incorrect refresh for RG351MP?

[ghost]

hardware:

RG351MP (odroidgoadvance builds)

Lakka version: nightiles most notably: https://nightly.builds.lakka.tv/2021-10-31/OdroidGoAdvance.arm/Lakka-OdroidGoAdvance.arm-nightly-20211031-029641c-rg351mp.img.gz

what I expect:

Video -> Output -> Set display-Reported refresh Rate == 60.00Hz

What I get instead:

Video -> Output -> Set display-Reported refresh Rate == 149.129Hz

summary:

the present builds for RG351MP has set the refresh rate absurdly high (`49/129 Hz as above) this seems to cause the reported frame rates when you enable ramerate notifications on to fluxtuate during menus and cores

notes:

doesn't seem to be the case with the similarly RG351P builds and hardware.

[zyliu-OU]

Hi, I install Lakka on RG351MP too, why I can not even boot? Have you ever had this issue before?

[ghost]

Hi, I install Lakka on RG351MP too, why I can not even boot? Have you ever had this issue before?

boots just fine. I use a 16GB sd card placed into the TF/Int slot . fresh install (not upgrade). I flash onto said card using dd (on linux) after unzipping the image. as mentioned above this is the image used: https://nightly.builds.lakka.tv/2021-10-31/OdroidGoAdvance.arm/Lakka-OdroidGoAdvance.arm-nightly-20211031-029641c-rg351mp.img.gz

[zyliu-OU]

Hi, I install Lakka on RG351MP too, why I can not even boot? Have you ever had this issue before?

boots just fine. I use a 16GB sd card placed into the TF/Int slot . fresh install (not upgrade). I flash onto said card using dd (on linux) after unzipping the image. as mentioned above this is the image used: https://nightly.builds.lakka.tv/2021-10-31/OdroidGoAdvance.arm/Lakka-OdroidGoAdvance.arm-nightly-20211031-029641c-rg351mp.img.gz

I tried, it failed. When I first got the machine, Lakka works, then second day when I boot it, it just faild, other firmwares (ArkOS or 351ELEC) are fine, let me try again.

[blindm0use]

TIPS ON GETTIN LAKKA WORKING ON RG351MP

After flashing a new SD card of a capacity not less than 2gb with Lakka (I used latest development image and a 4gb SD card) remount it on your computer and do the following:

1. Download latest stable release of 351ELEC
2. Navigate to the downloaded .gz archive and open it (can be done with 7-Zip if on Windows).
3. Open .img within the archive
4. Navigate to "0.fat"
5. Extract "rk3326-rg351mp-linux.dtb"
6. Navigate to the root of your Lakka SD card and delete every .dtb file
7. Place .dtb file from the Step 5 into the root of Lakka SD card
8. Navigate to "extlinux" folder of Lakka SD card
9. Leave only "extlinux.conf" & "rk3326-rg351mp-linux.dtb.conf" files in the folder
10. Edit each of these two files with text editor (Notepad) and replace the 4th line starting with "APPEND " with the following: _APPEND boot=UUID=2102-1725 disk=UUID=677fc905-b613-44b1-ba7a-55441415562e quiet console=ttyFIQ0 console=tty0 net.iframes=0 fbcon=rotate:0 ssh consoleblank=0 systemd.show_status=0 loglevel=0 panic=20_
11. Safely unmount the modified Lakka SD card and insert it into your RG351MP;

By following the steps above, you will have a fully bootable Lakka on RG351MP with correct battery management, working wifi dongle, and great RetroArch frontend. The only problem is volume buttons not working and low volume, but these can be assigned to hotkey and a key combination as an alternative until the fix arrives.

[zyliu-OU]

I will give it a try, thanks! 👏😆

[vanfanel]

@auxfam Do you know if the original issue is supposed to be fixed by now? I am trying latest stable Lakka and refresh rate is still wrong.... Which renders it useles on the machine.

[blindm0use]

@zyliu-OU, we have determined with @armadillu that there might be different hardware revisions of RG351MP, which makes Lakka not bootable for some units.

But by simply swapping original dtb with this one, the system starts without a hiccup. Only the volume is not balanced in relevance to the the gain. At max vol, i.e. gain at 298% (this is the only way to make the unit sound louder), the sound starts cracking