[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=73081

Dmitry Khromov <icechrome@gmail.com> changed:

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                 CC|                            |icechrome@gmail.com

--- Comment #1 from Dmitry Khromov <icechrome@gmail.com> ---
Same here, on Venue 8 Pro.
Actually, the protocol Windows is using is H4, nevertheless, it doesn't work
also.
This snippet from DSDT table (BTH0 entry, DLAC3002) specifies the UART settings
that Windows (supposedly) uses:
UartSerialBus (0x0001C200, DataBitsEight, StopBitsOne, 0xC0, LittleEndian,
ParityTypeNone, FlowControlHardware, 0x0020, 0x0020, "\\_SB.URT1", 0x00,
ResourceConsumer, ,)
URT1 is /dev/ttyS4 in my config, the interesting thing is that there's no bytes
inbound at all - looks like the BT module is simply unpowered, no matter if I
attach an rfkill-gpio (like Jin above), or drive GPIOs manually (via
/sys/bus/gpio).
So, it's unlikely a kernel bug (and may be closed as such).

Jin. had you ever succeed in getting this piece working?

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

Jianlong Liu <lvlrdka22@gmail.com> changed:

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                 CC|                            |lvlrdka22@gmail.com

--- Comment #2 from Jianlong Liu <lvlrdka22@gmail.com> ---
Same here, not working on Venue 8 Pro. Adding the ACPI ID doesn't result in
anything.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #3 from Jianlong Liu <lvlrdka22@gmail.com> ---
Forgot to mention, this was tested on kernel 4.4.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

Hytham (hytham@gmail.com) changed:

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                 CC|                            |hytham@gmail.com

--- Comment #4 from Hytham (hytham@gmail.com) ---
Has anyone been able to resolve this issue? I installed Ubuntu 2022 LTR but I
yet have the same issue with both WiFi and Bluetooth.

I would be okay with WiFi not working if I could at least get Bluetooth working
without using a dongle. That way I could attach my tablet to a Keyboard case
and use it for notes etc.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) changed:

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                 CC|                            |pmenzel+bugzilla.kernel.org
                   |                            |@molgen.mpg.de

--- Comment #5 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Puh, that is an old issue, and no attachments. Please attach the output of
`dmesg` and all other things asked for if you create a new issue in
https://github.com/bluez/bluez/issues.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #6 from Hytham (hytham@gmail.com) ---
Thanks Paul, please find my dmesg.log and new issue here:

https://github.com/bluez/bluez/issues/2222

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #7 from Dmitry Khromov (icechrome@gmail.com) ---
If memory serves, the MMIO-mapped UART requires
CONFIG_SERIAL_DEV_CTRL_TTYPORT=y for a port to be picked up by BlueZ. This, in
turn, requires CONFIG_SERIAL_DEV_BUS=y, but most desktop distros ship a kernel
with CONFIG_SERIAL_DEV_BUS=m.

Long story short, I was successful in bringing Bluetooth up and running on
Venue 8 Pro back in the day, so try compiling a kernel with the configuration
flags mentioned. No further action should be required -- BlueZ should
automatically pick the port up and attach the HCI.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #8 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
At least Debian’s Linux kernel (6.1 and 7.1 from suite *experimental*) have it
set to `CONFIG_SERIAL_DEV_BUS=y`. @Hytham, please check your Ubuntu Linux
kernel config in `/boot/`, for example with `grep CONFIG_SERIAL_DEV_BUS
/boot/config*`.

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #9 from Hytham (hytham@gmail.com) ---
Hi Paul,

Yes, I confirmed that the kernel I already have in /boot has
CONFIG_SERIAL_DEV_BUG=y.

Thanks,
Hytham

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[Bug 73081] Fail to setup Bluetooth on Dell Venue 11 Pro

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https://bugzilla.kernel.org/show_bug.cgi?id=73081

--- Comment #10 from Dmitry Khromov (icechrome@gmail.com) ---
My apologies for misleading, that was a hunch from back then.

From your dmesg log I notice the kernel fails to find the WiFi/Bluetooth chip
firmware. You should grab it from

https://github.com/qca/ath6kl-firmware/tree/master/ath6k/AR6004/hw3.0

which is where I got it the last time and put into
`/lib/firmware/ath6k/AR6004/hw3.0` if you haven't done so already.

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