I recently saw on this mailing list that the intel firmware patches
have been updated, so I downloaded the latest firmware to see it being
applied on my Asus TP300L computer with Intel Bluetooth 7260:
[ 2044.429868] usb 1-1.4: new full-speed USB device number 8 using ehci-pci
[ 2044.524374] usb 1-1.4: New USB device found, idVendor=8087, idProduct=07dc
[ 2044.524383] usb 1-1.4: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 2044.539193] Bluetooth: hci0: read Intel version: 3707100180012d0d00
[ 2044.539242] Bluetooth: hci0: Intel Bluetooth firmware file:
intel/ibt-hw-37.7.10-fw-1.80.1.2d.d.bseq
[ 2044.728245] Bluetooth: hci0: Intel Bluetooth firmware patch
completed and activated
[ 2394.965515] usb 1-1.4: reset full-speed USB device number 8 using ehci-pci
[ 2395.072161] Bluetooth: hci0: read Intel version: 3707100180012d0d27
[ 2395.072167] Bluetooth: hci0: Intel device is already patched. patch num: 27
I have a custom application talking HCI directly and according to the
LE supported states it supports both scanning and initiating a
connection at the same time. But if I start a LE scan and then
initiate a connection, it fails with the error code Connection
Rejected due to Limited Resources (0x0d). If I however do it the other
way around, first starting the connection attempt followed by starting
scan, everything works as normal. This is clearly a bug in the
firmware so I was just wondering if there were any Intel guys here
willing to fix this? I've actually seen the same problem as well on a
cheap Android Asus tablet having some Intel bluetooth chip in a snoop
log.
This is btmon log where it fails:
< HCI Command: Reset (0x03|0x0003) plen 0
[hci0] 2238.125717
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2238.138612
Reset (0x03|0x0003) ncmd 2
Status: Success (0x00)
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
[hci0] 2238.138702
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 2238.139583
Read Local Version Information (0x04|0x0001) ncmd 1
Status: Success (0x00)
HCI version: Bluetooth 4.0 (0x06) - Revision 3584 (0x0e00)
LMP version: Bluetooth 4.0 (0x06) - Subversion 3584 (0x0e00)
Manufacturer: Intel Corp. (2)
< HCI Command: LE Read Supported States (0x08|0x001c) plen 0
[hci0] 2238.139624
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 2238.140580
LE Read Supported States (0x08|0x001c) ncmd 1
Status: Success (0x00)
States: 0x000000001fffffff
Non-connectable Advertising State
Scannable Advertising State
Connectable Advertising State
High Duty Cycle Directed Advertising State
Passive Scanning State
Active Scanning State
Initiating State
and Connection State (Master Role)
Connection State (Slave Role)
Non-connectable Advertising State
and Passive Scanning State
Scannable Advertising State
and Passive Scanning State
Connectable Advertising State
and Passive Scanning State
High Duty Cycle Directed Advertising State
and Passive Scanning State
Non-connectable Advertising State
and Active Scanning State
Scannable Advertising State
and Active Scanning State
Connectable Advertising State
and Active Scanning State
High Duty Cycle Directed Advertising State
and Active Scanning State
Non-connectable Advertising State
and Initiating State
Scannable Advertising State
and Initiating State
Non-connectable Advertising State
and Connection State (Master Role)
Scannable Advertising State
and Connection State (Master Role)
Non-connectable Advertising State
and Connection State (Slave Role)
Scannable Advertising State
and Connection State (Slave Role)
Passive Scanning State
and Initiating State
Active Scanning State
and Initiating State
Passive Scanning State
and Connection State (Master Role)
Active Scanning State
and Connection State (Master Role)
Passive Scanning State
and Connection State (Slave Role)
Active Scanning State
and Connection State (Slave Role)
Initiating State
and Connection State (Master Role)
and Master Role & Master Role
< HCI Command: Set Event Mask (0x03|0x0001) plen 8
[hci0] 2238.140615
Mask: 0x2000000000018010
Disconnection Complete
Hardware Error
Flush Occurred
LE Meta
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2238.141588
Set Event Mask (0x03|0x0001) ncmd 1
Status: Success (0x00)
< HCI Command: Set Controller To Host Flow Control (0x03|0x0031) plen
1 [hci0] 2238.141631
Flow control: Off (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2238.142587
Set Controller To Host Flow Control (0x03|0x0031) ncmd 1
Status: Success (0x00)
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0
[hci0] 2238.142628
> HCI Event: Command Complete (0x0e) plen 10 [hci0] 2238.143580
Read BD ADDR (0x04|0x0009) ncmd 1
Status: Success (0x00)
Address: 80:19:34:A6:44:B4 (Intel Corporate)
< HCI Command: LE Read Buffer Size (0x08|0x0002) plen 0
[hci0] 2238.143785
> HCI Event: Command Complete (0x0e) plen 7 [hci0] 2238.144579
LE Read Buffer Size (0x08|0x0002) ncmd 1
Status: Success (0x00)
Data packet length: 27
Num data packets: 7
< HCI Command: LE Read White List Size (0x08|0x000f) plen 0
[hci0] 2238.144607
> HCI Event: Command Complete (0x0e) plen 5 [hci0] 2238.145573
LE Read White List Size (0x08|0x000f) ncmd 1
Status: Success (0x00)
Size: 32
< HCI Command: LE Clear White List (0x08|0x0010) plen 0
[hci0] 2238.145649
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2238.146580
LE Clear White List (0x08|0x0010) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7
[hci0] 2238.146610
Type: Passive (0x00)
Interval: 11.250 msec (0x0012)
Window: 11.250 msec (0x0012)
Own address type: Public (0x00)
Filter policy: Accept all advertisement (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2238.147569
LE Set Scan Parameters (0x08|0x000b) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
[hci0] 2278.538597
Scanning: Enabled (0x01)
Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2278.539579
LE Set Scan Enable (0x08|0x000c) ncmd 2
Status: Success (0x00)
< HCI Command: LE Add Device To White List (0x08|0x0011) plen 7
[hci0] 2283.040471
Address type: Public (0x00)
Address: 80:E4:DA:70:57:6F (OUI 80-E4-DA)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2283.041654
LE Add Device To White List (0x08|0x0011) ncmd 1
Status: Success (0x00)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25
[hci0] 2283.041752
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is used (0x01)
Peer address type: Public (0x00)
Peer address: 00:00:00:00:00:00 (OUI 00-00-00)
Own address type: Public (0x00)
Min connection interval: 20.00 msec (0x0010)
Max connection interval: 25.00 msec (0x0014)
Connection latency: 0x0000
Supervision timeout: 200 msec (0x0014)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 [hci0] 2283.042597
LE Create Connection (0x08|0x000d) ncmd 1
Status: Connection Rejected due to Limited Resources (0x0d)
And this is the btmon log where the commands are sent in the other order:
< HCI Command: Reset (0x03|0x0003) plen 0
[hci0] 2639.104712
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2639.117781
Reset (0x03|0x0003) ncmd 2
Status: Success (0x00)
< HCI Command: Read Local Version Information (0x04|0x0001) plen 0
[hci0] 2639.117842
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 2639.118772
Read Local Version Information (0x04|0x0001) ncmd 1
Status: Success (0x00)
HCI version: Bluetooth 4.0 (0x06) - Revision 3584 (0x0e00)
LMP version: Bluetooth 4.0 (0x06) - Subversion 3584 (0x0e00)
Manufacturer: Intel Corp. (2)
< HCI Command: LE Read Supported States (0x08|0x001c) plen 0
[hci0] 2639.118818
> HCI Event: Command Complete (0x0e) plen 12 [hci0] 2639.119771
LE Read Supported States (0x08|0x001c) ncmd 1
Status: Success (0x00)
States: 0x000000001fffffff
Non-connectable Advertising State
Scannable Advertising State
Connectable Advertising State
High Duty Cycle Directed Advertising State
Passive Scanning State
Active Scanning State
Initiating State
and Connection State (Master Role)
Connection State (Slave Role)
Non-connectable Advertising State
and Passive Scanning State
Scannable Advertising State
and Passive Scanning State
