Re: Qualcomm Atheros QCA61x4 keeps drawing 0.85 W despite Bluetooth being disable in GNOME

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[Cc: +Rocky Liao as Qualcomm developer]

Dear Alan,


Thank you so much for continuous support in debugging this issue.

Am 20.11.23 um 19:10 schrieb Alan Stern:
On Mon, Nov 20, 2023 at 08:52:19AM +0100, Paul Menzel wrote:

Am 20.11.23 um 03:26 schrieb Alan Stern:
On Sun, Nov 19, 2023 at 11:09:32PM +0100, Paul Menzel wrote:
$ sudo modprobe btusb

$ grep . /sys/bus/usb/devices/1-3/power/*
/sys/bus/usb/devices/1-3/power/active_duration:119053224
/sys/bus/usb/devices/1-3/power/async:enabled
/sys/bus/usb/devices/1-3/power/autosuspend:2
/sys/bus/usb/devices/1-3/power/autosuspend_delay_ms:2000
/sys/bus/usb/devices/1-3/power/connected_duration:148065372
/sys/bus/usb/devices/1-3/power/control:auto
/sys/bus/usb/devices/1-3/power/level:auto
/sys/bus/usb/devices/1-3/power/persist:1
/sys/bus/usb/devices/1-3/power/runtime_active_kids:0
/sys/bus/usb/devices/1-3/power/runtime_active_time:119060567
/sys/bus/usb/devices/1-3/power/runtime_enabled:enabled
/sys/bus/usb/devices/1-3/power/runtime_status:active
/sys/bus/usb/devices/1-3/power/runtime_suspended_time:28831453
/sys/bus/usb/devices/1-3/power/runtime_usage:0
/sys/bus/usb/devices/1-3/power/wakeup:disabled
```

Hmmm.  It's not immediately clear why the device isn't being suspended.
The btusb driver does support autosuspend.

Can you also post the output from

	grep . /sys/bus/usb/devices/1-3:*/power/*

with the driver module loaded?  I should have asked for it before.

```
$ sudo modprobe btusb
$ sudo dmesg | tail -9
[319747.390712] r8152 4-1.2:1.0 enx18dbf22dccf3: carrier on
[320256.946094] bluetooth hci0: firmware: direct-loading firmware qca/rampatch_usb_00000302.bin
[320256.949333] Bluetooth: hci0: using rampatch file: qca/rampatch_usb_00000302.bin
[320256.949349] Bluetooth: hci0: QCA: patch rome 0x302 build 0x3e8, firmware rome 0x302 build 0x111
[320256.949643] usbcore: registered new interface driver btusb
[320257.308935] bluetooth hci0: firmware: direct-loading firmware qca/nvm_usb_00000302.bin
[320257.309043] Bluetooth: hci0: using NVM file: qca/nvm_usb_00000302.bin
[320257.336220] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[320257.638188] Bluetooth: MGMT ver 1.22
$ /sbin/rfkill
ID TYPE      DEVICE    SOFT      HARD
  1 wlan      phy0   blocked unblocked
 28 bluetooth hci0   blocked unblocked
$ grep . /sys/bus/usb/devices/1-3:*/power/*
/sys/bus/usb/devices/1-3:1.0/power/async:enabled
/sys/bus/usb/devices/1-3:1.0/power/runtime_active_kids:0
/sys/bus/usb/devices/1-3:1.0/power/runtime_enabled:enabled
/sys/bus/usb/devices/1-3:1.0/power/runtime_status:suspended
/sys/bus/usb/devices/1-3:1.0/power/runtime_usage:0
/sys/bus/usb/devices/1-3:1.1/power/async:enabled
/sys/bus/usb/devices/1-3:1.1/power/runtime_active_kids:0
/sys/bus/usb/devices/1-3:1.1/power/runtime_enabled:enabled
/sys/bus/usb/devices/1-3:1.1/power/runtime_status:suspended
/sys/bus/usb/devices/1-3:1.1/power/runtime_usage:0
```

Again, nothing out of the ordinary.  Maybe dynamic debugging will give
us a clue.  Try doing this:

	Unload the btusb module.

	echo module usbcore +p >/sys/kernel/debug/dynamic_debug/control

	Load the btusb module

	Make sure that Bluetooth is turned off in Gnome

	Wait a few seconds

	echo module usbcore -p >/sys/kernel/debug/dynamic_debug/control

Then let's see what the dmesg log contains for that time period.


