Kernel 6.15 - no hdmi output after grub boot

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1

After updating to Linux fedora 6.15.3-200.fc42.x86_64, my screen blanks to ‘no hdmi input’ past the grub2 screen, device is an intel nuc 14 pro with core i9 (gpu being integrated intel arc)

hwinfo: https://www.asus.com/us/displays-desktops/nucs/nuc-mini-pcs/asus-nuc-14-pro-plus/techspec/

the journalctl -b is very long and not sure what i’m supposed to look for there? looking for errors shows

Jun 25 14:16:28 fedora kernel: RAS: Correctable Errors collector initialized.
Jun 25 14:16:39 fedora gnome-session[1692]: gnome-session-binary[1692]: WARNING: Could not check if unit gnome-session-wayland@gnome-login.target is active: Error calling StartServiceByName for org.freedesktop.systemd1: Process org.freedesktop.systemd1 exited with status 1
Jun 25 14:16:39 fedora gnome-session-binary[1692]: WARNING: Could not check if unit gnome-session-wayland@gnome-login.target is active: Error calling StartServiceByName for org.freedesktop.systemd1: Process org.freedesktop.systemd1 exited with status 1
Jun 25 14:16:40 fedora gsd-sharing[1816]: Failed to handle service change: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
Jun 25 14:16:40 fedora gsd-sharing[1816]: Failed to handle service change: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
Jun 25 14:16:40 fedora gnome-shell[1704]: Error looking up permission: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for geolocation
Jun 25 14:16:40 fedora org.gnome.Shell.desktop[2030]: Errors from xkbcomp are not fatal to the X server
Jun 25 14:16:40 fedora org.gnome.Shell.desktop[2087]: Errors from xkbcomp are not fatal to the X server
1 Like
2

I am experiencing the same issue I think.

Also an ASUS NUC 14. I have the Intel Core Ultra 5 125H and am using the integrated ARC GPU with a 4K monitor on one of the HDMI ports.

The system does actually boot. I can ssh into it, just no graphics.

The 6.14.11-300 kernel works. The 6.15.3 and 6.15.4 kernels do not work for HDMI.

Connecting the monitor via one of the Thunderbolt 4 ports (so Display Port) works for 6.15.4. Haven’t tried the older kernels with Thunderbolt.

The only error that I can see that maybe related is

i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun

This error is not present when connected via Thunderbolt, only HDMI.

3

I also have no output on arc a580 hdmi.

4

Please post relevant journalctl messages to help establish patterns that could lead to an early solution. If you are not familiar with command-line tools and journalctl, see Linux Handbook: journalctl Command.

5

Here’s the log lines containing ‘error’:

Jul 05 17:15:56 fedora kernel: RAS: Correctable Errors collector initialized.
Jul 05 17:15:58 fedora kernel: i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
Jul 05 17:15:59 fedora kernel: iwlwifi 0000:00:14.3: Not valid error log pointer 0x0024B5C0 for RT uCode
Jul 05 17:16:00 fedora mcelog[1223]: mcelog: Family 6 Model 170 CPU: only decoding architectural errors
Jul 05 17:16:01 fedora kernel: iwlwifi 0000:00:14.3: Not valid error log pointer 0x0024B5C0 for RT uCode
Jul 05 17:16:02 fedora kernel: iwlwifi 0000:00:14.3: Not valid error log pointer 0x0024B5C0 for RT uCode
Jul 05 17:16:08 fedora gnome-session[1730]: gnome-session-binary[1730]: WARNING: Could not check if unit gnome-session-wayland@gnome-login.target is active: Error calling StartServiceByName for org.freedesktop.systemd1: Process org.freedesktop.systemd1 exited with status 1
Jul 05 17:16:08 fedora gnome-session-binary[1730]: WARNING: Could not check if unit gnome-session-wayland@gnome-login.target is active: Error calling StartServiceByName for org.freedesktop.systemd1: Process org.freedesktop.systemd1 exited with status 1
Jul 05 17:16:08 fedora gnome-shell[1742]: Error looking up permission: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for geolocation
Jul 05 17:16:08 fedora gsd-sharing[1862]: Failed to handle service change: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
Jul 05 17:16:08 fedora gsd-sharing[1862]: Failed to handle service change: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
Jul 05 17:16:09 fedora org.gnome.Shell.desktop[2311]: Errors from xkbcomp are not fatal to the X server
Jul 05 17:16:09 fedora systemd-node_exp[2372]: time=2025-07-05T21:16:09.303Z level=ERROR source=diskstats_linux.go:264 msg="Failed to open directory, disabling udev device properties" collector=diskstats path=/run/udev/data
Jul 05 17:16:09 fedora org.gnome.Shell.desktop[2518]: Errors from xkbcomp are not fatal to the X server
Jul 05 17:16:18 fedora systemd-node_exp[2372]: time=2025-07-05T21:16:18.685Z level=ERROR source=collector.go:168 msg="collector failed" name=thermal_zone duration_seconds=0.008322625 err="invalid argument"
Jul 05 17:16:28 fedora systemd-node_exp[2372]: time=2025-07-05T21:16:28.671Z level=ERROR source=collector.go:168 msg="collector failed" name=thermal_zone duration_seconds=0.001319752 err="invalid argument"

full log: