HDMI video dead after 4 days

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DavidTangye
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HDMI video dead after 4 days

Post by DavidTangye » Thu Apr 24, 2014 7:23 pm

HI folks, I finally got to use my U3 about a fortnight ago. I was very impressed with it, until the video started dying after about 2 days. Firstly it started displaying a lot of red dots. then later it went all reddish. Then it lost video altogether. I tried 5 different monitors and 2 or 3 different cables, with the same result. I presume now that this unit is simply defective. So I am back using my U2, which by the way, continues to work nicely.

Can I contact anyone about a replacement for the U3?

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Re: HDMI video dead after 4 days

Post by odroid » Thu Apr 24, 2014 9:24 pm

Contact "odroid at hardkernel dot com" with a URL of this thread.
She will help you for the RMA.

Can you tell me which image did you use and what is you major application software?

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Re: HDMI video dead after 4 days

Post by DavidTangye » Sun Apr 27, 2014 4:29 pm

The Ubuntu 13.10 image was supplied with the U3.

I think I did a standard package upgrade to it. I did not install anything, except a couple of favourite apps like Midnight Commander, and these were via the standard repositories.

An update: I started it up again just before the weekend, using a new small TV with HDMI input. I got the lightdm desktop login but the screen was flickering a lot, and the colours were bad. It is possible that the hardware might be OK, but the video driver is trying to run the video system too fast for the monitors. Does that sound worth testing here? If so, is there anywhere I can change any config files? I could do this by mounting the eMMC via the MicroSD adapter into another PC here.

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Re: HDMI video dead after 4 days

Post by mdrjr » Sun Apr 27, 2014 9:53 pm

Screen flickering normally is either the HDMI cable or your screen.

Let me explain "your screen".

HDMI have an i2s signal that sends Audio for your monitor. Some monitors are dumb enough to takes this audio stream is take it as a video.

That's normal a sign of a monitor that has the HDMI(DVI) input.

Try one of the DVI configurations in odroid-config and let me know.

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Re: HDMI video dead after 4 days

Post by corpsman » Sun Apr 27, 2014 11:05 pm

Hello,

my Odouid U3 worked 3 weeks perfektly, now the screen is black.

I also tried the different .scr files from here with different HDMI devices but no changes.

Remote acess via ssh is possible.
odroid@odroid:~$ uname -a
Linux odroid 3.8.13.16 #1 SMP PREEMPT Tue Feb 11 10:47:21 BRST 2014 armv7l armv7l armv7l GNU/Linux
By the actual point of view the device is useless, because i need it to display movies. Is there anyone who can help me, 200 Euros are a bit much for throwing them away :(.

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Re: HDMI video dead after 4 days

Post by odroid » Mon Apr 28, 2014 10:00 am

Flash the latest Xubuntu image in this link and let us know the result.
http://forum.odroid.com/viewtopic.php?f=77&t=3238

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Re: HDMI video dead after 4 days

Post by corpsman » Tue Apr 29, 2014 12:20 am

As you could see from my previous post i already used the newest xubuntu image

xubuntu-13.10-desktop-armhf_odroidu_20140211.img

Anyway i did it again, and the screen is still black

I even tried

xubuntu-13.10-desktop-armhf_odroidx2_20140209.img (the even the blue led does not flash)

but it did not work :(.

Fortunatunelly i used a SD-Card so my emmc modul is unchanged and i could still use ssh to connect on the device. So what is next step on your troubleshooting list ?

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Re: HDMI video dead after 4 days

Post by mdrjr » Tue Apr 29, 2014 12:24 am

Try an Android image :)

Android uses a different HDMI driver so we can rule out software :)

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Re: HDMI video dead after 4 days

Post by corpsman » Tue Apr 29, 2014 3:42 am

To be shure that i did not do something wrong here is what i did.

1. i downloaded : sd_self_installer.img.zip
fromt here http://dn.odroid.com/4412/Android/4.4.2 ... /ODROID-U/

2.i Unzipped it and used the dd command to flash the sd-device
corpsman@corpsman2:/sda5/sda5/Install_Odroid/Android$ sudo dd if=sd_self_installer.img of=/dev/mmcblk0 bs=4M
[sudo] password for corpsman:
125+0 records in
125+0 records out
524288000 bytes (524 MB) copied, 81.2018 s, 6.5 MB/s
corpsman@corpsman2:/sda5/sda5/Install_Odroid/Android$ sudo sync
corpsman@corpsman2:/sda5/sda5/Install_Odroid/Android$
with a 2GB-SD Card and did the same thing with a 8GB-SD- Card

3. According to this Link http://com.odroid.com/sigong/nf_file_bo ... g=&bid=214
the Blue LED should flash while booting up the device the first time.

With the 2GB card the Blue LED lights but not flashes. The Fan went on as described. After 5 Minutes i broke it up.
-> Looking with Gparted the SD-Card was empty??

With the 8GB card the Blue LED lights for about 2 mins and then started flashing, i waited 15 minutes and watched the blue led flashing. Then i turned it of. Inserting the 8GB-SD in my Linux PC it shows now 4 Partitions
first : 133,9MB
second 1 GB
third 2 GB
forth 4,1 GB
By browsing the files Partition second and third looked like a linux system with the typical folder structure. forth was empty and first showed only one folder called backup

Over all these Process i had a black screen, i switched between different devices (all working last week) but always the black screen.

So what to do now ?

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Re: HDMI video dead after 4 days

Post by mdrjr » Tue Apr 29, 2014 5:17 am

I think your board is damaged :(

By your description looks like it was flashed ok to the card :(

You can:

1. Contact odroid (at) hardkernel (dot) com with the link of this thread of the RMA process
OR
Try another monitor/Another HDMI cable.

