diff --git a/src/detection/gpu/gpu_bsd.c b/src/detection/gpu/gpu_bsd.c
index 01bb3d9a6..6684a2ae0 100644
--- a/src/detection/gpu/gpu_bsd.c
+++ b/src/detection/gpu/gpu_bsd.c
@@ -179,6 +179,9 @@ static const char* detectByPci(const FFGPUOptions* options, FFlist* gpus)
     {
         struct pci_conf* pc = &confs[i];
 
+        if (pc->pc_sel.pc_func > 0 && pc->pc_subclass == 0x80 /*PCI_CLASS_DISPLAY_OTHER*/)
+            continue; // Likely an auxiliary display controller (#2034)
+
         FFGPUResult* gpu = (FFGPUResult*)ffListAdd(gpus);
         ffStrbufInitStatic(&gpu->vendor, ffGPUGetVendorString(pc->pc_vendor));
         ffStrbufInit(&gpu->name);
diff --git a/src/detection/gpu/gpu_general.c b/src/detection/gpu/gpu_general.c
index 2370f44a1..504509fa2 100644
--- a/src/detection/gpu/gpu_general.c
+++ b/src/detection/gpu/gpu_general.c
@@ -30,6 +30,11 @@ const char* ffDetectGPUImpl(FF_MAYBE_UNUSED const FFGPUOptions* options, FFlist*
         if (dev->device_class >> 16 != 0x03 /*PCI_BASE_CLASS_DISPLAY*/)
             continue;
 
+        uint8_t subclass = (dev->device_class >> 8) & 0xFF;
+
+        if (dev->func > 0 && subclass == 0x80 /*PCI_CLASS_DISPLAY_OTHER*/)
+            continue; // Likely an auxiliary display controller (#2034)
+
         FFGPUResult* gpu = (FFGPUResult*)ffListAdd(gpus);
         ffStrbufInitStatic(&gpu->vendor, ffGPUGetVendorString(dev->vendor_id));
         ffStrbufInit(&gpu->name);
@@ -48,7 +53,7 @@ const char* ffDetectGPUImpl(FF_MAYBE_UNUSED const FFGPUOptions* options, FFlist*
             ffGPUQueryAmdGpuName(dev->device_id, dev->revision, gpu);
 
         if (gpu->name.length == 0)
-            ffGPUFillVendorAndName((dev->device_class >> 8) & 0xFF, dev->vendor_id, dev->device_id, gpu);
+            ffGPUFillVendorAndName(subclass, dev->vendor_id, dev->device_id, gpu);
     }
     ffpci_iterator_destroy(iter);
 
diff --git a/src/detection/gpu/gpu_haiku.c b/src/detection/gpu/gpu_haiku.c
index 9e19a4e8f..3368f7064 100644
--- a/src/detection/gpu/gpu_haiku.c
+++ b/src/detection/gpu/gpu_haiku.c
@@ -19,6 +19,9 @@ const char* ffDetectGPUImpl(FF_MAYBE_UNUSED const FFGPUOptions* options, FFlist*
         if (dev.class_base != 0x03 /*PCI_BASE_CLASS_DISPLAY*/)
             continue;
 
+        if (dev.function > 0 && dev.class_sub == 0x80 /*PCI_CLASS_DISPLAY_OTHER*/)
+            continue; // Likely an auxiliary display controller (#2034)
+
         FFGPUResult* gpu = (FFGPUResult*)ffListAdd(gpus);
         ffStrbufInitStatic(&gpu->vendor, ffGPUGetVendorString(dev.vendor_id));
         ffStrbufInit(&gpu->name);
diff --git a/src/detection/gpu/gpu_linux.c b/src/detection/gpu/gpu_linux.c
index a437bd84a..6fad45f4c 100644
--- a/src/detection/gpu/gpu_linux.c
+++ b/src/detection/gpu/gpu_linux.c
@@ -342,6 +342,9 @@ static const char* detectPci(const FFGPUOptions* options, FFlist* gpus, FFstrbuf
     if (sscanf(pPciPath, "%" SCNx32 ":%" SCNx32 ":%" SCNx32 ".%" SCNx32, &pciDomain, &pciBus, &pciDevice, &pciFunc) != 4)
         return "Invalid PCI device path";
 
+    if (pciFunc > 0 && subclassId == 0x80 /*PCI_CLASS_DISPLAY_OTHER*/)
+        return "Likely an auxiliary display controller"; // #2034
+
     FFGPUResult* gpu = (FFGPUResult*)ffListAdd(gpus);
     ffStrbufInitStatic(&gpu->vendor, ffGPUGetVendorString((uint16_t) vendorId));
     ffStrbufInit(&gpu->name);