Hi, I am working with a SR71 and R11E miniPCIe wifi cards on an embedded system running Debian wheezy (3.2.68-rt99). Something is wrong because when I scan with my laptop I get around 15 networks and when I do it on the system I just get only two or three. I have tried different kernel configs and driver versions with same result, and I have no idea what else I can try. Does anyone know what it could be or how to debug the issue? I am stuck System information: uname -a Linux Debian 3.2.68-rt99 #16 SMP Tue Jul 28 16:06:32 CEST 2015 i686 GNU/Linux lspci | grep -i wireless 04:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01) 06:00.0 Network controller: Atheros Communications Inc. AR9580 Wireless Network Adapter (rev 01) lsmod | grep ath9k ath9k 99265 0 ath9k_common 1500 1 ath9k ath9k_hw 377206 2 ath9k_common,ath9k mac80211 207625 1 ath9k ath 12275 3 ath9k_hw,ath9k_common,ath9k cfg80211 146315 3 ath,mac80211,ath9k modinfo ath9k filename: /lib/modules/3.2.68- rt99/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko license: Dual BSD/GPL description: Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications alias: platform:ar934x_wmac alias: platform:ar933x_wmac alias: platform:ath9k alias: pci:v0000168Cd00000037sv*sd*bc*sc*i* alias: pci:v0000168Cd00000034sv*sd*bc*sc*i* alias: pci:v0000168Cd00000033sv*sd*bc*sc*i* alias: pci:v0000168Cd00000032sv*sd*bc*sc*i* alias: pci:v0000168Cd00000030sv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Esv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Dsv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Csv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Bsv*sd*bc*sc*i* alias: pci:v0000168Cd0000002Asv*sd*bc*sc*i* alias: pci:v0000168Cd00000029sv*sd*bc*sc*i* alias: pci:v0000168Cd00000027sv*sd*bc*sc*i* alias: pci:v0000168Cd00000024sv*sd*bc*sc*i* alias: pci:v0000168Cd00000023sv*sd*bc*sc*i* depends: ath9k_hw,ath9k_common,mac80211,cfg80211,ath intree: Y vermagic: 3.2.68-rt99 SMP mod_unload 686 parm: debug:Debugging mask (uint) parm: nohwcrypt:Disable hardware encryption (int) parm: blink:Enable LED blink on activity (int) parm: btcoex_enable:Enable wifi-BT coexistence (int) parm: ps_enable:Enable WLAN PowerSave (int) iw list (just shown phy0) Wiphy phy0 Band 1: Capabilities: 0x11ce HT20/HT40 SM Power Save disabled RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 3839 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 8 usec (0x06) HT TX/RX MCS rate indexes supported: 0-15 Frequencies: * 2412 MHz [1] (16.0 dBm) * 2417 MHz [2] (16.0 dBm) * 2422 MHz [3] (16.0 dBm) * 2427 MHz [4] (16.0 dBm) * 2432 MHz [5] (16.0 dBm) * 2437 MHz [6] (16.0 dBm) * 2442 MHz [7] (16.0 dBm) * 2447 MHz [8] (16.0 dBm) * 2452 MHz [9] (16.0 dBm) * 2457 MHz [10] (16.0 dBm) * 2462 MHz [11] (16.0 dBm) * 2467 MHz [12] (16.0 dBm) (passive scanning) * 2472 MHz [13] (16.0 dBm) (passive scanning) * 2484 MHz [14] (disabled) Bitrates (non-HT): * 1.0 Mbps * 2.0 Mbps (short preamble supported) * 5.5 Mbps (short preamble supported) * 11.0 Mbps (short preamble supported) * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps Band 2: Capabilities: 0x11ce HT20/HT40 SM Power Save disabled RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 3839 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 8 usec (0x06) HT TX/RX MCS rate indexes supported: 0-15 Frequencies: * 5180 MHz [36] (15.0 dBm) (passive scanning, no IBSS) * 5200 MHz [40] (15.0 dBm) (passive scanning, no IBSS) * 5220 MHz [44] (15.0 dBm) (passive scanning, no IBSS) * 5240 MHz [48] (15.0 dBm) (passive scanning, no IBSS) * 5260 MHz [52] (17.0 dBm) (passive scanning, no IBSS, radar detection) * 5280 MHz [56] (14.0 dBm) (passive scanning, no IBSS, radar detection) * 5300 MHz [60] (14.0 dBm) (passive scanning, no IBSS, radar detection) * 5320 MHz [64] (14.0 dBm) (passive scanning, no IBSS, radar detection) * 5500 MHz [100] (disabled) * 5520 MHz [104] (disabled) * 5540 MHz [108] (disabled) * 5560 MHz [112] (disabled) * 5580 MHz [116] (disabled) * 5600 MHz [120] (disabled) * 5620 MHz [124] (disabled) * 5640 MHz [128] (disabled) * 5660 MHz [132] (disabled) * 5680 MHz [136] (disabled) * 5700 MHz [140] (disabled) * 5745 MHz [149] (17.0 dBm) (passive scanning, no IBSS) * 5765 MHz [153] (17.0 dBm) (passive scanning, no IBSS) * 5785 MHz [157] (17.0 dBm) (passive scanning, no IBSS) * 5805 MHz [161] (17.0 dBm) (passive scanning, no IBSS) * 5825 MHz [165] (17.0 dBm) (passive scanning, no IBSS) Bitrates (non-HT): * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps max # scan SSIDs: 4 max scan IEs length: 2257 bytes Coverage class: 0 (up to 0m) Supported Ciphers: * WEP40 (00-0f-ac:1) * WEP104 (00-0f-ac:5) * TKIP (00-0f-ac:2) * CCMP (00-0f-ac:4) * CMAC (00-0f-ac:6) Available Antennas: TX 0x3 RX 0x3 Configured Antennas: TX 0x3 RX 0x3 Supported interface modes: * IBSS * managed * AP * AP/VLAN * WDS * monitor * P2P-client * P2P-GO software interface modes (can always be added): * AP/VLAN * monitor interface combinations are not supported Supported commands: * new_interface * set_interface * new_key * new_beacon * new_station * set_bss * authenticate * associate * deauthenticate * disassociate * join_ibss * remain_on_channel * set_tx_bitrate_mask * action * frame_wait_cancel * set_wiphy_netns * set_channel * set_wds_peer * connect * disconnect Supported TX frame types: * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0 Supported RX frame types: * IBSS: 0xd0 * managed: 0x40 0xd0 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 * mesh point: 0xb0 0xc0 0xd0 * P2P-client: 0x40 0xd0 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0 Device supports RSN-IBSS. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
