Creating a bug report/issue
I have searched the existing open and closed issues
It seems there are similar issues, but they were either outdated, showing different errors and/or using different boards:
- HDMI failed on RockPi 4 - #9 by DarkDabula
- Radxa Rock5B: Does HDMI support need additional installation?
- No HDMI output on ROCK64 with DietPi 7.8.2
- RK3399 HDMI output and USB 3.0 not working with Linux 6.1
The problem: My new Rock (Pi) 4B+ board does not seem to provide HDMI output, but works fine over SSH.
Required Information
- DietPi version |
cat /boot/dietpi/.version:G_DIETPI_VERSION_CORE=9 G_DIETPI_VERSION_SUB=9 G_DIETPI_VERSION_RC=0 G_GITBRANCH='master' G_GITOWNER='MichaIng' G_LIVE_PATCH_STATUS[0]='applied' G_LIVE_PATCH_STATUS[1]='applied' G_LIVE_PATCH_STATUS[2]='not applicable' G_LIVE_PATCH_STATUS[3]='not applicable' - Distro version |
echo $G_DISTRO_NAME $G_RASPBIAN:
bookworm - Kernel version |
uname --all:
Linux DietPi 6.6.56-current-rockchip64 #1 SMP PREEMPT Thu Oct 10 10:50:06 UTC 2024 aarch64 GNU/Linux - Architecture |
dpkg --print-architecture:
arm64 - SBC model |
echo $G_HW_MODEL_NAMEor (EG: RPi3)
ROCK 4 (aarch64) - Power supply used | (EG: 5V 1A RAVpower) :
90W PD USB-C from monitor - SD card used | (EG: SanDisk ultra)
Verbatim Premium MicroSDHC Card 32GB, V10, U1
Additional Information (if applicable)
- Software title | (EG: Nextcloud)
n.a. - Clean minimal install (no other software running) - Was the software title installed freshly or updated/migrated?
n.a. - Clean minimal install (no other software running) - Can this issue be replicated on a fresh installation of DietPi?
Yes, with both of the latest Bookworm and Bullseye releases for the Rock Pi 4
Steps to reproduce
- Flash a (fresh) MicroSD card with the latest DietPI Bookworm image for Rock Pi 4 (I am using Balena Etcher to do so) :
https://dietpi.com/downloads/images/DietPi_ROCKPi4-ARMv8-Bookworm.img.xz - Insert MicroSD Card into Rock 4 board
- Connect HDMI-Cable to monitor and Rock 4 board, and set monitor to input from HDMI cable
- Connect power to Rock 4 board
Expected behaviour
- I expect the display to show visual output of a command prompt / terminal
Actual behaviour
- The display states: ‘No input’. Re-connecting the HDMI-cable or a power-cycle on the board does not help.
Extra details
- The monitor is pretty new, never had any issues with it, it is an LG 27UP85NP-W 4K monitor
- The same cable and input channel on the monitor work fine with another laptop as input source (outputting 4K@60hz without problems).
Output of some of the commands requested to try in other / similar topics:
$ cat /proc/device-tree/model
Radxa ROCK Pi 4B
$ fbset -i
mode "3840x2160"
geometry 3840 2160 3840 2160 32
timings 0 0 0 0 0 0 0
rgba 8/16,8/8,8/0,0/0
endmode
Frame buffer device information:
Name : rockchipdrmfb
Address : 0
Size : 33177600
Type : PACKED PIXELS
Visual : TRUECOLOR
XPanStep : 1
YPanStep : 1
YWrapStep : 0
LineLength : 15360
Accelerator : No
Running fbset -xres 1920 -yres 1080 does not make any change.
$ dmesg | grep hdmi
[ 0.077630] platform ff900000.vop: Fixed dependency cycle(s) with /hdmi@ff940000
[ 0.077742] platform ff8f0000.vop: Fixed dependency cycle(s) with /hdmi@ff940000
[ 0.077822] platform ff940000.hdmi: Fixed dependency cycle(s) with /vop@ff8f0000
[ 0.077906] platform ff940000.hdmi: Fixed dependency cycle(s) with /vop@ff900000
[ 2.314523] dwhdmi-rockchip ff940000.hdmi: Detected HDMI TX controller v2.11a with HDCP (DWC HDMI 2.0 TX PHY)
[ 2.317333] rockchip-drm display-subsystem: bound ff940000.hdmi (ops 0xffff8000811dad40)