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HDMI is not connected

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jeckor's picture
jeckor
Junior(0)
HDMI is not connected

Hi everyone! 
 
I have a PicoZed Development Kit and when I connect the HDMI cable the DS1 is not switch on. Other LEDs are switch good.
 
The leds that are on are:
DS8 (power) - red;
DS7 - blue;
D3 (SOM) - green;
D4 (SOM) is switch off, so Zynq PL is configured.
 
I'm connecting a monitor (VGA) through HDMI-VGA adapter. 
 
What could be the problem?
 
 
 

mbrown's picture
mbrown
Moderator(7)
Hello.

Hello.

Please see this related post and let us know if the problem remains.

http://picozed.org/content/sd-card-image-picozed-sdr

 

/Matt

jeckor's picture
jeckor
Junior(0)
So, I want to share with you

So, I want to share with you my current "progress".
 
Yesterday it's only DS8 (power) switch on. SOM was dead. But later I changed P8 (that gives 1.8V default) to give 3.3V and it worked (other LEDs switch on, see first post), but HDMI not connected. 
 
Today SOM is not working again.
 
Probably SD image is reason of this problem but I'm not sure. The fact is that I many times changed and rewriting SD card but now original state of card is restored and it's not working. 

jeckor's picture
jeckor
Junior(0)
New information. When I

New information. When I checked the resistor R250 all the LEDs switch on as it is necessary. But when I turn off and turn on the board only red LED DS8 (power) switch on again. When I checked again this resistor the board is working again as it is necessary, but no HDMI.

jeckor's picture
jeckor
Junior(0)
Sorry but I'm still waiting

Sorry but I'm still waiting for an answer. I saw the related post and didn't saw there the solution to my problem.  I followed the instructions of https://wiki.analog.com/resources/tools-software/linux-software/zynq_images (updated Linux image on SD card). It didn't helped me.

mbrown's picture
mbrown
Moderator(7)
Now that you have re-imaged

Now that you have re-imaged the SD card according to ADI wiki page, can you please confirm that you've followed the Quick Start instructions for the kit?

http://picozed.org/sites/default/files/documentations/QSC-Kit%20-%20Pico...

 

/Matt

jeckor's picture
jeckor
Junior(0)
Yes I followed the Quick

Yes I followed the Quick Start Card. There are devices that are connected to the my board:

  1. UART cable. I'm using Tera Term terminal on my Windows host but PC don't see virtual COM port from the board any more.
  2. USB-microUSB adapter is connected to USB OTG on the board. I connect USB keyboard through this adapter.
  3. Monitor is connected to HDMI on the board through HDMI-VGA adapter.
  4. LTE/MIMO antenna using the included U.FL-to-SMA cables.
  5. 12V Power.
  6. Ethernet cable from board to PC
  7. S1, S3 and S4 on the SOM to the logical 1.
  8. P8 on the FMC to 3.3V (I tried 2.5V and 1.8V, don't work)
  9. P17 on the FMC to USB OTG.

I remind that only the DS8 (5V power) led turn on after that I turn on the board. 

mbrown's picture
mbrown
Moderator(7)
Initially, you were able to

Initially, you were able to power up and power the SOM:

DS8 (power) - red;
DS7 - blue;
D3 (SOM) - green;
D4 (SOM) is switch off, so Zynq PL is configured.

 

But now, you don't even see D3 (SOM) light up, indicating that it's not powering up successfully.

 

Is that correct?

 

P8 position should not matter. Are you saying that when Vadj is set for 3.3V the system powers up? (D3 SOM illuminates?)

 

Thanks for clarifying. I want to make sure we debug first things first.

 

/Matt

jeckor's picture
jeckor
Junior(0)
"P8 position should not

"P8 position should not matter. Are you saying that when Vadj is set for 3.3V the system powers up? (D3 SOM illuminates?)"
 
In first time the board didn't work. Then I change P8 to 3.3V and all LEDs lighted up correctly (except HDMI). Then the board didn't work again. After that when I checked the board with ohmmeter something was "wrong" and all necessary LEDs lighted up correctly again. Now ohmmeter don't help me any more =)

jeckor's picture
jeckor
Junior(0)
I checked if the power comes

I checked if the power comes to the SOM. This is true. When I checked the capacitor C205 on the SOM then something is again short-circuited and all LEDs are lit correctly (except HDMI). Progress did not last long - if you turn off the board then it will not be work again.

