Same error on Ubuntu 18.04 4.15.0-39-generic I can't use virtualization because the system reboots when using it. Also I have short time random black screen and random reboots.
final part of dmesg: [ 9.163753] e1000e 0000:00:1f.6 eno1: 10/100 speed: disabling TSO [ 9.163802] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready [ 12.577491] PKCS#7 signature not signed with a trusted key [ 12.577523] vboxdrv: loading out-of-tree module taints kernel. [ 12.578400] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel [ 12.602825] vboxdrv: Found 6 processor cores [ 12.624573] vboxdrv: TSC mode is Invariant, tentative frequency 3095999268 Hz [ 12.624575] vboxdrv: Successfully loaded version 5.2.10_Ubuntu (interface 0x00290001) [ 12.637952] PKCS#7 signature not signed with a trusted key [ 12.638961] VBoxNetFlt: Successfully started. [ 12.651862] PKCS#7 signature not signed with a trusted key [ 12.652723] VBoxNetAdp: Successfully started. [ 12.666487] PKCS#7 signature not signed with a trusted key [ 12.667240] VBoxPciLinuxInit [ 12.672532] vboxpci: IOMMU not found (not registered) [ 31.920956] rfkill: input handler disabled -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800196 Title: spice-vdagent[1345]: Cannot access vdagent virtio channel /dev/virtio- ports/com.redhat.spice.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/spice-vdagent/+bug/1800196/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
