Touchpad not detected on Lenovo S21e-20

[Rob van den Berg]

xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ USB OPTICAL MOUSE id=9 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
    ↳ Lenovo EasyCamera

cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:01/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input3
U: Uniq=
H: Handlers=sysrq kbd event3 leds
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input4
U: Uniq=
H: Handlers=kbd event4
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0003 Vendor=15d9 Product=0a4c Version=0111
N: Name=" USB OPTICAL MOUSE"
P: Phys=usb-0000:00:14.0-2/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:15D9:0A4C.0001/input/input5
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=0
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=103
B: MSC=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input6
U: Uniq=
H: Handlers=event6
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Front Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input7
U: Uniq=
H: Handlers=event7
B: PROP=0
B: EV=21
B: SW=4

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input8
U: Uniq=
H: Handlers=event8
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0003 Vendor=5986 Product=0674 Version=4207
N: Name="Lenovo EasyCamera"
P: Phys=usb-0000:00:14.0-3/button
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input9
U: Uniq=
H: Handlers=kbd event9
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-20-generic 4.10.0-20.22
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: rob 1146 F.... pulseaudio
CurrentDesktop: KDE
Date: Tue Apr 25 11:15:33 2017
InstallationDate: Installed on 2017-04-25 (0 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 005: ID 105b:e065 Foxconn International, Inc. BCM43142A0 Bluetooth module
 Bus 001 Device 004: ID 5986:0674 Acer, Inc
 Bus 001 Device 003: ID 15d9:0a4c Trust International B.V. USB+PS/2 Optical Mouse
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 80M4
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic root=UUID=b3f71244-6c48-4fcd-82a8-8f2c8c81307d ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.10.0-20-generic N/A
 linux-backports-modules-4.10.0-20-generic N/A
 linux-firmware 1.164
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/20/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: C4CN13WW(V1.03)
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Lenovo S21e-20
dmi.board.vendor: LENOVO
dmi.board.version: SDK0H15298 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo S21e-20
dmi.modalias: dmi:bvnLENOVO:bvrC4CN13WW(V1.03):bd01/20/2015:svnLENOVO:pn80M4:pvrLenovoS21e-20:rvnLENOVO:rnLenovoS21e-20:rvrSDK0H15298WIN:cvnLENOVO:ct10:cvrLenovoS21e-20:
dmi.product.name: 80M4
dmi.product.version: Lenovo S21e-20
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.11 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11-rc8

[Rob van den Berg (rghvdberg)]

This is a brand new install.
I'll test the new kernel when I have time (in a few hours)

[Rob van den Berg (rghvdberg)]

Mainline kernel didn't fix it.
Tagged and confirmed as per instructions

[Kai-Heng Feng (kaihengfeng)]

Can you test these kernel parameter, one by one:
i8042.nomux=1
i8042.reset=1
i8042.noloop=1
i8042.kbdreset=1
i8042.nopnp=1

[Rob van den Berg (rghvdberg)]

I tested with the parameters one by one but it made no difference.
Touchpad isn't detected

2017-05-04 6:50 GMT+02:00 Kai-Heng Feng <email address hidden>:

> Can you test these kernel parameter, one by one:
> i8042.nomux=1
> i8042.reset=1
> i8042.noloop=1
> i8042.kbdreset=1
> i8042.nopnp=1
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1686048
>
> Title:
> Touchpad not detected on Lenovo S21e-20
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1686048/+subscriptions
>

[Kai-Heng Feng (kaihengfeng)]

You need to file an upstream report then. It's at https://bugzilla.kernel.org/

[rghvdberg (rghvdberg-linux-kernel-bugs)]

Created attachment 256219
lshw

OS Kubuntu 17.04
Kernel 4.11.0-041100-generic (mainline)
The touchpad isn

I've tried several kernel paramaters

i8042.nomux=1
i8042.reset=1
i8042.noloop=1
i8042.kbdreset=1
i8042.nopnp=1
i8042.debug=1

[rghvdberg (rghvdberg-linux-kernel-bugs)]

Created attachment 256221
dmesg

[rghvdberg (rghvdberg-linux-kernel-bugs)]

Created attachment 256223
devices

[Rob van den Berg (rghvdberg)]

Thanks,

I file a bug https://bugzilla.kernel.org/show_bug.cgi?id=195669

2017-05-05 7:10 GMT+02:00 Kai-Heng Feng <email address hidden>:

> You need to file an upstream report then. It's at
> https://bugzilla.kernel.org/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1686048
>
> Title:
> Touchpad not detected on Lenovo S21e-20
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1686048/+subscriptions
>

[nikolas (nikolas-linux-kernel-bugs)]

Can you attach the output of `udevadm info -e` run as root?

[rghvdberg (rghvdberg-linux-kernel-bugs)]

NOTE : Currently on 4.9.48-1-MANJARO
output was too long so I pastebinned it

https://pastebin.com/HV6CRvFJ

[vbatts (vbatts-linux-kernel-bugs)]

This is still not working on 4.16.3 and 4.20.8 on Fedora
reading on https://alpha-labs.net/2015/08/lenovo-s21e-linux-and-the-touchpad/
it looks like there had been a fix floated for the hid-rmi module.

[vbatts (vbatts-linux-kernel-bugs)]

ah, sorry. This looks like an i2c elan touchpad issue. My apologies.
[vbatts@dhcp6-118 ~]$ dmesg | grep -i elan
[ 2.442191] i2c_hid i2c-ELAN0601:00: i2c-ELAN0601:00 supply vdd not found, using dummy regulator

[vbatts (vbatts-linux-kernel-bugs)]

Created attachment 281341
add the ELAN0601 ID

this is the patch i've emailed to Duson Lin

[vbatts (vbatts-linux-kernel-bugs)]

Confirmed the patch works on the Lenovo s21e-20 laptop with 5.0.0-rc8 kernel. Surely could be backported to other releases.

Duson's EMC email bounced. What subsystem should I mail this patch to

[dmitry.torokhov (dmitry.torokhov-linux-kernel-bugs)]

Please send to <email address hidden> CC <email address hidden> and <email address hidden>

I will need you signed-off-by in the patch description as per Documentation/SubmittingPatches.

Thanks!

[vbatts (vbatts-linux-kernel-bugs)]

sent

[vbatts (vbatts-linux-kernel-bugs)]

my fix for this has been merged into master and all stable branches back to v4.4
This issue can be closed now.