I agree. I wrote to the bluetooth linux driver maintainer and I will
tell him that too.

2015-05-02 22:47 GMT+03:00 Raphaël Jakse <email address hidden>:
> I'm running your kernel with your extra. It took very long to boot
> (somewhere it waits for 3 minutes (saying so), I don't know why).
> journalctl -xe gives continuous USB disconnect / new USB device and
> bluetooth is not working, acting the way I described in comment #13.
> Rebooting to the -15 kernel will make everything work, bluetooth
> included, I guess.
>
> Seems like a bug in the firmware or the driver.
>
> Le 02/05/2015 21:32, Pilot6 a écrit :
>> Maybe you did not install extra of my image either? Try to download
>> the files again and install one more time.
>>
>> 2015-05-02 22:22 GMT+03:00 Raphaël Jakse <email address hidden>:
>>> My bad, I didn't install linux-image-extra from ubuntu updates. In fact
>>> 3.19.0-16 unpatched is running fine with this package.
>>>
>>> But this makes stranger the fact that your 3 line patch makes my
>>> computer unstable but at the same time let the bluetooth + the whole
>>> stuff work correctly on another kernel after reboot.
>>>
>>> --
>>> You received this bug notification because you are subscribed to the bug
>>> report.
>>> https://bugs.launchpad.net/bugs/1397885
>>>
>>> Title:
>>>    [Atheros AR9462] Bluetooth looks activated but cannot be used
>>>
>>> Status in bluez package in Ubuntu:
>>>    Confirmed
>>>
>>> Bug description:
>>>    Ubuntu 14.10
>>>
>>>    System Information
>>>          Manufacturer: Acer
>>>          Product Name: Aspire VN7-591G
>>>          Version: V1.08
>>>          SKU Number: Aspire VN7-591G_091B_1.08
>>>          Family: Sharkbay System
>>>
>>>    lspci
>>>    07:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01)
>>>
>>>
>>>    lsusb -v
>>>    Bus 003 Device 006: ID 04ca:300d Lite-On Technology Corp.
>>>
>>>
>>>    Steps to reproduce:
>>>    1. Activate a Bluetooth device (for instance a mouse or a nearby device)
>>>    2. On the laptop, press the Bluetooth icon, then "Set Up new Device…"
>>>
>>>    Expected result:
>>>    2. A list of available bluetooth devices is shown
>>>
>>>    Actual result:
>>>    2. Nothing shows up and the spinning icon keeps spinning with "Searching for devices..."
>>>
>>>    It looks like the bluetooth device does not work at all.
>>>
>>>    Apparently, there have been previous bugs reported and corrected [1],
>>>    but the situation still occurs with this module on my laptop...
>>>
>>>    [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1024884
>>>
>>>    ProblemType: Bug
>>>    DistroRelease: Ubuntu 14.10
>>>    Package: bluez 4.101-0ubuntu20
>>>    ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
>>>    Uname: Linux 3.16.0-25-generic x86_64
>>>    ApportVersion: 2.14.7-0ubuntu8
>>>    Architecture: amd64
>>>    CurrentDesktop: Unity
>>>    Date: Mon Dec  1 16:35:17 2014
>>>    EcryptfsInUse: Yes
>>>    InstallationDate: Installed on 2014-11-15 (15 days ago)
>>>    InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
>>>    InterestingModules: bnep rfcomm btusb bluetooth
>>>    MachineType: Acer Aspire VN7-591G
>>>    ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
>>>    SourcePackage: bluez
>>>    UpgradeStatus: No upgrade log present (probably fresh install)
>>>    dmi.bios.date: 09/12/2014
>>>    dmi.bios.vendor: Insyde Corp.
