I had been experiencing the freeze/lockup on 18.10. My main machine is a Lenovo ThinkPad laptop with switchable graphics (Intel & Nvidia), and Intel Xeon E-2176M CPU.
Originally, my guess was that the lockup was graphics related. Back in March 2019, I applied the xorg.conf edits recommended in comment #42. This seemed to eliminate the hard freezes, at least for a while. However, not long ago, perhaps around mid-June, the freezes returned. Also, I encountered the freezes not only with Intel graphics engaged, but when the system was using the discrete Nvidia chip too. I tried to correlate the freezing with use of Chromium, but it occurred using Firefox too, and in fact happened with no browser running. As a last ditch attempt to avoid re-installation, I upgraded the system from 18.10 ~> 19.04, hopeful that kernel version 5 would make the situation better. In my case, this has been so. //Since upgrading to 19.04, and running various increments of kernel 5 (5.0.0-[17,19,20]-generic,) I haven't encountered any freezes// 5 days now and counting (FWIW) >From reading prior posts, seems some folks are already using kernel 5, and their freeze problem remains. Nevertheless, for my case, with a laptop with newer hardware, upgrading Ubuntu and kernel version was helpful. I had accumulated a collection of crash dumps from my old Ubuntu version (18.10 and kernel 4.18), which I will attach to the ticket. Hopefully they might be of use for investigation. -- 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/1798961 Title: Random unrecoverable freezes on Ubuntu 18.10 Status in Linux: New Status in linux package in Ubuntu: Confirmed Status in xserver-xorg-video-intel package in Ubuntu: Invalid Status in linux source package in Bionic: Triaged Status in xserver-xorg-video-intel source package in Bionic: Invalid Status in linux source package in Cosmic: Triaged Status in xserver-xorg-video-intel source package in Cosmic: Invalid Status in linux source package in Disco: Triaged Status in xserver-xorg-video-intel source package in Disco: Invalid Bug description: First thing I notice is that the mouse cursor freezes as I'm using it, then I hit the CAPS LOCK key and the LED indicator doesn't respond. Then I try the "REISUB" command, but it doesn't do anything either. Only a hard reset works, pressing down the power button for a few seconds. How to reproduce? I couldn't figure out a consistent method. It is still random to me. Version: Ubuntu 4.18.0-10.11-generic 4.18.12 System information attached. Also happens under Arch Linux and Fedora. I've talked to another user on IRC who seems to be having the same freezes. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-10-generic 4.18.0-10.11 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: dsilva 1213 F.... pulseaudio /dev/snd/controlC0: dsilva 1213 F.... pulseaudio CurrentDesktop: XFCE Date: Sat Oct 20 09:54:50 2018 InstallationDate: Installed on 2018-10-20 (0 days ago) InstallationMedia: Xubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2) MachineType: Dell Inc. Inspiron 5458 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-10-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.18.0-10-generic N/A linux-backports-modules-4.18.0-10-generic N/A linux-firmware 1.175 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/02/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 09WGNT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA15:bd02/02/2018:svnDellInc.:pnInspiron5458:pvr01:rvnDellInc.:rn09WGNT:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Inspiron 5458 dmi.product.sku: Inspiron 5458 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1798961/+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
