Linux driver for fingerprint reader

[dariosm]

Hello, I'm using Ubuntu 17.10 on my Spectre x360, almost everything works with a fresh installation, but the fingerprint reader. I couldn't even find the device and tools like this won't recognize the hardware device.

Any suggestions? 

At least, I'd like to know the fingerprint reader specifications (brand and model).

[asg31]

Hi @dariosm,

I am very interested to know about your expeience with spectre and Linux. I am considering getting a spectre sometime soon.

Did you figure out a way to get this information for the fingerprint reader?

Providing good hardware with Linux support is a good selling factor for many developers. I really hope HP puts more effort in providing better linux support, compatible hardware or just enough information so that others can make it work.

[dariosm]

I still don't have any clue about how to get the fingerprint reader working. I'll post any updates here

[kings_way]

Can you post the device id of your fingerprint sensor?

The output of  command "lsusb && lsusb -v"  may be  enough.

[dariosm]

Is the fingerprint reader device USB? There is no information about a sensor device in lsusb outpout, only the camera and 2.0/3.0 hubs

[kings_way]

oops, I thought it is a usb device.... just like my HP Elitebook 9470m which  has a Validity Sensors and can be seen by "lsusb".

So, if lsusb do not get us the right info, let's try lspci 🙂

[dariosm]

Yeap, already tried but I couldn't find anything related to fingerprint reader or sensor.

00:00.0 Host bridge: Intel Corporation Device 5914 (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Device 5917 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 08)
00:13.0 Non-VGA unclassified device: Intel Corporation Device 9d35 (rev 21)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.1 PCI bridge: Intel Corporation Device 9d11 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1e.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO UART Controller #0 (rev 21)
00:1e.2 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO SPI Controller #0 (rev 21)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
6e:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961

[kings_way]

What about the dmesg ?

There may be something about unknown hardware devices from the kernel log.

Check it out and see if everything alright.

[kings_way]

Hi @dariosm,  after I got my spectre x360 13, I have done some research on it.

Firstly, I logined in windows and find out the Fingerpring Sensor Device is an ACPI device whose BIOS device name is

\_SB_.PCI0.SPI0.FPNT

Then I went to Linux to check something, and wrote a little script:

#!/bin/bash

# Print DMAR info from dmesg 
sudo dmesg | grep -i dmar


# lspci: show the device from dmesg
echo -e "\n\n"
lspci -vv -s "00:1e.2"


# Search the ACPI device with SPI in it's path
echo -e "\n\n"
for i in `ls /sys/bus/acpi/devices`;
do 
	cd /sys/bus/acpi/devices/$i;
	grep -q -i spi path 2> /dev/null; 
	if [ $? -eq 0 ]; 
	then 
		echo ====================================; 
		echo "/sys/bus/acpi/devices/$i"; 
		cat path; 
	fi; 
done

Finally, we got some output:

[    0.000000] ACPI: DMAR 0x000000002F4017C0 000114 (v01 HPQOEM 83B9     00000001 HP   00000001)
[    0.004000] DMAR: Host address width 39
[    0.004000] DMAR: DRHD base: 0x000000fed90000 flags: 0x0
[    0.004000] DMAR: dmar0: reg_base_addr fed90000 ver 1:0 cap 1c0000c40660462 ecap 19e2ff0505e
[    0.004000] DMAR: DRHD base: 0x000000fed91000 flags: 0x1
[    0.004000] DMAR: dmar1: reg_base_addr fed91000 ver 1:0 cap d2008c40660462 ecap f050da
[    0.004000] DMAR: RMRR base: 0x0000002eaf7000 end: 0x0000002eb16fff
[    0.004000] DMAR: RMRR base: 0x00000038800000 end: 0x0000003cffffff
[    0.004000] DMAR: ANDD device: 1 name: \_SB.PCI0.I2C0
[    0.004000] DMAR: ANDD device: 7 name: \_SB.PCI0.SPI0
[    0.004000] DMAR: ANDD device: 9 name: \_SB.PCI0.UA00
[    0.004000] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed91000 IOMMU 1
[    0.004000] DMAR-IR: HPET id 0 under DRHD base 0xfed91000
[    0.004000] DMAR-IR: x2apic is disabled because BIOS sets x2apic opt out bit.
[    0.004000] DMAR-IR: Use 'intremap=no_x2apic_optout' to override the BIOS setting.
[    0.004000] DMAR-IR: Enabled IRQ remapping in xapic mode
[    0.497544] DMAR: ACPI device "device:76" under DMAR at fed91000 as 00:15.0
[    0.497546] DMAR: ACPI device "device:77" under DMAR at fed91000 as 00:1e.2
[    0.497548] DMAR: ACPI device "device:78" under DMAR at fed91000 as 00:1e.0



00:1e.2 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO SPI Controller #0 (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP Serial IO SPI Controller
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin C routed to IRQ 22
	Region 0: Memory at dcc31000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: intel-lpss
	Kernel modules: intel_lpss_pci




====================================
/sys/bus/acpi/devices/device:77
\_SB_.PCI0.SPI0
====================================
/sys/bus/acpi/devices/INT3441:00
\_SB_.PCI0.SPI1
====================================
/sys/bus/acpi/devices/SYNA8003:00
\_SB_.PCI0.SPI0.FPNT

So, as we can see, Linux had successfully found the device(SYNA8003,  the same device name like what in Windows),  but got no driver to handle the device here.  I searched this keyword with Google but hardly found anything useful.

Some Refer:
https://www.kernel.org/doc/Documentation/acpi/enumeration.txt

https://www.kernel.org/doc/Documentation/Intel-IOMMU.txt

http://www.catalog.update.microsoft.com/ScopedViewInline.aspx?updateid=5ebf238c-deef-4945-b6f5-09fa9...

[AvG2019]

Anything new on this, or is the finger print scanner a dead end with eg Ubuntu 18.04 LTS?

Using an Elitebook 850 G5, over here.