Public bug reported: When using the Wacom pen that was included for the touch screen on my Lenovo Thinkpad P15 Gen1 laptop, the kernel hangs. This worked a few weeks ago. Looking at journalctl after rebooting shows the following two lines:
mar 22 13:26:33 minerva kernel: wacom 0003:056A:51E9.0001: wacom_wac_queue_insert: kfifo has filled, starting to drop events mar 22 13:26:33 minerva kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000 This appears to be the following bug, which has already been solved upstream and presumably needs to be backported to Ubuntu 20.04: https://github.com/linuxwacom/input-wacom/issues/230 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.8.0-45-generic 5.8.0-45.51~20.04.1+1 ProcVersionSignature: Ubuntu 5.8.0-45.51~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-45-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Mar 22 14:56:52 2021 InstallationDate: Installed on 2021-01-18 (62 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) SourcePackage: linux-signed-hwe-5.8 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: linux-signed-hwe-5.8 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1920772 Title: Kernel NULL pointer dereference when using Wacom pen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1920772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
