Michal.

Sometimes when reboot device goes to emergency mode and you can not connect to it remotelly. I read on internet, may be here, that make this [Firmware Bug]. I downgrade Kernel to "Igor" recommended 5.7.15 and there the [Firmware Bug] missing. I tested new and newest Kernel via armbian-config but the [Firmware Bug] is present everywhere. Kernel 5.7.15 seems good without this bug but i have no sounds on Audio out or via HDMI. --- journalctl -xb [Firmware Bug]: Kernel image misaligned at boot, please fix your bootloader!

UPDATE: YES, the PROBLEM present, if ENABLES RDP. full-upgrade the old Armbian 21.05.1 Focal with Linux 5.10.34-meson64 for Odroid N2+ to latest Armbian 21.05.4 Focal with Linux 5.10.43-meson64 and ALL OK. Any solution??? Here is armbianmonitor file: http://ix.io/3qxh --- On the old Armbian 21.05.1 Focal with Linux 5.10.34-meson64 for Odroid N2+ the HDMI NO SIGNAL BUG is also present too, WITHOUT SYSTEM UPGRADES! What i installed when the error occurs: via armbian-config: enable RDP for "multiple" connection from Windows + RDP fix for multiple sessions - if connection not work !!! sudo nano /etc/xrdp/startwm.sh Add to very top: # Allow multiple sessions unset DBUS_SESSION_BUS_ADDRESS unset XDG_RUNTIME_DIR sudo systemctl restart xrdp I think, that the error occur when enable and confiruge RDP. But I'm not sure, because I've made other adjustments, than the display communicated NO HDMI SIGNAL.

UPDATE: Installed latest Armbian 21.05.4 Buster with Linux 5.10.43-meson64 on Odroid N2+ and via armbian-config Desktop Fxce + full-upgrade. All ok and HDMI NO SIGNAL BUG missing. Seems the Buster has older SW but is STABLES. --- So i get to new clean system and install old Armbian 21.05.1 Focal with Linux 5.10.34-meson64 for Odroid N2+. Here the HDMI NO SIGNAL BUG missing - no problem with missing HDMI signal after login to desktop. I upgrade system: apt update apt upgrade Now have Armbian 21.05.4 Focal with Linux 5.10.43-meson64. The HDMI NO SIGNAL BUG present. F_ck !!! BE CAREFUL WHEN YOU USE THIS ARMBIAN IMAGE (ON ODROID N2) AND GO TO UPGRADE !!! What upgrades: alsa-utils armbian-bsp-cli-odroidn2 armbian-config armbian-firmware armbian-focal-desktop-xfce armbian-zsh bluez bluez-obexd devhelp-common evolution-data-server evolution-data-server-common firefox gir1.2-gst-plugins-base-1.0 gir1.2-javascriptcoregtk-4.0 gir1.2-mutter-6 gir1.2-polkit-1.0 gir1.2-webkit2-4.0 gnome-shell gnome-shell-common gstreamer1.0-plugins-base hostapd initramfs-tools initramfs-tools-bin initramfs-tools-core isc-dhcp-client libasound2 libasound2-data libatopology2 libbluetooth3 libcamel-1.2-62 libdevhelp-3-6 libebackend-1.2-10 libebook-1.2-20 libebook-contacts-1.2-3 libecal-2.0-1 libedata-book-1.2-26 libedata-cal-2.0-1 libedataserver-1.2-24 libedataserverui-1.2-2 libexiv2-27 libflatpak0 libgnome-autoar-0-0 libgoa-1.0-0b libgoa-1.0-common libgstreamer-gl1.0-0 libgstreamer-plugins-base1.0-0 libhogweed5 libjavascriptcoregtk-4.0-18 liblightdm-gobject-1-0 liblz4-1 libmutter-6-0 libmysqlclient21 libnettle7 libnss-myhostname libpam-modules libpam-modules-bin libpam-runtime libpam-systemd libpam0g libpolkit-agent-1-0 libpolkit-gobject-1-0 libprocps8 libpython3.8 libpython3.8-minimal libpython3.8-stdlib librsvg2-2 librsvg2-common libsecret-1-0 libsecret-common libsmbclient libssl-dev libssl1.1 libsystemd0 libudev1 libwacom-common libwacom2 libwbclient0 libwebkit2gtk-4.0-37 libwebp6 libwebpdemux2 libwebpmux3 libx11-6 libx11-data libx11-xcb1 libxml2 lightdm linux-dtb-current-meson64 linux-image-current-meson64 linux-libc-dev linux-u-boot-odroidn2-current lz4 mutter mutter-common openssl policykit-1 procps python-apt-common python3-apport python3-apt python3-distupgrade python3-distutils python3-lib2to3 python3-problem-report python3-samba python3-software-properties python3-update-manager python3-yaml python3.8 python3.8-minimal samba samba-common samba-common-bin samba-libs smbclient software-properties-common systemd systemd-sysv thunderbird ubuntu-release-upgrader-core ubuntu-release-upgrader-gtk udev update-manager update-manager-core update-notifier update-notifier-common

Hi, I have the same problem. After booting to desktop within 2-5 minutes the monitor reports no HDMI signal. I have to disconnect and reconnect the HDMI cable or in armbian-config choose disable desktop and re-enable desktop (with autologin). Then the picture goes back and does no fall out. Based on forum here I tested another PSU adapter 12V/2A and same problem. Turn monitor OFF and ON with no luck. Must unplug HDMI cable. Latest updated Linux Focal 21.05.2 with Fxce Linux version 5.10.34-meson64 (root@hirsute) (aarch64-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36)) 8.3.0, GNU ld (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36)) XXX.XXX.0.20190321) #21.05.1 SMP PREEMPT Thu May 6 21:24:14 UTC 2021