Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.17 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc4 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1770581 Title: lspci will hang and can't be killed on ThinkPad P52 Status in linux package in Ubuntu: Incomplete Bug description: Installed the 18.04 GM version, and upgraded latest updates. The kernel is 4.15.0-20. And there are nvidia card. It used noveau as default. After I installed the nvidia-384 packages, this issue was gone. So I doubt it's bug for noveau. 00:00.0 Host bridge [0600]: Intel Corporation Device [8086:3ec4] (rev 07) 00:01.0 PCI bridge [0604]: Intel Corporation Sky Lake PCIe Controller (x16) [8086:1901] (rev 07) 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:3e9b] 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1cba] (rev a1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1770581/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

