doesn't boot, no video
#1
I have a new ROCK64, but it doesn't boot. I plug in HDMI, USB keyboard, and a generic 5V 2A power supply. Three LEDs light up on the board: DC IN, PWR, and STBY. No video signal comes in, and the keyboard doesn't respond to caps lock. Any ideas what I'm doing wrong?
  Reply
#2
(09-10-2019, 10:02 PM)cjyar Wrote: I have a new ROCK64, but it doesn't boot. I plug in HDMI, USB keyboard, and a generic 5V 2A power supply. Three LEDs light up on the board: DC IN, PWR, and STBY. No video signal comes in, and the keyboard doesn't respond to caps lock. Any ideas what I'm doing wrong?


The rock64 needs up to 3A when you have stuff plugged into the USB ports.

As for HDMI, are you using a monitor or tv? Monitors can be a bit iffy if they or DVI adaptors send corrupt or blank EDID. I have to force my monitor to 1080p to get it to work reliably.
  Reply
#3
(09-10-2019, 10:06 PM)evilbunny Wrote:
(09-10-2019, 10:02 PM)cjyar Wrote: I have a new ROCK64, but it doesn't boot. I plug in HDMI, USB keyboard, and a generic 5V 2A power supply. Three LEDs light up on the board: DC IN, PWR, and STBY. No video signal comes in, and the keyboard doesn't respond to caps lock. Any ideas what I'm doing wrong?


The rock64 needs up to 3A when you have stuff plugged into the USB ports.

As for HDMI, are you using a monitor or tv? Monitors can be a bit iffy if they or DVI adaptors send corrupt or blank EDID. I have to force my monitor to 1080p to get it to work reliably.

Thanks for your quick reply. I bought 2 new power supplies, both rated at 5V/3A. I've tried the board against 3 different (old) monitors. Two of those require an HDMI to DVI cable; the other is a pretty old TV that's at least got an HDMI port. I'm seeing the same results in every case. The LEDs light up on the board, but there's no video signal. Maybe I just need a newer monitor?
  Reply
#4
More experiments: I took out the SD card and unplugged everything except the ethernet cable, then applied power to the board. No lights came on on that ethernet jack, or on the switch port. If it has no media, it should be trying to netboot, shouldn't it?

The funny thing is, I ordered 5 of these boards together, and they're all showing the same behavior. I must be doing something wrong. The only thing they respond to is holding the power button for 5 seconds; then the STBY and PWR LEDs both turn off.
  Reply
#5
Try accessing your board remotely via SSH. Can you see your board's address on your LAN. Sounds like you may be having video issues with the monitors you are using.
  Reply
#6
(09-14-2019, 06:20 AM)cjyar Wrote: Thanks for your quick reply. I bought 2 new power supplies, both rated at 5V/3A. I've tried the board against 3 different (old) monitors. Two of those require an HDMI to DVI cable; the other is a pretty old TV that's at least got an HDMI port. I'm seeing the same results in every case. The LEDs light up on the board, but there's no video signal. Maybe I just need a newer monitor?


For my DVI monitor I had to add the following:

Code:
drm_kms_helper.edid_firmware=edid/1920x1080.bin

To the end of the kernel append line, otherwise it was more miss than hit with auto detection.
  Reply
#7
Thanks for all the help. I think I get it now: The boot on these little boards doesn't know how to initialize the network. So it was pointless for me to watch for network activity when there was no boot media. I flashed an SD card with ayufan's bionic, and it booted just fine. I'll mess with the video later, or maybe hook up a serial console.
  Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
Bug u-boot (forks) status mcerveny 6 803 10-14-2019, 12:50 PM
Last Post: ayufan
  Rock64 for video surveillance martinschm 6 364 09-19-2019, 01:56 AM
Last Post: Jozek
  Unable to boot from SPI stevefan1999 4 751 05-01-2019, 04:47 PM
Last Post: rhens1
  Tracking info doesn't make sense cslycord 4 150 04-29-2019, 05:32 PM
Last Post: cslycord
  ROCK64 RK3328 state of 4K (and FHD) video playback in FBdev kroko 3 445 03-31-2019, 11:43 AM
Last Post: kroko
  No Boot, Red Green and White flash at 1 sec intervals wesleykonrad 2 284 01-28-2019, 11:54 PM
Last Post: wesleykonrad
  Video playback performance va88 0 308 12-19-2018, 01:19 PM
Last Post: va88
  boot priority - has precedence changed? jovval 1 663 09-22-2018, 02:02 AM
Last Post: mcerveny
Question Need help on 4K Video playback leonqin 4 826 08-19-2018, 06:49 AM
Last Post: soerenderfor
  Enable I2C, I2s, SPI in boot-config file? HelgeMK 3 1,556 08-14-2018, 10:59 AM
Last Post: pas059

Forum Jump:


Users browsing this thread: 1 Guest(s)