This bug was fixed in the package kmod - 25-1ubuntu3
---------------
kmod (25-1ubuntu3) disco; urgency=medium
* Drop i2c_i801 from the blacklist again, things work fine with
current kernels. (LP: #1786574)
-- Timo Aaltonen <tjaal...@debian.org> Thu, 04 Apr 2019 11:30:14 +0300
** Changed in: kmod (Ubuntu)
Status: In Progress => Fix Released
--
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https://bugs.launchpad.net/bugs/1786574
Title:
remove i2c-i801 from blacklist
Status in HWE Next:
In Progress
Status in OEM Priority Project:
New
Status in kmod package in Ubuntu:
Fix Released
Status in kmod source package in Xenial:
In Progress
Status in kmod source package in Bionic:
In Progress
Status in kmod source package in Cosmic:
In Progress
Bug description:
SRU justification
============
[Impact]
Many modern notebooks need i2c-i801 kernel module to function, but it is
blacklisted by /etc/modprobe/blacklist.conf, which gives a very poor user
experience.
[Test case]
1. Install Ubuntu
2. Check touchpad works or not
3. Install the fixed kmod package
4. Confirm touchpad works
[Regression Potential]
i2c-i801 was blacklisted due to bug 16602. The user complains an HP Compaq
nc6000 notebook cannot suspend without blacklisting i2c-i801. While this is a
way to workaround the suspend issue, the proper fix should be in linux kernel.
Since nc6000 was a machine sold in 2004, it is too difficult to find someone to
verify if it will regress due to this SRU. The rationale to blacklist it is:
https://bugs.launchpad.net/ubuntu/+source/hotplug/+bug/16602/comments/5,
however it is no longer valid nowadays on modern computers.
Besides, there look like to be a quirk in linux kernel that fixes it:
https://github.com/torvalds/linux/blame/master/drivers/pci/quirks.c#L1434
[Other Info]
rationale of i2c_i801 driver blacklist:
https://answers.launchpad.net/ubuntu/+source/kmod/+question/269329
-----------------------------------------------------------------------------------------------
Original bug report:
We have a Lenovo Thinkpad machine that requires i2c-i801 kernel module
to work, but it is listed in /etc/modprobe/blacklist.conf in Ubuntu.
To use the touchpad, users have to remove the i2c-i801 line manually.
i2c-i801 in blacklist.conf is a very old workaround to fix HP compaq nc6000
(Bug #16602), this module should be removed from blacklist.
There is also another bug (Bug #1475945) that needs this module for
Acer trackpad to work.
To manage notifications about this bug go to:
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