diff --git a/internal/runner/tasks/render.go b/internal/runner/tasks/render.go
index c4447ff..46fb484 100644
--- a/internal/runner/tasks/render.go
+++ b/internal/runner/tasks/render.go
@@ -25,15 +25,23 @@ func NewRenderProcessor() *RenderProcessor {
 	return &RenderProcessor{}
 }
 
-// gpuErrorSubstrings are log line substrings that indicate a GPU backend error; any match triggers full GPU lockout.
+// gpuErrorSubstrings are log line substrings that indicate a GPU backend error (matched case-insensitively); any match triggers full GPU lockout.
 var gpuErrorSubstrings = []string{
-	"Illegal address in hip", // HIP (AMD) backend
+	"illegal address in hip",  // HIP (AMD) e.g. "Illegal address in HIP" or "Illegal address in hip"
+	"hiperror",                // hipError* codes
+	"hip error",
+	"cuda error",
+	"cuerror",
+	"optix error",
+	"oneapi error",
+	"opencl error",
 }
 
 // checkGPUErrorLine checks a log line for GPU error indicators and triggers runner GPU lockout if found.
 func (p *RenderProcessor) checkGPUErrorLine(ctx *Context, line string) {
+	lower := strings.ToLower(line)
 	for _, sub := range gpuErrorSubstrings {
-		if strings.Contains(line, sub) {
+		if strings.Contains(lower, sub) {
 			if ctx.OnGPUError != nil {
 				ctx.OnGPUError()
 			}