eglChooseConfig on Samsung Galaxy S5 running ARM Mali T628 MP6

Hi, I'm trying to run a benchmarking tool on the Samsung Galaxy S5 to test some optimizations and perhaps start experimenting with the use of ASTC. It seems like the GL driver is failing to create a context without an associated window to render into. As you may know, opening a window on Android is a fairly involved process, so ideally I'd like to avoid it. I've attached the code that should be initializing the context and the results below:

EGLint error = EGL_SUCCESS;
if (EGL_SUCCESS != (error = eglGetError())) {
    Debugf("Prior EGL error: %s\n", getEGLErrorStr(error));
    return NULL;            
}

fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (fDisplay == EGL_NO_DISPLAY || EGL_SUCCESS != (error = eglGetError())) {
    Debugf("eglGetDisplay failed -- error: %s\n", getEGLErrorStr(error));
    return NULL;
}

EGLint majorVersion;
EGLint minorVersion;
if (EGL_TRUE != eglInitialize(fDisplay, &majorVersion, &minorVersion)) {
    if (EGL_SUCCESS != (error = eglGetError())) {
        Debugf("eglInitialize failed -- error: %s\n", getEGLErrorStr(error));
        return NULL;            
    }
}

Debugf("Major: %d, minor: %d\n", majorVersion, minorVersion);
Debugf("VENDOR: %s\n", eglQueryString(fDisplay, EGL_VENDOR));
Debugf("APIS: %s\n", eglQueryString(fDisplay, EGL_CLIENT_APIS));
Debugf("VERSION: %s\n", eglQueryString(fDisplay, EGL_VERSION));
Debugf("EXTENSIONS %s\n", eglQueryString(fDisplay, EGL_EXTENSIONS));

if (!eglBindAPI(EGL_OPENGL_ES_API)) {
    return NULL;
}

if (EGL_SUCCESS != (error = eglGetError())) {
    Debugf("eglBindAPI failed -- error: %s\n", getEGLErrorStr(error));
    return NULL;            
}

EGLint numConfigs;
const EGLint configAttribs[] = {
    EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
    EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
    EGL_RED_SIZE, 8,
    EGL_GREEN_SIZE, 8,
    EGL_BLUE_SIZE, 8,
    EGL_ALPHA_SIZE, EGL_DONT_CARE,
    EGL_DEPTH_SIZE, EGL_DONT_CARE,
    EGL_STENCIL_SIZE, EGL_DONT_CARE,
    EGL_NONE
};

EGLConfig surfaceConfig;
if (!eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs)) {
    Debugf("eglChooseConfig failed. EGL Error: 0x%08x\n", eglGetError());
    return NULL;
}

The output:

Major: 1, minor: 4

VENDOR: Android

APIS: OpenGL_ES

VERSION: 1.4 Android META-EGL

EXTENSIONS EGL_KHR_get_all_proc_addresses EGL_ANDROID_presentation_time

eglChooseConfig failed. EGL Error: 0x00003001

I'm hesitant to say that this is a bug in the driver, but I'm not totally sure what I'm doing wrong in my initialization code. Any help would be appreciated . Also, if this isn't an appropriate forum for a question like this, I'd be glad to direct it to the right place.