Arch Linux

I can confirm this issue, on my Thinkpad L480. Touchpad and Trackpoint are not working after the kernel update to 4.18.1.arch1-1. Both were working fine with the previous version of the kernel (4.17) from the core repository.

I have tried adding the kernel parameters "i8042.noloop i8042.nomux i8042.nopnp i8042.reset" (suggested in libinput ArchWiki), but that did not fix the issue.

Both the Touchpad and Trackpoint are working fine with the LTS kernel (4.14.63-1-lts), without any additional kernel parameters.

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Edit: 24-Aug-2018

Including the outputs of the following commands, for the latest stable (core/linux 4.18.4.arch1-1) and LTS (core/linux-lts 4.14.66-1) kernels:

dmesg | grep -iC 3 "elan"
cat /proc/bus/input/devices |awk '/Elantech/' RS="\n\n"
grep "Using input driver" /var/log/Xorg.0.log

The stable kernel (4.18.4.arch1-1) does not create any Elantech devices in /proc/bus/input/devices.

--------------------
Edit 2: 24/Aug/2018

The xorg log files uploaded in the previous edit were named incorrectly. Apologies. I am unable delete them from the comment. The correct ones are the 0.7 KiB file for linux-lts-4.14.66-1 and 0.4 KiB file for linux-4.18.4.arch1-1.

I also have a Thinkpad L480 and can also confirm this issue.

This same issue on my Thinkpad L480

Possibly https://bugzilla.kernel.org/show_bug.cgi?id=199911

Having the same problem on my L580

I have experienced the same issue when using an openSUSE rolling release (Tumbleweed) live medium with the 4.18 series kernel, on Thinkpad L480. Hence, the issue may not be specific to Arch Linux.

Hello, I was experiencing this issue on my Asus FX504GM.
I used these patches:
https://bugzilla.kernel.org/attachment.cgi?id=277507&action=diff and https://bugzilla.kernel.org/attachment.cgi?id=277553&action=diff
From this thread:
https://bugzilla.kernel.org/show_bug.cgi?id=199911#c68
And the touchpad works for me, however it is still buggy. Occasionally it disconnects and the driver needs restarting and there are a few other issues.

I have the same issue on my Thinkpad L580. Touchpad and Trackpoint aren't working nor detected.

I'm experiencing the same problem on a new ThinkPad p52. I looked through the fix proposed by Tom Todd, it turned out it was included in 4.19-rc1. I compiled it, booted, but still the issue is there

kernel: psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
kernel: psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
kernel: psmouse serio1: elantech: Elan sample query result 00, 28, 96
kernel: psmouse serio1: elantech: Trying to set up SMBus access
kernel: elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
kernel: elan_i2c 0-0015: Linked as a consumer to regulator.0
kernel: elan_i2c 0-0015: failed to get resolution: -71
kernel: elan_i2c 0-0015: Dropping the link to regulator.0
kernel: elan_i2c: probe of 0-0015 failed with error -71

No only part of it was included. Lines 1016 to 1022 of the first patch are not in currently if I'm not mistaken, as they are more of a work around than an actual fix.

I have the same problem on a Thinkpad P52:

$ dmesg | grep -i elan
[ 3.176443] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 3.187446] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 3.197761] psmouse serio1: elantech: Elan sample query result 00, 28, 96
[ 3.209929] psmouse serio1: elantech: Trying to set up SMBus access
[ 3.216519] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
[ 3.237723] elan_i2c 0-0015: failed to get resolution: -71
[ 3.237731] elan_i2c: probe of 0-0015 failed with error -71
[ 4502.367914] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 4502.378665] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 4502.389503] psmouse serio1: elantech: Elan sample query result 00, 28, 96
[ 4502.399499] psmouse serio1: elantech: Trying to set up SMBus access
[ 4502.399935] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
[ 4502.418036] elan_i2c 0-0015: failed to get resolution: -71
[ 4502.418060] elan_i2c: probe of 0-0015 failed with error -71

@tom-todd
I added the workaround part into my 4.19-rc4 and it did not change the picture unfortunately...

I think I saw a note in the original thread that this workaround is needed only if the error message from the excluded code block is appearing in the syslog.

[deleted]

Dear all

I think I found at least temporary fix for the issue (the new notebook is not useless at least!) Hopefully somebody more experienced with input drivers will add a real fix for the issue.

When I instruct system to use 'elantech' as the protocol for serial device with the command:
sudo sh -c 'echo -n "elantech" > /sys/bus/serio/devices/serio1/protocol'

the system log shows that the device is detected correctly:
kernel: psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
kernel: psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
kernel: psmouse serio1: elantech: Elan sample query result 00, 28, 96
kernel: input: ETPS/2 Elantech TrackPoint as /devices/platform/i8042/serio1/input/input16
kernel: input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input15

Both touchpad and trackpoint are working fine now
tested on stock Arch Kernel 4.18.7-arch1-1-ARCH

I also have a L480 and had this Problem. I tried Alexey Vasilyev's comment and it fixed the Problem for 4.18.8-arch1-1-ARCH. Thanks.

The solution proposed by Alexey Vasilyev worked on my L480, when running the '4.18.9.arch1-1' kernel. Thanks.

I have noticed that 'cat /sys/bus/serio/devices/serio1/protocol' reports 'ETSMBus' before running the command and 'ETPS/2' after running it.

I have a Lenovo P52 with kernel 4.18, running only the command mentioned by dr-avas fixes the problem, ie:
sudo sh -c 'echo -n "elantech" > /sys/bus/serio/devices/serio1/protocol'

Also having this issue on a L480.

On kernel 4.19.1 its still doesn't work, of course sudo sh -c 'echo -n "elantech" > /sys/bus/serio/devices/serio1/protocol' helps.
Actually 4.14 LTS works fine, do someone know something about 4.20?

According to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803600 the bug also exists in 4.20

Booting with kernel parameter "psmouse.elantech_smbus=0" seems to fix it as well.

Confirming, same issue on ThinkPad P72. Likewise, dr-avas's temporary fix works, however does not persist across boots. Using thigg's suggested kernel parameter works.

Kernel 4.19.8 includes elan_i2c patches adding support for some elan touchpads on Lenovo laptops, but does not seem to support the touchpad on L480 yet.

Same issue, also remedied by dr-avas' fix but I have to run it every time on startup.

Thinkpad P52
Linux 4.19.8-arch1-1-ARCH #1 SMP PREEMPT Sat Dec 8 13:49:11 UTC 2018 x86_64 GNU/Linux

Same issue on Lenovo P52

uname -a
Linux dosbox 4.19.12-arch1-1-ARCH #1 SMP PREEMPT Fri Dec 21 13:56:54 UTC 2018 x86_64 GNU/Linux

dmesg | grep elan
[ 4.653049] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 4.663477] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 4.673817] psmouse serio1: elantech: Elan sample query result 00, 28, 96
[ 4.683755] psmouse serio1: elantech: Trying to set up SMBus access
[ 4.688794] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
[ 4.688806] elan_i2c 0-0015: Linked as a consumer to regulator.0
[ 4.719058] elan_i2c 0-0015: failed to get resolution: -71
[ 4.719070] elan_i2c 0-0015: Dropping the link to regulator.0
[ 4.719076] elan_i2c: probe of 0-0015 failed with error -71

workaround from dr-avas works.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d21ff5d7f8c397261e095393a1a8e199934720bc references this bug report

since kernel 4.20.0 it works out of the box again. without any workaround.

uname -a
Linux dosbox 4.20.0-arch1-1-ARCH #1 SMP PREEMPT Mon Dec 24 03:00:40 UTC 2018 x86_64 GNU/Linux
dmesg | grep elan
[ 3.627199] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 3.641126] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 3.652137] psmouse serio1: elantech: Elan sample query result 00, 28, 96

4.20.0 kernel may have fixed the issue on P52/P72, but not on L480. I can confirm that the issue persists on L480, even after the kernel update.

@rrdinu have you emailed linux-input@vger.kernel.org with a CC to benjamin.tissoires@redhat.com and dmitry.torokhov@gmail.com with that information?

It doesnt work on Lenovo L480 with 4.20.0-arch1-1-ARCH

@loqs, I have not emailed the above-mentioned. I assumed that the issue may have been fixed on P52(or P72) based on sucre's post and your previous post about the commit. On my L480, the issue persists even after the update to 4.20.0 kernel.

It is not working on an Acer Aspire E 16 E-5-774G-57NH, running 4.20.3-arch1-1-ARCH. I will be emailing linux-input@vger.kernel.org.

It is detected:
dmesg | grep elan
[ 10.142640] elan_i2c i2c-ELAN0501:00: i2c-ELAN0501:00 supply vcc not found, using dummy regulator
[ 10.142674] elan_i2c i2c-ELAN0501:00: Linked as a consumer to regulator.0
[ 10.262529] elan_i2c i2c-ELAN0501:00: Elan Touchpad: Module ID: 0x000a, Firmware: 0x0002, Sample: 0x0002, IAP: 0x000d

Output of cat /sys/bus/serio/devices/serio0/firmware_id :
PNP: PNP0303

I have the same issue with an Acer Aspire E5-575-50Q4. Although works after several reboots.

uname -a
Linux acer-laptop 4.20.6-arch1-1-ARCH #1 SMP PREEMPT Thu Jan 31 08:22:01 UTC 2019 x86_64 GNU/Linux

journalctl --since today | grep elan
Feb 02 09:03:41 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: i2c-ELAN0501:00 supply vcc not found, using dummy regulator
Feb 02 09:03:41 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: Linked as a consumer to regulator.0
Feb 02 09:03:41 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: Elan Touchpad: Module ID: 0x000a, Firmware: 0x0002, Sample: 0x0002, IAP: 0x000d
Feb 02 09:04:54 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: i2c-ELAN0501:00 supply vcc not found, using dummy regulator
Feb 02 09:04:54 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: Linked as a consumer to regulator.0
Feb 02 09:04:54 acer-laptop kernel: elan_i2c i2c-ELAN0501:00: Elan Touchpad: Module ID: 0x000a, Firmware: 0x0002, Sample: 0x0002, IAP: 0x000d

@jdorel what is the output of `cat /sys/bus/serio/devices/serio1/firmware_id` ?

I did not have a serio1 device, but a serio0 device:

cat /sys/bus/serio/devices/serio0/firmware_id
PNP: PNP0303

Unfortunately that device identifier is probably too generic to blacklist
Please try the work around from https://bugs.archlinux.org/task/59714#comment174924

@loqs 'cat /sys/bus/serio/devices/serio0/firmware_id' returns 'PNP: LEN0071 PNP0303' on my Thinkpad L480. I am booting with kernel parameter 'psmouse.elantech_smbus=0' on kernel 5.0.7.

Experiencing this on Lenovo Ideapad, kernel 5.6.4-arch1-1

λ rg -i 'Touchpad' ~/.local/share/xorg/Xorg.0.log
263:[ 7.877] (II) config/udev: Adding input device ELAN0662:00 04F3:30BC Touchpad (/dev/input/event7)
264:[ 7.877] (**) ELAN0662:00 04F3:30BC Touchpad: Applying InputClass "libinput touchpad catchall"
265:[ 7.877] (II) Using input driver 'libinput' for 'ELAN0662:00 04F3:30BC Touchpad'
267:[ 7.878] (**) ELAN0662:00 04F3:30BC Touchpad: always reports core events
270:[ 7.879] (II) event7 - ELAN0662:00 04F3:30BC Touchpad: is tagged by udev as: Touchpad
271:[ 7.879] (II) event7 - ELAN0662:00 04F3:30BC Touchpad: device is a touchpad
272:[ 7.880] (II) event7 - ELAN0662:00 04F3:30BC Touchpad: device removed
274:[ 7.880] (II) XINPUT: Adding extended input device "ELAN0662:00 04F3:30BC Touchpad" (type: TOUCHPAD, id 11)
276:[ 7.881] (**) ELAN0662:00 04F3:30BC Touchpad: (accel) selected scheme none/0
277:[ 7.881] (**) ELAN0662:00 04F3:30BC Touchpad: (accel) acceleration factor: 2.000
278:[ 7.881] (**) ELAN0662:00 04F3:30BC Touchpad: (accel) acceleration threshold: 4
279:[ 7.881] (II) event7 - ELAN0662:00 04F3:30BC Touchpad: is tagged by udev as: Touchpad
280:[ 7.882] (II) event7 - ELAN0662:00 04F3:30BC Touchpad: device is a touchpad
281:[ 7.883] (II) config/udev: Adding input device ELAN0662:00 04F3:30BC Touchpad (/dev/input/mouse1)


