NULL;
+
 void
 KdDisableScreen(ScreenPtr pScreen)
 {
@@ -517,6 +525,19 @@ KdProcessArgument(int argc, char **argv, int i)
     return 0;
 }
 
+void
+KdOsInit(KdOsFuncs * pOsFuncs)
+{
+    kdOsFuncs = pOsFuncs;
+    if (pOsFuncs) {
+        if (serverGeneration == 1) {
+            KdDoSwitchCmd("start");
+            if (pOsFuncs->Init)
+                (*pOsFuncs->Init) ();
+        }
+    }
+}
+
 static Bool
 KdAllocatePrivates(ScreenPtr pScreen)
 {
diff --git a/hw/kdrive/src/kdrive.h b/hw/kdrive/src/kdrive.h
index a4b7576d0..7ce181f42 100644
--- a/hw/kdrive/src/kdrive.h
+++ b/hw/kdrive/src/kdrive.h
@@ -278,6 +278,16 @@ int KdAddConfigKeyboard(char *pointer);
 int KdAddKeyboard(KdKeyboardInfo * ki);
 void KdRemoveKeyboard(KdKeyboardInfo * ki);
 
+typedef struct _KdOsFuncs {
+    int (*Init) (void); /* Only called when the X server is started, when serverGeneration == 1 */
+    void (*Enable) (void);
+    Bool (*SpecialKey) (KeySym);
+    void (*Disable) (void);
+    void (*Fini) (void);
+    void (*pollEvents) (void);
+    void (*Bell) (int, int, int);
+} KdOsFuncs;
+
 typedef struct _KdPointerMatrix {
     int matrix[2][3];
 } KdPointerMatrix;
@@ -289,6 +299,8 @@ extern DevPrivateKeyRec kdScreenPrivateKeyRec;
 extern Bool kdEmulateMiddleButton;
 extern Bool kdDisableZaphod;
 
+extern KdOsFuncs *kdOsFuncs;
+
 #define KdGetScreenPriv(pScreen) ((KdPrivScreenPtr) \
     dixLookupPrivate(&(pScreen)->devPrivates, kdScreenPrivateKey))
 #define KdSetScreenPriv(pScreen,v) \
@@ -345,6 +357,9 @@ void
 int
  KdProcessArgument(int argc, char **argv, int i);
 
+void
+ KdOsInit(KdOsFuncs * pOsFuncs);
+
 void
  KdOsAddInputDrivers(void);
 
diff --git a/hw/xfree86/compat/README b/hw/xfree86/compat/README
index 19af90339..fd8c3b0f7 100644
--- a/hw/xfree86/compat/README
+++ b/hw/xfree86/compat/README
@@ -1 +1,5 @@
 special compat code for legacy drivers, namely Nvidia proprietary
+
+NVidia is lacking behind for at least a year and don't actually clean up
+their spaghetti code. That's why we need to keep several special compat
+functions to emulate prehistoric behaviour.
diff --git a/hw/xfree86/compat/clientexception.c b/hw/xfree86/compat/clientexception.c
index 6005f22c4..cabde3ff2 100644
--- a/hw/xfree86/compat/clientexception.c
+++ b/hw/xfree86/compat/clientexception.c
@@ -4,6 +4,8 @@
 
 #include "dix/dix_priv.h"
 
+#include "xf86_compat.h"
+
 /*
  * this is specifically for NVidia proprietary driver: they're again lagging
  * behind a year, doing at least some minimal cleanup of their code base.
@@ -13,12 +15,7 @@ _X_EXPORT void MarkClientException(ClientPtr pClient);
 
 void MarkClientException(ClientPtr pClient)
 {
-    LogMessageVerb(X_WARNING, 0, "Bogus driver calling DIX-internal function MarkClientException() !\n");
-    LogMessageVerb(X_WARNING, 0, "External drivers really should never ever call this function.\n");
-    LogMessageVerb(X_WARNING, 0, "Nor should they ever DIX-internal fields like ClientRec->noClientException\n");
-    LogMessageVerb(X_WARNING, 0, "File a bug report to driver vendor or use a FOSS driver.\n");
-    LogMessageVerb(X_WARNING, 0, "Proprietary drivers are inherently unstable, they just can't be done right.\n");
-    LogMessageVerb(X_WARNING, 0, "And just don't buy Nvidia hardware, ever.\n");
+    xf86NVidiaBugInternalFunc("MarkClientException()");
 
     dixMarkClientException(pClient);
 }
diff --git a/hw/xfree86/compat/log.c b/hw/xfree86/compat/log.c
index 97f238071..64014e205 100644
--- a/hw/xfree86/compat/log.c
+++ b/hw/xfree86/compat/log.c
@@ -4,6 +4,8 @@
 
 #include "include/os.h"
 
+#include "xf86_compat.h"
+
 #undef xf86Msg
 #undef xf86MsgVerb
 
@@ -17,9 +19,7 @@ _X_EXPORT void xf86Msg(MessageType type, const char *format, ...)
 
