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#1 2018-11-29 20:34:37

c0rax
Member
Registered: 2018-11-17
Posts: 5

HP Spectre x360 13-ap0003ns. Touchpad not detected

After attempting to boot multiple linux distros (ubuntu, arch, custom archiso) and realizing that the boot process froze, I assumed there was something wrong with a kernel module.

I narrowed it down to "intel_lpss_pci" and surely, blacklisting that module allowed me to boot into a functional X session. There are several things off about it (i.e. resolution, brightness, audio) but it's to be expected and something I imagine I'll be able to configure.

Unfortunately, the touchpad does not seem to be detected at all. I'm unsure if this is related to the module I had to blacklist (there is very little information about what it does online) but I can't seem to get libinput to recognize it.

Here is the output of "dmesg -e": https://gist.github.com/f24a5af11f5f2f3 … de5e00df2c (Note that this is on my custom archiso image, which has some extra software on it)

And here is the output of "libinput list-devices": https://gist.github.com/04ae051cf9948ca … a0b4604b58

Any insights on what to try or investigate are very welcome!

Last edited by c0rax (2018-11-29 20:52:28)

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#2 2018-11-29 21:41:52

c0rax
Member
Registered: 2018-11-17
Posts: 5

Re: HP Spectre x360 13-ap0003ns. Touchpad not detected

Some updates: I have managed to find the device under lsusb:

Bus 001 Device 002: ID 06cb:00bb Synaptics, Inc.

But it appears that there is no driver associated with it at all (usb-devices):

T:  Bus=01 Lev=01 Prnt=01 Port=08 Cnt=02 Dev#=  2 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=10 Prot=ff MxPS= 8 #Cfgs=  1
P:  Vendor=06cb ProdID=00bb Rev=01.64
S:  SerialNumber=728ba40777a1
C:  #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:  If#=0x0 Alt= 0 #EPs= 5 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)

Last edited by c0rax (2018-11-29 21:43:02)

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#3 2018-11-30 14:03:31

okubax
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From: London
Registered: 2010-04-24
Posts: 202
Website

Re: HP Spectre x360 13-ap0003ns. Touchpad not detected

Output of

dmesg | grep synaptics

?

Scrap that, went through your dmesg, your Synaptics touchpad is definitely not being recognized. Was the Synaptics touchpad detected by your system before you added the module?

Last edited by okubax (2018-11-30 14:20:17)

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#4 2018-11-30 15:42:11

progandy
Member
Registered: 2012-05-17
Posts: 3,195

Re: HP Spectre x360 13-ap0003ns. Touchpad not detected

Someone got it working with i8042.nopnp. https://forums.fedoraforum.org/showthre … &p=1815821

I think that kernel parameter is just a work-around, though and there should be some better way to add the device. You can report it to the linux-input mailing list, they might have a better idea if it is just a new device id to add or if you have to do some more debugging.
https://www.kernel.org/doc/html/latest/ … -bugs.html
linux-input@vger.kernel.org
https://www.spinics.net/lists/linux-input/

Edit: As for audio issues, you might be affected by this: https://bugzilla.kernel.org/show_bug.cgi?id=189331

Last edited by progandy (2018-11-30 15:43:12)


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#5 2018-12-01 11:01:57

c0rax
Member
Registered: 2018-11-17
Posts: 5

Re: HP Spectre x360 13-ap0003ns. Touchpad not detected

Thank you guys. I'm out for the weekend, but I'll try all of this as soon as I'm back!

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