[Bug 1802135] Re: broken touchpad after i2c-i801 blacklist change

[chad billman]

I added bionic-proposed to a broken machine and verified the installed
version is 24-1ubuntu3.2 and that the blacklist.conf file had the proper
blacklist entry. However I noticed that apt did not run update-
initramfs.

After a reboot the touchpad was still not working. After manually
running update-initramfs and rebooting the touchpad worked.

Is that the expected behaviour in this case?

I re-installed kmod=24-1ubuntu3 and it didn't appear to update the
initramfs either.

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Title:
  broken touchpad after i2c-i801 blacklist change

Status in kmod package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete
Status in kmod source package in Xenial:
  Fix Committed
Status in linux source package in Xenial:
  Incomplete
Status in kmod source package in Bionic:
  Fix Committed
Status in linux source package in Bionic:
  Incomplete
Status in kmod source package in Cosmic:
  Fix Committed
Status in linux source package in Cosmic:
  Incomplete

Bug description:
  After upgrading to kmod (24-1ubuntu3.1) the trackpads stop working on
  Lenovo 11e 2nd gen machines.

  We have a fleet of approximetly 1000 of them in production running
  ubuntu 18.04. Prior to this update the trackpads worked out of box in
  18.04.

  We are currently working around the issue by deploying our own
  blacklist files.

  Here is a link to the SRU justification: https://bugs.launchpad.net
  /hwe-next/+bug/1786574

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