If the power goes to the SOM then something else is the problem. Perhaps this is HDMI (it's only HDMI's LED is not lit).

jeckor's picture
jeckor
Junior(0)
That's what I read on my

That's what I read on my terminal when I short-circuited the SOM and all LEDs lighted up correctly (except HDMI):
 
"ALSA device list:
#0: HDMI monitor
#1: ZED ADAU1761"
 
When linux booted I didn't see any errors. But HDMI monitor is not working.

jeckor's picture
jeckor
Junior(0)
Something else when booting

Something else when booting linux:
 
" * Setting up X directories...  [OK]
   * STARTDISTCC is set to false in /etc/default/distcc
   * /usr/bin/distcc not starting
   * Starting IIO Daemon iiod   [OK]"
 
As I know this problem may be in "STARTDISTCC" then not started. 
The rest of the Linux boot normally but only through the terminal to the PC. Monitor in not working. VGA-HDMI adapter may be the problem.

jeckor's picture
jeckor
Junior(0)
Yes that's correct. Can the

Yes that's correct. Can the monitor be a problem? A week ago only HDMI didn't work

shenjiaqi's picture
shenjiaqi
Junior(0)
I face the same problem

    Dear jeckor
        my name is yangyong ,recently I meet the same problem.Did you solved the problem?Can you tell me how you solved the problem?
   thanks

jeckor's picture
jeckor
Junior(0)
Hi

Hi
I didn't solved this problem. I could only to connect Linux through the terminal on the PC. HDMI does not work and there are three variants why:

1. I use a bad VGA-HDMI adapter;

2. HDMI on the board is defective.

 

Besides I did not always can turn on the board (only power LED switch on).

shenjiaqi's picture
shenjiaqi
Junior(0)
Hello

Hello

I meet the same problem(only power LED DS8 switch on).

shenjiaqi's picture
shenjiaqi
Junior(0)
Hello

hello

I don't think it's the problem of the cable(VGA-HDMI dadpter).Because I use the same cable when i start  (zedboard+fmcommc3),it works fine. 

jeckor's picture
jeckor
Junior(0)
Maybe it's only the my

Maybe it's only the my adapter is a bad.
 
If I want to turn on the board I take my ohmmeter and short circuit something =) It's not well but it's working. Now I can work with SDR across terminal on the PC but it's not comfortable to me. I'm prefer GUI interface.

mbrown's picture
mbrown
Moderator(7)
The process of "short

The process of "short circuiting" the board to get it to power up or boot has be concerned. Some of the symptoms you report sound related to another debug effort underway. I'll know more on Monday and will post back to this thread.

 

/Matt

shenjiaqi's picture
shenjiaqi
Junior(0)
Hi

   hi
    why I can't start the Linux ?
   I follow the hardware setup and the demo setup.
  when I take on the S5 ,only the D8  is lighting up!
thanks

shenjiaqi's picture
shenjiaqi
Junior(0)
Hi

​I need you help?  
my computer can't detect the uart? What kand of drive did you setup on your computer?
(CP210x USB-to-UART bridge driver )I had setuped on my computer.but it did'nt work.

mbrown's picture
mbrown
Moderator(7)
jeckor

jeckor

Are you able to try the following update of the SOM voltage supply sequencing chip (ADM1166):

----

Analog Devices provides a simple Linux script executed on Zynq to download the latest ADM1166 firmware and program the SOM. You will need a networked router with DHCP capability. Follow the instructions at the wiki site listed below. Look for the section “Programming the ADM1166 Power Sequencer – Using Linux or HyperTerminal Program”.

https://wiki.analog.com/resources/eval/user-guides/pzsdr/power-and-sequencing

----

/Matt

jeckor's picture
jeckor
Junior(0)
Thanks but now I have the

Thanks but now I have the more serious problem. FMC don't work. U8 is the source of problem. As I know this chip is the source of SYNC_SUPPLY signal that are needed for other stabilizers that generates 5V, 3.3V and other. Now we are trying to solve this problem. 

mbrown's picture
mbrown
Moderator(7)
On the FMC Carrier, do you

On the FMC Carrier, do you have P8 such that VADJ = 2.5 or 3.3V?

 

/Matt

jeckor's picture
jeckor
Junior(0)
3.3V

3.3V

mbrown's picture
mbrown
Moderator(7)
Please have a look at this

Please have a look at this new post and see if you find any symptoms related to yours.

 

http://picozed.org/content/picozed-sdr-z7035-ad9361-power-sequencer-update

 

/Matt