λ journalctl -k | grep -i elan
Apr 19 11:00:25 moto kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=28d3c19f-5078-4a70-a03f-6bb0ce9bfd7e rw loglevel=3 quiet psmouse.elantech_smbus=0
Apr 19 11:00:25 moto kernel: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=28d3c19f-5078-4a70-a03f-6bb0ce9bfd7e rw loglevel=3 quiet psmouse.elantech_smbus=0
Apr 19 11:00:25 moto kernel: i2c_hid i2c-ELAN0662:00: i2c-ELAN0662:00 supply vdd not found, using dummy regulator
Apr 19 11:00:25 moto kernel: i2c_hid i2c-ELAN0662:00: i2c-ELAN0662:00 supply vddl not found, using dummy regulator
Apr 19 11:00:26 moto kernel: input: ELAN0662:00 04F3:30BC Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-ELAN0662:00/0018:04F3:30BC.0001/input/input6
Apr 19 11:00:26 moto kernel: input: ELAN0662:00 04F3:30BC Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-ELAN0662:00/0018:04F3:30BC.0001/input/input8
Apr 19 11:00:26 moto kernel: hid-generic 0018:04F3:30BC.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN0662:00 04F3:30BC] on i2c-ELAN0662:00
Apr 19 11:00:26 moto kernel: input: ELAN0662:00 04F3:30BC Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-ELAN0662:00/0018:04F3:30BC.0001/input/input10
Apr 19 11:00:26 moto kernel: input: ELAN0662:00 04F3:30BC Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-ELAN0662:00/0018:04F3:30BC.0001/input/input12
Apr 19 11:00:26 moto kernel: hid-multitouch 0018:04F3:30BC.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN0662:00 04F3:30BC] on i2c-ELAN0662:00

Not Arch. However, The above comment from thigg was the most helpful in my resolving an issue (on Mint 20 not Arch).
""Booting with kernel parameter "psmouse.elantech_smbus=0" seems to fix it as well."

This thread seemed most relevant in context to specifically the thinkpad trackpad issue.

I had been all around the web looking for a solution and what finally worked was my blacklisting i2c_i801 from modprobe. This is the SMBus driver.

I tried thigg's solution on my distribution and it did not work but was the clue that led me to disable that module. I wonder if there isn't some other kernel parameter that would be similar outside arch.

For the curious here are other relevant details from my issue:

cat /etc/debian_version
bullseye/sid

uname -a
Linux **** 5.4.0-47-generic #51-Ubuntu SMP Fri Sep 4 19:50:52 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

cat /etc/default/grub


xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ PixArt USB Optical Mouse id=9 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech TrackPoint id=11 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=12 [slave pointer (2)]


cat /proc/bus/input/devices |awk '/Elantech/' RS="\n\n"
I: Bus=0011 Vendor=0002 Product=000e Version=0000


○ → dmesg | grep -i elan
[ 1.679338] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 1.690591] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 1.701369] psmouse serio1: elantech: Elan sample query result 00, 28, 96
[ 1.723050] psmouse serio1: elantech: Trying to set up SMBus access
[ 87.241837] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
[ 87.253396] elan_i2c 0-0015: Elan Touchpad: Module ID: 0x0028, Firmware: 0x0074, Sample: 0x0000, IAP: 0x0000
[ 87.254125] input: Elan Touchpad as /devices/pci0000:00/0000:00:1f.4/i2c-0/0-0015/input/input8
[ 87.254205] input: Elan TrackPoint as /devices/pci0000:00/0000:00:1f.4/i2c-0/0-0015/input/input9
[ 631.155545] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5f2001)
[ 631.165714] psmouse serio1: elantech: Synaptics capabilities query result 0x90, 0x18, 0x0e.
[ 631.175527] psmouse serio1: elantech: Elan sample query result 00, 28, 96
[ 631.195122] psmouse serio1: elantech: Trying to set up SMBus access
[ 631.195134] psmouse serio1: elantech: SMbus companion is not ready yet
[ 631.216730] input: ETPS/2 Elantech TrackPoint as /devices/platform/i8042/serio1/input/input20
[ 631.228903] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input19


GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.elan_smbus=0"

→ cat /etc/modprobe.d/blacklist
#Causes Trackpad to fail
blacklist i2c_i801

apt list --installed | grep xorg-input

xserver-xorg-input-evdev/focal,now 1:2.10.6-1 amd64 [installed]
xserver-xorg-input-libinput/focal,now 0.29.0-1 amd64 [installed]
xserver-xorg-input-mouse/focal,now 1:1.9.3-1build1 amd64 [installed]

I cannot reproduce the issue. Is it still valid for you?

The issue seems to be fixed. I tried in the following kernel versions and touchpad works without issues now:

kernel 5.11.6-arch1-1 | linux
kernel 5.10.23-1 | linux-lts
kernel 5.16.11.arch1-1 | linux
kernel 5.15.25-1 | linux-lts

Thanks for all your support and discussion. I think this may be closed.