we are facing a strange issue on 2 routers with identical hardware: TP-LINK TL-WR841N/ND v8 - i cannot set txpower >18 dBm according to 'iwconfig'/'iwinfo' on ONE router. the other (different location, same openwrt-revision r38432) can do that:
root@BerkaerBahnhof-Knoten59:~ uci set wireless.radio0.txpower=15; wifi; sleep 30; iwinfo command failed: Device or resource busy (-16) Configuration file: /var/run/hostapd-phy0.conf Using interface wlan0 with hwaddr 64:70:02:59:41:3e and ssid "BerkaerBahnhofWeimarnetz" wlan0 ESSID: "BerkaerBahnhofWeimarnetz" Access Point: 64:70:02:59:41:3E Mode: Master Channel: 5 (2.432 GHz) Tx-Power: 15 dBm Link Quality: 36/70 Signal: -74 dBm Noise: -95 dBm Bit Rate: 14.4 MBit/s Encryption: none Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 wlan0-1 ESSID: "weimarnetz" Access Point: 02:CA:FF:EE:BA:BE Mode: Ad-Hoc Channel: 5 (2.432 GHz) Tx-Power: 15 dBm Link Quality: unknown/70 Signal: unknown Noise: -95 dBm Bit Rate: unknown Encryption: unknown Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 root@BerkaerBahnhof-Knoten59:~ uci set wireless.radio0.txpower=20; wifi; sleep 30; iwinfo command failed: Device or resource busy (-16) Configuration file: /var/run/hostapd-phy0.conf Using interface wlan0 with hwaddr 64:70:02:59:41:3e and ssid "BerkaerBahnhofWeimarnetz" wlan0 ESSID: "BerkaerBahnhofWeimarnetz" Access Point: 64:70:02:59:41:3E Mode: Master Channel: 5 (2.432 GHz) Tx-Power: 20 dBm Link Quality: 29/70 Signal: -81 dBm Noise: -95 dBm Bit Rate: 13.0 MBit/s Encryption: none Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 wlan0-1 ESSID: "weimarnetz" Access Point: 02:CA:FF:EE:BA:BE Mode: Ad-Hoc Channel: 5 (2.432 GHz) Tx-Power: 20 dBm Link Quality: unknown/70 Signal: unknown Noise: -95 dBm Bit Rate: unknown Encryption: unknown Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 root@BerkaerBahnhof-Knoten59:~ uci show wireless wireless.radio0=wifi-device wireless.radio0.type=mac80211 wireless.radio0.country=BO wireless.radio0.channel=5 wireless.radio0.frag=off wireless.radio0.beacon_int=1000 wireless.radio0.path=platform/ar934x_wmac wireless.radio0.hwmode=11ng wireless.radio0.htmode=HT20 wireless.radio0.ht_capab=LDPC SHORT-GI-20 SHORT-GI-40 TX-STBC RX-STBC1 DSSS_CCK-40 wireless.radio0.txpower=20 wireless.@wifi-iface[0]=wifi-iface wireless.@wifi-iface[0].device=radio0 wireless.@wifi-iface[0].network=wlanadhoc wireless.@wifi-iface[0].mode=adhoc wireless.@wifi-iface[0].bssid=02:ca:ff:ee:ba:be wireless.@wifi-iface[0].ssid=weimarnetz wireless.@wifi-iface[0].mcast_rate=1000 wireless.@wifi-iface[1]=wifi-iface wireless.@wifi-iface[1].device=radio0 wireless.@wifi-iface[1].network=wlan wireless.@wifi-iface[1].mode=ap wireless.@wifi-iface[1].ssid=BerkaerBahnhofWeimarnetz wireless.@wifi-iface[1].encryption=none wireless.@auto_optimize[0]=auto_optimize wireless.@auto_optimize[0].neigh=off ###################### the other one ################ root@die-koenigin:~ uci set wireless.radio0.txpower=15; wifi; sleep 30; iwinfo command failed: Device or resource busy (-16) Configuration file: /var/run/hostapd-phy0.conf Using interface wlan0 with hwaddr 64:66:b3:ab:4c:e0 and ssid "Weimarnetz - Breitscheid 4" wlan0 ESSID: "Weimarnetz - Breitscheid 4" Access Point: 64:66:B3:AB:4C:E0 Mode: Master Channel: 5 (2.432 GHz) Tx-Power: 15 dBm Link Quality: unknown/70 Signal: unknown Noise: -95 dBm Bit Rate: unknown Encryption: none Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 wlan0-1 ESSID: "weimarnetz" Access Point: 02:CA:FF:EE:BA:BE Mode: Ad-Hoc Channel: 5 (2.432 GHz) Tx-Power: 15 dBm Link Quality: 23/70 Signal: -87 dBm Noise: -95 dBm Bit Rate: 1.0 MBit/s Encryption: unknown Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 root@die-koenigin:~ uci set wireless.radio0.txpower=20; wifi; sleep 30; iwinfo command failed: Device or resource busy (-16) Configuration file: /var/run/hostapd-phy0.conf Using interface wlan0 with hwaddr 64:66:b3:ab:4c:e0 and ssid "Weimarnetz - Breitscheid 4" wlan0 ESSID: "Weimarnetz - Breitscheid 4" Access Point: 64:66:B3:AB:4C:E0 Mode: Master Channel: 5 (2.432 GHz) Tx-Power: 18 dBm Link Quality: unknown/70 Signal: unknown Noise: -95 dBm Bit Rate: unknown Encryption: none Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 wlan0-1 ESSID: "weimarnetz" Access Point: 02:CA:FF:EE:BA:BE Mode: Ad-Hoc Channel: 5 (2.432 GHz) Tx-Power: 18 dBm Link Quality: 26/70 Signal: -84 dBm Noise: -95 dBm Bit Rate: 1.0 MBit/s Encryption: unknown Type: nl80211 HW Mode(s): 802.11bgn Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0 root@die-koenigin:~ uci show wireless wireless.radio0=wifi-device wireless.radio0.type=mac80211 wireless.radio0.country=BO wireless.radio0.channel=5 wireless.radio0.frag=off wireless.radio0.beacon_int=1000 wireless.radio0.path=platform/ar934x_wmac wireless.radio0.hwmode=11ng wireless.radio0.htmode=HT20 wireless.radio0.ht_capab=LDPC SHORT-GI-20 SHORT-GI-40 TX-STBC RX-STBC1 DSSS_CCK-40 wireless.radio0.txpower=20 wireless.@wifi-iface[0]=wifi-iface wireless.@wifi-iface[0].device=radio0 wireless.@wifi-iface[0].network=wlanadhoc wireless.@wifi-iface[0].mode=adhoc wireless.@wifi-iface[0].bssid=02:ca:ff:ee:ba:be wireless.@wifi-iface[0].ssid=weimarnetz wireless.@wifi-iface[0].mcast_rate=1000 wireless.@wifi-iface[0].encryption=none wireless.@wifi-iface[1]=wifi-iface wireless.@wifi-iface[1].device=radio0 wireless.@wifi-iface[1].network=wlan wireless.@wifi-iface[1].mode=ap wireless.@wifi-iface[1].ssid=Weimarnetz - Breitscheid 4 wireless.@auto_optimize[0]=auto_optimize wireless.@auto_optimize[0].neigh=off what can we do? bye, bastian _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel