** Description changed: - After upgrading to kmod (24-1ubuntu3.1) the trackpads stop working on - Lenovo 11e 2nd gen machines. + SRU: + ==== + + [Impact] + ThinkPad 11e 2nd/3rd touchpad not working when load i2c-i801. + PNP LEN0049 will use smbus by default in kernel, but i2c bus is in + runtime suspend mode in old touchpad fw. + Then touchpad will not work. + LEN2040 on 11e 3rd can reproduce this issue by passing + psmouse.synaptics_intertouch=1 + + These 2 pnp device should be the same one Synaptics s3203_ver5. + + [Fix] + i2c-i801 should auto suspend when not used, no need runtime pm. + + [Test Case] + Tested on Thinkpad 11e 3rd. + Touchpad works fine. + + [Regression Potential] + Low, upstream fix cherry-picked. + + 4.18 kernel patch, no need for cosmic. + + + Original bug report: + ================= + 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
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802135 Title: broken touchpad after i2c-i801 blacklist change To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kmod/+bug/1802135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
