It's the gnome-shell crashes. [86941.402557] gnome-shell[77896]: segfault at 140 ip 00007e53082487f6 sp 00007e52b37eafe0 error 4 in libc.so.6[7e5308228000+188000] likely on CPU 4 (core 8, socket 0) [86941.402574] Code: 84 ed 74 60 e8 2b fd fd ff 49 8b 1c 24 49 89 c7 48 85 db 75 15 eb 36 0f 1f 44 00 00 49 8b 5c 24 08 49 83 c4 08 48 85 db 74 23 <44> 3a 2b 75 ed 4c 89 fa 48 89 de 4c 89 f7 e8 f7 fd fd ff 85 c0 75
Could you add "drm.debug=0x1e" to /etc/default/grub change the below line GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="log_buf_len=16M drm.debug=0x1e" Then run sudo update-grub and reboot to capture the dmesg log again after unplug the HDMI. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2068904 Title: Screen restarts and logs out when disconnecting HDMI cable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-meta/+bug/2068904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