 void xf86Msg(MessageType type, const char *format, ...)
 {
-    LogMessageVerb(X_WARNING, 0, "Outdated driver still using xf86Msg() !\n");
-    LogMessageVerb(X_WARNING, 0, "File a bug report to driver vendor or use a FOSS driver.\n");
-    LogMessageVerb(X_WARNING, 0, "Proprietary drivers are inherently unstable, they just can't be done right.\n");
+    xf86NVidiaBugInternalFunc("xf86Msg()");
 
     va_list ap;
 
@@ -39,9 +39,7 @@ _X_EXPORT void xf86MsgVerb(MessageType type, int verb, const char *format, ...)
 void
 xf86MsgVerb(MessageType type, int verb, const char *format, ...)
 {
-    LogMessageVerb(X_WARNING, 0, "Outdated driver still using xf86MsgVerb() !\n");
-    LogMessageVerb(X_WARNING, 0, "File a bug report to driver vendor or use a FOSS driver.\n");
-    LogMessageVerb(X_WARNING, 0, "Proprietary drivers are inherently unstable, they just can't be done right.\n");
+    xf86NVidiaBugInternalFunc("xf86MsgVerb()");
 
     va_list ap;
     va_start(ap, format);
diff --git a/hw/xfree86/compat/meson.build b/hw/xfree86/compat/meson.build
index d863ab2d8..b3835efdc 100644
--- a/hw/xfree86/compat/meson.build
+++ b/hw/xfree86/compat/meson.build
@@ -1,6 +1,7 @@
 srcs_xorg_compat = [
     'clientexception.c',
     'log.c',
+    'nvidiabug.c',
     'ones.c',
     'xf86Helper.c',
 ]
diff --git a/hw/xfree86/compat/nvidiabug.c b/hw/xfree86/compat/nvidiabug.c
new file mode 100644
index 000000000..7c2c138fc
--- /dev/null
+++ b/hw/xfree86/compat/nvidiabug.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#include <dix-config.h>
+
+#include "include/os.h"
+
+#include "xf86_compat.h"
+
+void xf86NVidiaBug(void)
+{
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] file a bug report to driver vendor or use a free Xlibre driver.\n");
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] Proprietary drivers are inherently unstable, they just can't be done right.\n");
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] For NVidia report here: https://forums.developer.nvidia.com/c/gpu-graphics/linux/148\n");
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] And better don't buy NVidia HW until they've fixed their mess.\n");
+}
+
+void xf86NVidiaBugInternalFunc(const char* name)
+{
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] calling internal function: %s\n", name);
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] this function is not supposed to be by drivers ever\n");
+    xf86NVidiaBug();
+}
+
+void xf86NVidiaBugObsoleteFunc(const char* name)
+{
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] calling obsolete function: %s\n", name);
+    LogMessageVerb(X_WARNING, 0, "[DRIVER BUG] this function is not supposed to be by drivers ever\n");
+    xf86NVidiaBug();
+}
diff --git a/hw/xfree86/compat/xf86_compat.h b/hw/xfree86/compat/xf86_compat.h
new file mode 100644
index 000000000..34c46e819
--- /dev/null
+++ b/hw/xfree86/compat/xf86_compat.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#ifndef __XFREE86_COMPAT_XF86_COMPAT_H
+#define __XFREE86_COMPAT_XF86_COMPAT_H
+
+void xf86NVidiaBug(void);
+void xf86NVidiaBugInternalFunc(const char* name);
+void xf86NVidiaBugObsoleteFunc(const char* name);
+
+#endif /* __XFREE86_COMPAT_XF86_COMPAT_H */
diff --git a/hw/xfree86/loader/loadmod.c b/hw/xfree86/loader/loadmod.c
index be9335dd5..2cdf91fd2 100644
--- a/hw/xfree86/loader/loadmod.c
+++ b/hw/xfree86/loader/loadmod.c
@@ -417,7 +417,6 @@ CheckVersion(const char *module, XF86ModuleVersionInfo * data,
 {
     int vercode[4];
     long ver = data->xf86version;
-    MessageType errtype;
 
     LogMessage(X_INFO, "Module %s: vendor=\"%s\"\n",
                data->modname ? data->modname : "UNKNOWN!",
@@ -458,6 +457,7 @@ CheckVersion(const char *module, XF86ModuleVersionInfo * data,
             vermaj = GET_ABI_MAJOR(ver);
             vermin = GET_ABI_MINOR(ver);
             if (abimaj != vermaj) {
+                MessageType errtype;
                 if (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL)
                     errtype = X_WARNING;
                 else
@@ -469,6 +469,7 @@ CheckVersion(const char *module, XF86ModuleVersionInfo * data,
                     return FALSE;
             }
             else if (abimin > vermin) {
+                MessageType errtype;
                 if (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL)
                     errtype = X_WARNING;
                 else
diff --git a/os/log.c b/os/log.c
index 60837b10d..c0ff0ee93 100644
--- a/os/log.c
+++ b/os/log.c
@@ -410,6 +410,10 @@ vpnprintf(char *string, int size_in, const char *f, va_list args)
 
         f_idx++;
 
+        /* silently ignore reverse justification */
+        if (f[f_idx] == '-')
+            f_idx++;
+
         /* silently swallow minimum field width */
         if (f[f_idx] == '*') {
             f_idx++;