tony013

Hey you overestimate my skills. I have no idea about system development - and whatever I do in that context, I had to learn bit by bit. I tried to compile armbian on my linux box, but I wasn't successful. So what I can do, is testing and sending feedback.

I thought I had found my solution, but unfortunately that is not the case. I tried boot from usb-media - but that's no solution either. It doesn't boot, if the boot drive was plugged into a different usb-slot. What a mess!

I did some more advanced tests and I have to correct my judgment. The sound of armbian cannot keep up with LE! While LE's multichannel sound is bright and clear and gives a good impression of space, armbian's same movie sounds like it's coming out of a watering can. Dull and without spatial resolution. All speakers are addressed but it just doesn't sound. I have not found any other settings how to further adjust the sound. Guess I need a multi-boot solution after all.

Well, I was confused, as it does not have a HDMI option. Only internal audio with multichannel ... ... but after all, it seems to work. So ... Thank you very much for your extremely appreciated work. Looks like all my wishes have been fulfilled: - launches from emmc - fan is temperature controlled (and thus almost inaudible) - video with multichannel audio seems to work - I can switch between kodi and desktop - on top of that the small box works as NAS would it be possible, to change selection between kodi and desktop based on the user, who logs into the system?

Well - than its odd! I tried 21.02.3 which works perfect. Anything is clear and understandable. And it was the first linux image, that boots right from emmc (written by balena with usb-adapter) No I haven't. If current behaviour is ok for you, than 21.05.1 is not for me. I'm fine with 21.02.3 !

I tried the new release, but boot fails like this: - I waited more than 10m but nothing happens

Thank you for that info. So I setup an sdcard with armbian mainline (Armbian_21.02.3_Rockpi-4a_buster_current_5.10.21_xfce_desktop) and had audio out of the box Then I compared Armbian with LE nightly - same movie (pursuit at the end of bourne IV), that had many frame losses on armbian but smooth audio. LE on the other side had perfect video decoding but audio with frequent drop outs. So I like LE for video playback, but I love the idea from this multimedia assembly that I could choose between kodi and desktop at login time. Selection in top menu bar is suboptimal, as my screensize is optimized for movies, so the topbar menu is off screen. I would prefer a menu in the center of the screen like those from boot managers. Is there a way to get dualboot with LE and armbian - or at least a general way to boot from usb (without sdcard!) ?

Thank you - that finally did the trick!

Hm, I have a rockpi 4A connected to AVR via HDMI and video playback by beamer. Using nightly LE works quite good (some audio dropouts regularly, but acceptable), but Armbian Legacy Multimedia does not give any sound at all. I followed the advices in this thread (without self compiling). With this multimedia setup I can't even select HDMI audio. There's only internal audio and I don't know, where that should be connected ... What did I miss? How can I setup HDMI audio output in armbian?

Thank you @PetrozPL ... but your script does the same as other scripts: write values to duty_cycle and period. As I already wrote, that does not work on my system. Your script returns (as expected) -1 ... and manually writing value to duty_cycle or period results in "no such file or directory". So may be, its related to the different kernel version, other dtb, whatever. I don't know, where to search for support/solution. Could you please check your dts file, whether it contains "duty_cycle" and "period"? If you post the surrounding paragraph, I could give it a try. When I use raspian and install the original driver from radxa, fanspeed is related to cputemperature. With armbian there's no way to change fanspeed. Well - original driver from radxa uses pigpio and python. I tried to port pigpio to rockpi, but I wasn't successful. I don't care about language - anything that works would be ok for me. The point is, I don't know nothing about lowlevel programming of pi/rockpi, but if you gimme a hand, I'll try to solve it.

Hi, I know, this thread is pretty old. Hope its okay to post here anyway. I have a rockpi 4A with penta-sata-hat, armbian-buster (21.02.3) desktop with current kernel and following the instructions from this thread turns the fan on. Although I'm happy with the turning fan, its too loud and I'd like to be able to vary fanspeed. Following advices from other threads like writing values to .../duty_cycle and .../period does not work. I don't have such files. Pwm related tree from sysfs looks like this: find /sys/class/pwm/pwmchip0/ /sys/class/pwm/pwmchip0/ /sys/class/pwm/pwmchip0/uevent /sys/class/pwm/pwmchip0/power /sys/class/pwm/pwmchip0/power/runtime_active_time /sys/class/pwm/pwmchip0/power/runtime_status /sys/class/pwm/pwmchip0/power/autosuspend_delay_ms /sys/class/pwm/pwmchip0/power/runtime_suspended_time /sys/class/pwm/pwmchip0/power/control /sys/class/pwm/pwmchip0/unexport /sys/class/pwm/pwmchip0/device /sys/class/pwm/pwmchip0/export /sys/class/pwm/pwmchip0/subsystem /sys/class/pwm/pwmchip0/npwm Any hints on how I could modify fan speed (based on temperature values)? I also tried the script from nanopi m4 thread - but that script simply turns the fan off. No matter what cpu temperature might be. I have to reboot to get the fan spinning again.