Connectable Advertising State
and Passive Scanning State
High Duty Cycle Directed Advertising State
and Passive Scanning State
Non-connectable Advertising State
and Active Scanning State
Scannable Advertising State
and Active Scanning State
Connectable Advertising State
and Active Scanning State
High Duty Cycle Directed Advertising State
and Active Scanning State
Non-connectable Advertising State
and Initiating State
Scannable Advertising State
and Initiating State
Non-connectable Advertising State
and Connection State (Master Role)
Scannable Advertising State
and Connection State (Master Role)
Non-connectable Advertising State
and Connection State (Slave Role)
Scannable Advertising State
and Connection State (Slave Role)
Passive Scanning State
and Initiating State
Active Scanning State
and Initiating State
Passive Scanning State
and Connection State (Master Role)
Active Scanning State
and Connection State (Master Role)
Passive Scanning State
and Connection State (Slave Role)
Active Scanning State
and Connection State (Slave Role)
Initiating State
and Connection State (Master Role)
and Master Role & Master Role
< HCI Command: Set Event Mask (0x03|0x0001) plen 8
[hci0] 2639.119796
Mask: 0x2000000000018010
Disconnection Complete
Hardware Error
Flush Occurred
LE Meta
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2639.120773
Set Event Mask (0x03|0x0001) ncmd 1
Status: Success (0x00)
< HCI Command: Set Controller To Host Flow Control (0x03|0x0031) plen
1 [hci0] 2639.120800
Flow control: Off (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2639.121775
Set Controller To Host Flow Control (0x03|0x0031) ncmd 1
Status: Success (0x00)
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0
[hci0] 2639.121799
> HCI Event: Command Complete (0x0e) plen 10 [hci0] 2639.122772
Read BD ADDR (0x04|0x0009) ncmd 1
Status: Success (0x00)
Address: 80:19:34:A6:44:B4 (Intel Corporate)
< HCI Command: LE Read Buffer Size (0x08|0x0002) plen 0
[hci0] 2639.122952
> HCI Event: Command Complete (0x0e) plen 7 [hci0] 2639.123772
LE Read Buffer Size (0x08|0x0002) ncmd 1
Status: Success (0x00)
Data packet length: 27
Num data packets: 7
< HCI Command: LE Read White List Size (0x08|0x000f) plen 0
[hci0] 2639.123803
> HCI Event: Command Complete (0x0e) plen 5 [hci0] 2639.124771
LE Read White List Size (0x08|0x000f) ncmd 1
Status: Success (0x00)
Size: 32
< HCI Command: LE Clear White List (0x08|0x0010) plen 0
[hci0] 2639.124829
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2639.125780
LE Clear White List (0x08|0x0010) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7
[hci0] 2639.125824
Type: Passive (0x00)
Interval: 11.250 msec (0x0012)
Window: 11.250 msec (0x0012)
Own address type: Public (0x00)
Filter policy: Accept all advertisement (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2639.126797
LE Set Scan Parameters (0x08|0x000b) ncmd 1
Status: Success (0x00)
< HCI Command: LE Add Device To White List (0x08|0x0011) plen 7
[hci0] 2677.822165
Address type: Public (0x00)
Address: 80:E4:DA:70:57:6F (OUI 80-E4-DA)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2677.822857
LE Add Device To White List (0x08|0x0011) ncmd 1
Status: Success (0x00)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25
[hci0] 2677.822939
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is used (0x01)
Peer address type: Public (0x00)
Peer address: 00:00:00:00:00:00 (OUI 00-00-00)
Own address type: Public (0x00)
Min connection interval: 20.00 msec (0x0010)
Max connection interval: 25.00 msec (0x0014)
Connection latency: 0x0000
Supervision timeout: 200 msec (0x0014)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 [hci0] 2677.823814
LE Create Connection (0x08|0x000d) ncmd 2
Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
[hci0] 2686.689549
Scanning: Enabled (0x01)
Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 2686.690890
LE Set Scan Enable (0x08|0x000c) ncmd 2
Status: Success (0x00)
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