diff -r 0de05c2ae1be drivers/net/wireless/rtl818x/rtl8187/dev.c
--- a/drivers/net/wireless/rtl818x/rtl8187/dev.c	Sat Sep 29 20:29:54 2012 -0400
+++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c	Sat Sep 29 20:37:29 2012 -0400
@@ -252,8 +252,18 @@
 	flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
 
 	flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
+	
+	// When this flag is set the firmware waits untill ALL fragments have
+	// reached the USB device. Then it sends the first fragment and waits
+	// for ACKS's. Of course in monitor mode it won't detect these ACK's.
 	if (ieee80211_has_morefrags(tx_hdr->frame_control))
-		flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
+	{
+		// If info->control.vif is NULL it's most likely in monitor mode
+		if (info->control.vif != NULL && info->control.vif->type != NL80211_IFTYPE_MONITOR) {
+			flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
+		}
+	}
+
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
 		flags |= RTL818X_TX_DESC_FLAG_RTS;
 		flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
diff -r 0de05c2ae1be net/mac80211/tx.c
--- a/net/mac80211/tx.c	Sat Sep 29 20:29:54 2012 -0400
+++ b/net/mac80211/tx.c	Sat Sep 29 20:37:29 2012 -0400
@@ -1508,7 +1508,10 @@
 		}
 	}

-	ieee80211_set_qos_hdr(sdata, skb);
+	// Don't overwrite QoS header in monitor mode
+	if (likely(info->control.vif->type != NL80211_IFTYPE_MONITOR)) {
+		ieee80211_set_qos_hdr(sdata, skb);
+	}
 	ieee80211_tx(sdata, skb, false, band);
 }

diff -r 0de05c2ae1be net/wireless/chan.c
--- a/net/wireless/chan.c	Sat Sep 29 20:29:54 2012 -0400
+++ b/net/wireless/chan.c	Sat Sep 29 20:37:29 2012 -0400
@@ -439,8 +439,8 @@
 { 
 	if (!rdev->ops->set_monitor_channel)
 		return -EOPNOTSUPP;
-	if (!cfg80211_has_monitors_only(rdev))
-		return -EBUSY;
+	//if (!cfg80211_has_monitors_only(rdev))
+	//	return -EBUSY;

 	return rdev_set_monitor_channel(rdev, chandef);
 }