>>>    dmi.bios.version: V1.08
>>>    dmi.board.asset.tag: No Asset Tag
>>>    dmi.board.name: Aspire VN7-591G
>>>    dmi.board.vendor: Acer
>>>    dmi.board.version: V1.08
>>>    dmi.chassis.asset.tag: No Asset Tag
>>>    dmi.chassis.type: 10
>>>    dmi.chassis.vendor: Chassis Manufacturer
>>>    dmi.chassis.version: V1.08
>>>    dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.08:bd09/12/2014:svnAcer:pnAspireVN7-591G:pvrV1.08:rvnAcer:rnAspireVN7-591G:rvrV1.08:cvnChassisManufacturer:ct10:cvrV1.08:
>>>    dmi.product.name: Aspire VN7-591G
>>>    dmi.product.version: V1.08
>>>    dmi.sys.vendor: Acer
>>>    hciconfig:
>>>     hci0:        Type: BR/EDR  Bus: USB
>>>          BD Address: 5C:93:A2:EB:FF:43  ACL MTU: 1022:8  SCO MTU: 183:5
>>>          UP RUNNING PSCAN ISCAN
>>>          RX bytes:2751 acl:0 sco:0 events:351 errors:0
>>>          TX bytes:3779 acl:0 sco:0 commands:306 errors:0
>>>    syslog:
>>>     Dec  1 16:21:16 Miles bluetoothd[631]: Discovery session 0x7fa5da51da30 with :1.228 activated
>>>     Dec  1 16:27:43 Miles bluetoothd[631]: Discovery session 0x7fa5da530a50 with :1.230 activated
>>>
>>> To manage notifications about this bug go to:
>>> https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1397885/+subscriptions
>
>
> --
> Raphaël Jakse
> Étudiant M1 Informatique
> Université Joseph Fourier - Grenoble
>
> Année 2013-2014 : L3 Informatique - UJF - Grenoble
> Année 2012-2013 : L2 Informatique - UJF - Grenoble
> Année 2011-2012 : 1A CPP - La prépa des INP - Grenoble
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1397885
>
> Title:
>   [Atheros AR9462] Bluetooth looks activated but cannot be used
>
> Status in bluez package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Ubuntu 14.10
>
>   System Information
>         Manufacturer: Acer
>         Product Name: Aspire VN7-591G
>         Version: V1.08
>         SKU Number: Aspire VN7-591G_091B_1.08
>         Family: Sharkbay System
>
>   lspci
>   07:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01)
>
>
>   lsusb -v
>   Bus 003 Device 006: ID 04ca:300d Lite-On Technology Corp.
>
>
>   Steps to reproduce:
>   1. Activate a Bluetooth device (for instance a mouse or a nearby device)
>   2. On the laptop, press the Bluetooth icon, then "Set Up new Device…"
>
>   Expected result:
>   2. A list of available bluetooth devices is shown
>
>   Actual result:
>   2. Nothing shows up and the spinning icon keeps spinning with "Searching for devices..."
>
>   It looks like the bluetooth device does not work at all.
>
>   Apparently, there have been previous bugs reported and corrected [1],
>   but the situation still occurs with this module on my laptop...
>
>   [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1024884
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 14.10
>   Package: bluez 4.101-0ubuntu20
>   ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
>   Uname: Linux 3.16.0-25-generic x86_64
>   ApportVersion: 2.14.7-0ubuntu8
>   Architecture: amd64
>   CurrentDesktop: Unity
>   Date: Mon Dec  1 16:35:17 2014
>   EcryptfsInUse: Yes
>   InstallationDate: Installed on 2014-11-15 (15 days ago)
>   InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
>   InterestingModules: bnep rfcomm btusb bluetooth
>   MachineType: Acer Aspire VN7-591G
>   ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
>   SourcePackage: bluez
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 09/12/2014
>   dmi.bios.vendor: Insyde Corp.
>   dmi.bios.version: V1.08
>   dmi.board.asset.tag: No Asset Tag
>   dmi.board.name: Aspire VN7-591G
>   dmi.board.vendor: Acer
>   dmi.board.version: V1.08
>   dmi.chassis.asset.tag: No Asset Tag
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: Chassis Manufacturer
>   dmi.chassis.version: V1.08
>   dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.08:bd09/12/2014:svnAcer:pnAspireVN7-591G:pvrV1.08:rvnAcer:rnAspireVN7-591G:rvrV1.08:cvnChassisManufacturer:ct10:cvrV1.08:
>   dmi.product.name: Aspire VN7-591G
>   dmi.product.version: V1.08
>   dmi.sys.vendor: Acer
>   hciconfig:
>    hci0:        Type: BR/EDR  Bus: USB
>         BD Address: 5C:93:A2:EB:FF:43  ACL MTU: 1022:8  SCO MTU: 183:5
>         UP RUNNING PSCAN ISCAN
>         RX bytes:2751 acl:0 sco:0 events:351 errors:0
>         TX bytes:3779 acl:0 sco:0 commands:306 errors:0
>   syslog:
>    Dec  1 16:21:16 Miles bluetoothd[631]: Discovery session 0x7fa5da51da30 with :1.228 activated
>    Dec  1 16:27:43 Miles bluetoothd[631]: Discovery session 0x7fa5da530a50 with :1.230 activated
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1397885/+subscriptions