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 v4.18 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/v4.18-rc3 ** 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/1779670 Title: kernel report error on nouveau driver for Acer Aspiere A715-71G-54LH, causing hanged machine when shutdown Status in linux package in Ubuntu: Incomplete Bug description: Hello everybody. this is the first time i report a issue here. Sorry my broken english :) Recently i bought a a Acer Aspire A715-71G-54LH with NVIDIA graphic card, by default after installation it runs nouveau driver. The graphics looks fine but suddently strange things start happeing: + computer hanged at startup (some times, sometimes not) + shutdown hanged after clicking the "logout" button (all the times) + shutdown hanged after calling "shutdown -h now" command (all the times) All this issues happened when nouveau driver was active, after changing to a nvidia propietary driver then it starts working fine again with no issues at all. Resume: + (NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] (rev a1)) + Linux version 4.15.0-23-generic (buildd@lgw01-amd64-055) + Ubuntu 4.15.0-23.25-generic 4.15.18 By running "journalctl -b -1" it shows the error (please see attachments), this log happened when nouveau was active. The nvidia-driver produces no error at all) Thnku very much. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779670/+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
