126 lines
4.1 KiB
Markdown
126 lines
4.1 KiB
Markdown
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## Problem: Could not connect to Helios64
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### Faulty Power Supply
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Verify whether [LED1](/helios64/led/) is turned on. If not tighten DC cable from PSU.
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Verify whether LED on the PSU is turned on. If not tighten AC cable from PSU
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If problem still occurs, replace the PSU.
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### OS Failure
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Verify whether [System Activity LED](/helios64/front-panel/#helios64-enclosure) is blinking. If it is not, reset or power cycle.
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If problem still occurs, please capture the serial console output and report it to [forum](https://forum.armbian.com/forum/51-helios64/).
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### Kernel Panic
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If [System Error LED](/helios64/front-panel/#helios64-enclosure) blinking, there was kernel panic. Please reset the system.
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If problem still occurs, please capture the serial console output and report it to [forum](https://forum.armbian.com/forum/51-helios64/).
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### Network down
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Verify whether Ethernet LED turned on. If it is not, try to unplug and re-plug the network cable.
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If network still down, try other Ethernet port.
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### Corrupted filesystem
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Boot from micro SD card and execute following command to repair system partition on eMMC
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```
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fsck -p /dev/mmcblk1p1
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```
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or
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```
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btrfs check --repair /dev/mmcblk1p1
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```
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if your system partition formatted with BTRFS.
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### Micro SD card slot broken
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Try to flash OS directly to eMMC using [maskrom mode](/helios64/maskrom/)
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### Old bootloader
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On October 5th, 2020 there was device tree (dtb) filename change. It applied to Armbian 20.08.8.
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Originally the filename is **rk3399-helios64.dtb** and changed into **rk3399-kobol-helios64.dtb**
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Boot from micro SD card and execute following commands
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```
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sudo mkdir -p /mnt/system
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sudo mount /dev/mmcblk1p1 /mnt/system
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sudo ln -sf rk3399-kobol-helios64.dtb /mnt/system/boot/dtb/rockchip/rk3399-helios64.dtb
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sudo umount /mnt/system
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sudo poweroff
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```
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Remove the micro SD card and power on the system.
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After boot successfully to eMMC, we strongly suggest to update the bootloader using armbian-config.
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### Rootfs is not accessible
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If you have transfer the rootfs to SATA or USB, make sure the device is still accessible and you don't remove the device.
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Boot from micro SD card and execute following command,
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```
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sudo mkdir -p /mnt/system
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sudo mount /dev/mmcblk1p1 /mnt/system
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grep "rootdev" /mnt/system/boot/armbianEnv.txt
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```
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Take note of UUID value and run,
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```
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sudo blkid
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```
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Verify if you have device with the same UUID. If the device is accessible, it might have corrupted filesystem. Run *fsck* to check and fix it.
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---
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## Problem: Serial console does not appear
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### Driver not installed
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Make sure you have FTDI VCP driver installed. You can download the driver from [FTDI Website](https://www.ftdichip.com/Drivers/VCP.htm)
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### Jumper P13 closed
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Make sure jumper P13 is open otherwise it will disable the built-in USB to Serial converter. Refer to [USB Console/Recovery Mode (P13)](/helios64/jumper/#usb-consolerecovery-mode-p13)
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### Cable is not plugged correctly
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When you put the back panel make sure to align the port and push a bit before securing with screw.
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If the USB-C port cannot hold the cable properly and loose the cable, you need to shave the cable a bit so the plastic does not touch the back panel.
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Photo from [TDCroPower at Armbian Forum](https://forum.armbian.com/topic/15431-helios64-support/page/4/?tab=comments#comment-110859)
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---
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## Problem: I have broken bootloader on eMMC and unable to boot, how to force boot from micro SD ?
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Make sure the system is powered off and insert the micro SD card.
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Short [P10](/helios64/jumper/#boot-mode-p10-p11) with jumper cap, power on and remove the jumper cap before boot Linux (~5 seconds after power on).
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## Problem: How to clean up the eMMC
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### System still booting from eMMC after deleting the partition
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Bootloader located between first block and first partition. Clearing partition table does not remove the bootloader.
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Execute following command to erase Partition table, bootloader and partition superblock.
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```
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sudo dd if=/dev/zero of=/dev/mmcblk1 bs=512 count=65535
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sudo sync
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```
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