Though there's at least one other case where kernel failures happen just before Xorg failures:
Jul 24 01:09:40 u-XPS-13-9380 kernel: [ 1257.973610] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.196769] thunderbolt 0000:05:00.0: control channel starting... Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.196772] thunderbolt 0000:05:00.0: starting TX ring 0 Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.196780] thunderbolt 0000:05:00.0: enabling interrupt at register 0x38200 bit 0 (0x0 -> 0x1) Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.196782] thunderbolt 0000:05:00.0: starting RX ring 0 Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.196790] thunderbolt 0000:05:00.0: enabling interrupt at register 0x38200 bit 12 (0x1 -> 0x1001) Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.197236] usb usb3: root hub lost power or was reset Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.197238] usb usb4: root hub lost power or was reset Jul 24 01:09:41 u-XPS-13-9380 kernel: [ 1258.530275] [drm:intel_dp_check_link_status [i915]] *ERROR* Failed to get link status Jul 24 01:09:41 u-XPS-13-9380 /usr/lib/gdm3/gdm-x-session[2217]: (II) modeset(0): Allocate new frame buffer 5760x2160 stride Jul 24 01:09:43 u-XPS-13-9380 wpa_supplicant[838]: wlp2s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=-97 txrate=6000 Jul 24 01:09:43 u-XPS-13-9380 kernel: [ 1261.069294] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training Jul 24 01:09:44 u-XPS-13-9380 kernel: [ 1261.566585] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. Jul 24 01:09:44 u-XPS-13-9380 org.gnome.Shell.desktop[2345]: Window manager warning: Configuring CRTC 64 with mode 186 (1920 x 1080 @ 60.000000) at position 3840, 0 and transform 0 failed Jul 24 01:09:44 u-XPS-13-9380 gnome-shell[2345]: g_array_unref: assertion 'array' failed Jul 24 01:09:44 u-XPS-13-9380 gnome-shell[2345]: message repeated 2 times: [ g_array_unref: assertion 'array' failed] Jul 24 01:09:44 u-XPS-13-9380 /usr/lib/gdm3/gdm-x-session[2217]: (WW) modeset(0): hotplug event: connector 68's link-state is BAD, tried resetting the current mode. You may be leftwith a black screen if this fails... ** Changed in: xorg-server (Ubuntu) Status: Incomplete => New ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1837683 Title: Screen stops updating after about 8 hours - (EE) modeset(0): present flip failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1837683/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp