[SOLVED]: T2 OLinuXino Lime2 Rev. K no boot from SD card

[Kosib]

Hello

I have A20 Lime2 Rev.K and I want to install latest official Ubuntu Bionic from
ftp://staging.olimex.com/Allwinner_Images/A20-OLinuXino/1.latest_mainline_images/bionic/images/

System is starting and after Starting kernel there is shutdown. Green LED blinks shortly.

I modified EEPROM with olinuxino config write 9243 k, saved changes but no result.

I prepared 3 SD cards and there is the same behaviour on each (so I do not suppouse that it is SD card issue).

Below logs from console


U-Boot SPL 2019.04-armbian (Dec 12 2019 - 08:40:57 +0200)
DRAM: 1024 MiB
CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
EEPROM: Ready
Config: Valid
Trying to boot from MMC1


U-Boot 2019.04-armbian (Dec 12 2019 - 08:40:57 +0200) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Model: T2-OLinuXino-LIME2-e8Gs16M-IND Rev.K
Serial:FFFFFFFF
MAC:   02:18:09:03:16:E4
I2C:   ready
DRAM:  1 GiB
SF: Detected w25q128 with page size 256 Bytes, erase size 4 KiB, total 16 MiB
NAND:  0 MiB
MMC:   mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from EXT4... OK
HDMI connected: Setting up a 1920x1080 hdmi console (overscan 0x0)
In:    serial
Out:   vga
Err:   vga
Allwinner mUSB OTG (Peripheral)
Net:   eth0: ethernet@1c50000
starting USB...
USB0:   USB EHCI 1.00
USB1:   USB OHCI 1.0
USB2:   USB EHCI 1.00
USB3:   USB OHCI 1.0
scanning bus 0 for devices... 1 USB Device(s) found
scanning bus 1 for devices... 2 USB Device(s) found
scanning bus 2 for devices... 1 USB Device(s) found
scanning bus 3 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot/boot.scr
3798 bytes read in 3 ms (1.2 MiB/s)
## Executing script at 43100000
U-boot loaded from SD
Boot script loaded from mmc
155 bytes read in 2 ms (75.2 KiB/s)
8426252 bytes read in 472 ms (17 MiB/s)
7606112 bytes read in 425 ms (17.1 MiB/s)
Found mainline kernel configuration
35924 bytes read in 12 ms (2.9 MiB/s)
## Loading init Ramdisk from Legacy Image at 43200000 ...
   Image Name:   uInitrd
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    8426188 Bytes = 8 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 43000000
   Booting using the fdt blob at 0x43000000
EHCI failed to shut down host controller.
   Loading Ramdisk to 497f6000, end 49fff2cc ... OK
   Loading Device Tree to 49784000, end 497f5fff ... OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.   // LED blinks

and after that no signal on HDMI port

Any ideas ?
Regards
Kosib

[LubOlimex]

You tested 3 cards but did you use the same process and tool to prepare them? Can you try preparing one card with another tool, for example BalenaEtcher?

If the boot process stops it is usually related to insufficient power supply - at certain points the board draws more current. How much voltage do you provide to the power jack? Is your power supply good enough? Can you try to attach a Li-Po battery to clear any doubt in the power supply?

The log indicates some issue with the USB controller. Do you have anything attached to the USB?

Did you run any update or upgrade? Your report seems similar to this one: https://forum.armbian.com/topic/5822-lime2-doesnt-start-after-armbian-535-update/

[Kosib]

Hello,

Thank you for quick response and all advices.

I powered up Lime2 with laboratory power supplier. Normal measured current was about 0,5A and no current limit occured (2A has been set). Maybe current limit occured for short time and I did not notice it.

I changed current limit to 4A and everything is ok.

Thank you for accurate indication.

Best regards
Kosib