DRAGO4k

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  1. DRAGO4k
    @jock Thanks man, will update the uboot emmc as soon as possible, any hints on how to do this? thanks a lot !
  2. DRAGO4k
    not working for me... I did not have time to debug it since I need the machine up an running. stuck on blue led after power on, no read/write activity
  3. DRAGO4k
    @jock I noticed a 1s where the USBs are powered off after 8s during boot, I suspect it is between first and second stage of the boot process ? I did not had time to add a serial to mine to see what is going on. will continue to debug this when I will have the time. It might be that the usb to sata bridge is powered off and needs a bit of time to initialize. @Sergei Steshenko I think we should find the actual reason if possible and see how we can fix it. Also you can edit the /boot/armbianEnv.txt file and add rootdelay. As a last point: what you suggested adding a rootdelay (Time to delay before attempting to mount the root filesystem) will not fix "repetitive attempts to reset the HDD with squeaking sound" it will just prolong the wait time and will still fail. PS: ~3A the voltage is 5V as normal. Using 4A to power both unit and hdd leaves 1A for the usb to sata bridge and the HDD itself
  4. DRAGO4k
    I used a 5v 2.5A Logitech power adapter (so it should be real 2.5A or close enough). 1) the power for the USB devices go through the power management chip and is 0 while the unit is turned off 2) the voltage dropped in a range of 4.3-4.8v under load meaning even 2.5A is not enough for the unit alone. 3) a ~0.20mA load on the usb dropped the voltage to 4.5v during idle. 4) a ~0.60mA load on the usb dropped the voltage to 4.2v during idle. I will probably power this from an ATX PSU and measure the amps and usb load. When i have the time I will test with an actual hdd.
  5. DRAGO4k
    @Sergei Steshenko - nobody is doubting you. it just looks like a weird power issue. What type of HDD did you use ? 3.5 ? or 2.5 ?
  6. DRAGO4k
    it looks to me like a problem regarding the negotiation of amps over usb. 1) check power consumption of the hdd in a normal pc - or try to see how much is negotiated 2) check what power you get via Q8 or what is negotiated as a last resort splice a usb cable, get the VCC and GND from a proper power supply. PS: might be also a limit in the device tree for the usb(s) - or a limit of the hardware itself @Sergei Steshenko - your power setup is a bit shady...if I have the time and find a working HDD I will try a spliced usb cable with external 5v power. what type of HDD did you use ? 3.5 ? or 2.5 ?
  7. DRAGO4k
    @jock, sorry for the off-topic but: https://forum.libreelec.tv/thread/17857-rk3288-xt-q8l-v10-aka-chiptrip-q8-9-1-001-image/ in case you are interested. http://www.mediafire.com/file/dnddh7vy81goc99/LibreELEC-XT-Q8L-V10.arm-9.1.001-rk3288.img.zip/file
  8. DRAGO4k
    @jockGreat work on the project. I am having a little bit of trouble reversing engineering the uboot configuration so I can get other distros to boot. I did look over the official documentation but I am stuck at this point. Maybe you can lend a hand. What method did you use ? miniloader or spl ? I would say spl since we erased all the memory. How is the params file stored in your setup and how can we modify it. Can you give some insights on how you configured and wrote uboot to the card ? The final target would be to get Libreelec to boot on this.