No HDMI Video - Anything To Check?

[angrymallard]

Hello all, I am working on a RockPro64 that seems to have a non-functional HDMI output but I'm trying to see if there's anything else for me to check before I RMA the unit. Everything else seems to be working, for example I can load the minimal Armbian image to it, boot it, and then SSH into it and see that the computer itself is working. But at no point is there ever any video output. There's no boot screen visible either. I've tried two different HDMI cables on two different monitors, confirmed these cables/monitors work with other devices, tried to hook up a USB-C hub, etc.

I've tried a few other images as well, LibreELEC (originally I planned for this to be a media center so this was the first one I tried), a few different Armbian images including the XFCE Debian 12 version, the Cinnamon Debian 12 version, the Ubuntu Gnome version, and DietPi. I can't verify that any of these work, although I am pretty certain that these have SSH access disabled by default and without video there's no way for me to enable that to check on these distributions. I also used the "flash_spi" image here https://github.com/sigmaris/u-boot/wiki/...oot-to-SPI to make sure that was working properly.

I also tried to add the kernel module from this guide https://wiki.pine64.org/wiki/ROCKPro64#N..._on_Debian but it seems like my problem is happening before the kernel loads since there's no video output at all when it boots in the first place.

Since I can boot and SSH into the minimal Armbian install, is there anything I should check before I send this unit back? I don't currently have a serial cable but hope that since I can SSH into a terminal I won't need one for looking around at anything.

[tllim]

Hello all, I am working on a RockPro64 that seems to have a non-functional HDMI output but I'm trying to see if there's anything else for me to check before I RMA the unit. Everything else seems to be working, for example I can load the minimal Armbian image to it, boot it, and then SSH into it and see that the computer itself is working. But at no point is there ever any video output. There's no boot screen visible either. I've tried two different HDMI cables on two different monitors, confirmed these cables/monitors work with other devices, tried to hook up a USB-C hub, etc.

I've tried a few other images as well, LibreELEC (originally I planned for this to be a media center so this was the first one I tried), a few different Armbian images including the XFCE Debian 12 version, the Cinnamon Debian 12 version, the Ubuntu Gnome version, and DietPi. I can't verify that any of these work, although I am pretty certain that these have SSH access disabled by default and without video there's no way for me to enable that to check on these distributions. I also used the "flash_spi" image here https://github.com/sigmaris/u-boot/wiki/...oot-to-SPI to make sure that was working properly.

I also tried to add the kernel module from this guide https://wiki.pine64.org/wiki/ROCKPro64#N..._on_Debian but it seems like my problem is happening before the kernel loads since there's no video output at all when it boots in the first place.

Since I can boot and SSH into the minimal Armbian install, is there anything I should check before I send this unit back? I don't currently have a serial cable but hope that since I can SSH into a terminal I won't need one for looking around at anything.

Please note that minimal Armbian build doesn't support HDMI output.

[KC9UDX]

U-Boot should, unless it's one that only outputs to serial.