static const struct ivtv_card ivtv_card_pg600v2 = {
        .type = IVTV_CARD_PG600V2,
        .name = "Yuan PG600-2, GotView PCI DVD Lite",
+       .comment = "only Composite and S-Video inputs are supported, not the tuner\n",
        .v4l2_capabilities = IVTV_CAP_ENCODER,
        .hw_video = IVTV_HW_CX25840,
        .hw_audio = IVTV_HW_CX25840,
 static const struct ivtv_card ivtv_card_avertv_mce116 = {
        .type = IVTV_CARD_AVERTV_MCE116,
        .name = "AVerTV MCE 116 Plus",
+       .comment = "only Composite and S-Video inputs are supported, not the tuner\n",
        .v4l2_capabilities = IVTV_CAP_ENCODER,
        .hw_video = IVTV_HW_CX25840,
        .hw_audio = IVTV_HW_CX25840,
 
                   The PCI IDs are not always reliable. */
                ivtv_process_eeprom(itv);
        }
+       if (itv->card->comment)
+               IVTV_INFO("%s", itv->card->comment);
+       if (itv->card->v4l2_capabilities == 0) {
+               /* card was detected but is not supported */
+               retval = -ENODEV;
+               goto free_i2c;
+       }
 
        if (itv->std == 0) {
                itv->std = V4L2_STD_NTSC_M;