I think the issues are caused by mixing linux-signed with -image with the same ABI version, so try uninstalling linux-signed-* and see if you still get these
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1603862 Title: Tainted kernel: lspci, udevadm crashed on 4.4 kernel Status in linux package in Ubuntu: Triaged Bug description: while verifying bug #1599109 , I'm not able to use certain commands: lspci, udevadm steps to reproduce: 1. fresh isntall 2. install testing kernel A further testing on the tainted kernel issues: reinstall with xenial(14.04.0): after suspend and resume similar tainted message will show up while using udevadm, lspci, hence both program hung/crashed like in tested kernel. reinstall with trusty(14.04.3 with 3.19 kernel) there is no tainted kernel however. But after upgrade to linux-generic-lts-xenial(4.4 kernel) system became very unstable on this system, failed at suspend. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1603862/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp