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blackgr
May 15th, 2016, 06:25 PM
Hello,

I hope you are all well.
I have a dell latitude E7450 with the following wifi card: "Intel Corporation Wireless 7265".
Although this is an AC card, iwconfig reports "IEEE 802.11abgn".
I don't currently have an AC router. Is there a way to check if the linux drivers are AC ready?
Same behavior under 16.04.


$ lspci -nn | grep -i wireless
02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 59)




$ lsb_release -d
Description: Ubuntu 15.10


$ iwconfig wlan0
wlan0 IEEE 802.11abgn ESSID:"******"
Mode:Managed Frequency:2.412 GHz Access Point: ******
Bit Rate=1 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=59/70 Signal level=-51 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:135 Missed beacon:0


$ dmesg | grep iwlwifi
[ 2.600316] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[ 2.605934] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-15.ucode failed with error -2
[ 2.605966] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-14.ucode failed with error -2
[ 2.621500] iwlwifi 0000:02:00.0: loaded firmware version 25.30.13.0 op_mode iwlmvm
[ 2.686882] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
[ 2.687386] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 2.687991] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.579869] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.580478] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.643795] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.644345] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled



$ python ucode.py /lib/firmware/*7265D*.ucode
/lib/firmware/iwlwifi-7265D-10.ucode : ver 23.15.10.0 (stream:CoreCycle7_stab@128913)
/lib/firmware/iwlwifi-7265D-12.ucode : ver 25.17.12.0 (stream:CoreCycle9_stab_linux@145607)
/lib/firmware/iwlwifi-7265D-13.ucode : ver 25.30.13.0 (stream:CoreCycle10_stab@183742)


$ iw list
Wiphy phy0
max # scan SSIDs: 20
max scan IEs length: 425 bytes
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Device supports RSN-IBSS.
Device supports AP-side u-APSD.
Device supports T-DLS.
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 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
* P2P-client
* P2P-GO
* P2P-device
Band 1:
Capabilities: 0x11e3
RX LDPC
HT20/HT40
Static SM Power Save
RX HT20 SGI
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: 4 usec (0x05)
HT TX/RX MCS rate indexes supported: 0-15
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
Frequencies:
* 2412 MHz [1] (22.0 dBm)
* 2417 MHz [2] (22.0 dBm)
* 2422 MHz [3] (22.0 dBm)
* 2427 MHz [4] (22.0 dBm)
* 2432 MHz [5] (22.0 dBm)
* 2437 MHz [6] (22.0 dBm)
* 2442 MHz [7] (22.0 dBm)
* 2447 MHz [8] (22.0 dBm)
* 2452 MHz [9] (22.0 dBm)
* 2457 MHz [10] (22.0 dBm)
* 2462 MHz [11] (22.0 dBm)
* 2467 MHz [12] (22.0 dBm) (no IR)
* 2472 MHz [13] (22.0 dBm) (no IR)
* 2484 MHz [14] (disabled)
Band 2:
Capabilities: 0x11e3
RX LDPC
HT20/HT40
Static SM Power Save
RX HT20 SGI
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: 4 usec (0x05)
HT TX/RX MCS rate indexes supported: 0-15
VHT Capabilities (0x038071b0):
Max MPDU length: 3895
Supported Channel Width: neither 160 nor 80+80
RX LDPC
short GI (80 MHz)
TX STBC
SU Beamformee
VHT RX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT RX highest supported: 0 Mbps
VHT TX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT TX highest supported: 0 Mbps
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
Frequencies:
* 5180 MHz [36] (22.0 dBm) (no IR)
* 5200 MHz [40] (22.0 dBm) (no IR)
* 5220 MHz [44] (22.0 dBm) (no IR)
* 5240 MHz [48] (22.0 dBm) (no IR)
* 5260 MHz [52] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5280 MHz [56] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5300 MHz [60] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5320 MHz [64] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5500 MHz [100] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5520 MHz [104] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5540 MHz [108] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5560 MHz [112] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5580 MHz [116] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5600 MHz [120] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5620 MHz [124] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5640 MHz [128] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5660 MHz [132] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5680 MHz [136] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5700 MHz [140] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5720 MHz [144] (22.0 dBm) (no IR, radar detection)
DFS state: usable (for 1805 sec)
DFS CAC time: 60000 ms
* 5745 MHz [149] (22.0 dBm) (no IR)
* 5765 MHz [153] (22.0 dBm) (no IR)
* 5785 MHz [157] (22.0 dBm) (no IR)
* 5805 MHz [161] (22.0 dBm) (no IR)
* 5825 MHz [165] (22.0 dBm) (no IR)
Supported commands:
* new_interface
* set_interface
* new_key
* start_ap
* new_station
* new_mpath
* set_mesh_config
* set_bss
* authenticate
* associate
* deauthenticate
* disassociate
* join_ibss
* join_mesh
* remain_on_channel
* set_tx_bitrate_mask
* frame
* frame_wait_cancel
* set_wiphy_netns
* set_channel
* set_wds_peer
* tdls_mgmt
* tdls_oper
* start_sched_scan
* probe_client
* set_noack_map
* register_beacons
* start_p2p_device
* set_mcast_rate
* channel_switch
* Unknown command (104)
* Unknown command (105)
* 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
* P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
Supported RX frame types:
* IBSS: 0x40 0xb0 0xc0 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
* P2P-device: 0x40 0xd0
WoWLAN support:
* wake up on disconnect
* wake up on magic packet
* wake up on pattern match, up to 20 patterns of 16-128 bytes,
maximum packet offset 0 bytes
* can do GTK rekeying
* wake up on GTK rekey failure
* wake up on EAP identity request
* wake up on 4-way handshake
* wake up on rfkill release
* wake up on TCP connection
software interface modes (can always be added):
* AP/VLAN
* monitor
valid interface combinations:
* #{ managed } <= 1, #{ AP, P2P-client, P2P-GO } <= 1, #{ P2P-device } <= 1,
total <= 3, #channels <= 2
HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff
* maximum A-MSDU length
* supported channel width
* short GI for 40 MHz
* max A-MPDU length exponent
* min MPDU start spacing
Device supports TX status socket option.
Device supports HT-IBSS.
Device supports SAE with AUTHENTICATE command
Device supports low priority scan.
Device supports scan flush.
Device supports per-vif TX power setting
P2P GO supports CT window setting
P2P GO supports opportunistic powersave setting
Driver supports a userspace MPM
Device supports static SMPS
Device supports dynamic SMPS

Thanks,
Alex

blackgr
May 15th, 2016, 09:35 PM
After checking around, it seems that since the "iw list" output returns "VHT" entries, it does support AC.