```
$ sudo modprobe -r btusb
$ sudo dmesg | tail -1
[340309.272439] usbcore: deregistering interface driver btusb
$ echo module usbcore +p | sudo tee /sys/kernel/debug/dynamic_debug/control
module usbcore +p
$ sudo modprobe btusb
$ /sbin/rfkill
ID TYPE      DEVICE      SOFT      HARD
 1 wlan      phy0   unblocked unblocked
36 bluetooth hci0     blocked unblocked
$ echo module usbcore -p | sudo tee /sys/kernel/debug/dynamic_debug/control
module usbcore -p
$ sudo modprobe -r btusb
$ sudo dmesg | tail -1
[340608.761313] usbcore: deregistering interface driver btusb
$ sudo dmesg
[…]
[340309.272439] usbcore: deregistering interface driver btusb
[340560.326182] xhci_hcd 0000:00:14.0: hcd_pci_runtime_resume: 0
[340560.326214] usb usb1: usb auto-resume
[340560.326258] hub 1-0:1.0: hub_resume
[340560.326381] usb usb1-port3: status 0107 change 0000
[340560.326418] usb usb1-port4: status 0107 change 0000
[340560.326451] usb usb1-port5: status 0507 change 0000
[340560.326650] hub 1-0:1.0: state 7 ports 12 chg 0000 evt 0000
[340560.326807] hub 1-0:1.0: state 7 ports 12 chg 0000 evt 0000
[340560.373988] usb 1-3: usb auto-resume
[340560.373998] hub 1-0:1.0: state 7 ports 12 chg 0000 evt 0008
[340560.441936] usb 1-3: Waited 0ms for CONNECT
[340560.441957] usb 1-3: finish reset-resume
[340560.570940] usb 1-3: reset full-speed USB device number 2 using xhci_hcd
[340560.721096] btusb 1-3:1.0: usb_probe_interface
[340560.721126] btusb 1-3:1.0: usb_probe_interface - got id
[340560.723193] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[340560.728684] usbcore: registered new interface driver btusb
[340560.902021] Bluetooth: MGMT ver 1.22
[340608.761313] usbcore: deregistering interface driver btusb
```

So, unfortunately, nothing seems to be logged in the 48 seconds.

Also, please post the output from "lsusb -v" for the Bluetooth device.

```
$ sudo lsusb -d 0cf3:e300 -v

Bus 001 Device 002: ID 0cf3:e300 Qualcomm Atheros Communications QCA61x4 Bluetooth 4.0
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.01
  bDeviceClass          224 Wireless
  bDeviceSubClass         1 Radio Frequency
  bDeviceProtocol         1 Bluetooth
  bMaxPacketSize0        64
  idVendor           0x0cf3 Qualcomm Atheros Communications
  idProduct          0xe300 QCA61x4 Bluetooth 4.0
  bcdDevice            0.01
  iManufacturer           0
  iProduct                0
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x00b1
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0000  1x 0 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0009  1x 9 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0009  1x 9 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       2
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0011  1x 17 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0011  1x 17 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       3
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0019  1x 25 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0019  1x 25 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       4
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0021  1x 33 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0021  1x 33 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       5
      bNumEndpoints           2
      bInterfaceClass       224 Wireless
      bInterfaceSubClass      1 Radio Frequency
      bInterfaceProtocol      1 Bluetooth
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0031  1x 49 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0031  1x 49 bytes
        bInterval               1
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength       0x000c
  bNumDeviceCaps          1
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      HIRD Link Power Management (LPM) Supported
Device Status:     0x0001
  Self Powered
```






Kind regards,

Paul


PS: Somewhere, I saw somebody post the output of `usb-devices` from usb-utils. So for the record:

```
$ usb-devices

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480  MxCh=12
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev=06.05
S:  Manufacturer=Linux 6.5.0-4-amd64 xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms

T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  2 Spd=12   MxCh= 0
D:  Ver= 2.01 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0cf3 ProdID=e300 Rev=00.01
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none)
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms

T:  Bus=01 Lev=01 Prnt=02 Port=03 Cnt=01 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=04f3 ProdID=2234 Rev=11.11
S:  Manufacturer=ELAN
S:  Product=Touchscreen
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid
E:  Ad=02(O) Atr=03(Int.) MxPS=  32 Ivl=2ms
E:  Ad=81(I) Atr=03(Int.) MxPS=  64 Ivl=1ms

T:  Bus=01 Lev=01 Prnt=03 Port=04 Cnt=01 Dev#=  4 Spd=480  MxCh= 0
D:  Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0c45 ProdID=670c Rev=56.26
S:  Manufacturer=CN09GTFMLOG008C8B7FWA01
S:  Product=Integrated_Webcam_HD
C:  #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
E:  Ad=83(I) Atr=03(Int.) MxPS=  16 Ivl=4ms
I:  If#= 1 Alt= 0 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 6
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=06.05
S:  Manufacturer=Linux 6.5.0-4-amd64 xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms
```

PPS: Looking through the commit log/history for `drivers/bluetooth/btusb.c`, I found commit 7ecacafc2406 (Bluetooth: btusb: Disable runtime suspend on Realtek devices) [1] authored on December 5th, 2019. This is for Realtek devices though, and not Qualcomm.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7ecacafc240638148567742cca41aa7144b4fe1e




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