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  • Posts: 1
  • Registered: ‎05-24-2021
  • Location: Germany
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MSFT/Mylar Touchpad on Lenovo Ideapad flex 5 14ARE05 Ubuntu 21.04

2021-06-19, 7:54 AM

The touchpad on my Laptop has never worked (since 20.04), however the issue has persisted throughout several kernel updates, now 5.11. According to the spec sheet, the touchpad is supposed to be a "Buttonless Mylar® touchpad" but in the error messages it is called MSFT0001:00. The note app Xournalpp can detect it although the rest of the system can't and calles it "MSFT0001:00 04F3:3140"

Many sources claim the issue has been fixed, however since it does not work in ubuntu, manjaro, fedora and openSUSE (live boots), I do not really know what to do here. Since it didn't work in the live boots I think it should not be any false configuration on my part.

It is not visible in libinput, xinput, lshw, lsusb and lspci. The touchpad gets claimed by the i2c_hid diver and I can't seem to be able to bind it elsewhere.

Has anyone got any idea why this is happening?

I also have a bug report: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1912880

The outputs

i2c_hid i2c-MSFT0001:00: supply vddl not found, using dummy regulator

i2c_hid i2c-MSFT0001:00: hid_descr_cmd failed

do not appear in kernel 5.13 rc6


The touchpad also does not work in manjaro, fedora and openSUSE.

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