In any of cases sorry :(

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Re: HDMI video dead after 4 days

Post by DavidTangye » Wed Apr 30, 2014 12:50 pm

mdrjr wrote:Screen flickering normally is either the HDMI cable or your screen.
Let me explain "your screen".
HDMI have an i2s signal that sends Audio for your monitor. Some monitors are dumb enough to takes this audio stream is take it as a video.
That's normal a sign of a monitor that has the HDMI(DVI) input.
Try one of the DVI configurations in odroid-config and let me know.
I am using the same monitor and cable right now with the older U2 to post this and it works fine. As I mentioned before, I tried it with several cables and monitors, with the same result.

I will recheck again later in the week when I get time, and let you know. If it is confirmed dead again, I have the contact from you already for raising an RMA.

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Re: HDMI video dead after 4 days

Post by corpsman » Fri May 09, 2014 11:25 pm

So today my brand new Odroid reached, and it shows the same problem (exakt it shows nothing) i am beginning to believe that the problem is not within the odroid. Any ideas what i can test furtermore ?

[Edit]
I got a new info i retried with a µ-SD Card and now the new Odroid works, even with the emmc Card it seems to working. The old odroid is still broken :(

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Re: HDMI video dead after 4 days

Post by mdrjr » Sat May 10, 2014 1:50 am

corpsman wrote:So today my brand new Odroid reached, and it shows the same problem (exakt it shows nothing) i am beginning to believe that the problem is not within the odroid. Any ideas what i can test furtermore ?

[Edit]
I got a new info i retried with a µ-SD Card and now the new Odroid works, even with the emmc Card it seems to working. The old odroid is still broken :(
I think your HDMI is damaged :(

Contact odroid@hardkernel.com with the link of this thread for the RMA :(
Sorry about that.

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Re: HDMI video dead after 4 days

Post by DavidTangye » Mon Jun 16, 2014 6:54 pm

DavidTangye wrote:
mdrjr wrote:Screen flickering normally is either the HDMI cable or your screen.
Let me explain "your screen".
HDMI have an i2s signal that sends Audio for your monitor. Some monitors are dumb enough to takes this audio stream is take it as a video.
That's normal a sign of a monitor that has the HDMI(DVI) input.
Try one of the DVI configurations in odroid-config and let me know.
I am using the same monitor and cable right now with the older U2 to post this and it works fine. As I mentioned before, I tried it with several cables and monitors, with the same result.

I will recheck again later in the week when I get time, and let you know. If it is confirmed dead again, I have the contact from you already for raising an RMA.
I have been busy, using my old UDroid-U2 for the past 2 weeeks, and finally got time to look at this U3 again. I downloaded unpacked, burned and booted 'public-trusty-dev-center-18052014.img'. That software always works on the U2 but almost never on the U3. I swapped in 3 different HDMI cables and 3 different monitors/HDMI TVs, and no combination worked properly. Once I got a red screen with lots of snow on the U3 for a few minutes. It seems like very similar symptoms to what is reported on threads http://forum.odroid.com/viewtopic.php?f=82&t=5165 and http://forum.odroid.com/viewtopic.php?f=82&t=4941. I am wondering if you have a problem with a batch of hardware. I spend over a day trying to get a combination to work before giving up.

Anyway I shall contact about an RMA now.

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Re: HDMI video dead after 4 days

Post by DavidTangye » Mon Sep 08, 2014 9:55 am

I think I have finally worked out what my video problem has been all along.

There is nothing wrong with the U3. I returned it to Hardkernel, who tested it, and it is fine.

The problem is with interference between the HDMI cable and any power cable that touches the HDMI cable. Some HDMI cables are especially susceptible, whereas others, presumably better quality cables with better shielding, are much less affected. I can reproduce the problem consistently now.

Degradation can involve any of -
  • the ODroid (u2 OR u3 at least) not booting into 1920x1080, but 1280x720 instead
  • varying degrees of speckled pixels onscreen, from mild to very severe
  • a blank monitor, eg no signal at all
Many thanks to Hardkernel for testing my U3.
Last edited by DavidTangye on Sat Nov 22, 2014 7:27 pm, edited 3 times in total.

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Re: HDMI video dead after 4 days

Post by DavidTangye » Mon Sep 08, 2014 10:00 am

One more observation. Before rebooting, I tried playing your vid of your ODroid-W. Some of these Youtube clips die when played on the U2. With the U3 the entire screen goes blank for a couple of seconds every 10 or so seconds. Perhaps these issues are related to not having sufficient graphics memory?

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Re: HDMI video dead after 4 days

Post by ISaminov » Mon Sep 08, 2014 4:45 pm

Does that sound worth testing here? If so, is there anywhere I can change any config files? I could do this by mounting the eMMC via the MicroSD adapter into another PC here.

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Re: HDMI video dead after 4 days

Post by mdrjr » Mon Sep 08, 2014 10:09 pm

DavidTangye wrote:One more observation. Before rebooting, I tried playing your vid of your ODroid-W. Some of these Youtube clips die when played on the U2. With the U3 the entire screen goes blank for a couple of seconds every 10 or so seconds. Perhaps these issues are related to not having sufficient graphics memory?
Please run a more up-to-date image

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Re: HDMI video dead after 4 days

Post by DavidTangye » Tue Sep 09, 2014 7:29 am

Today have found that the U3 will not cold-boot 1920x1080. The monitor must be saved to 1280x720 in the utility. 1920x1080 works and it reboots ok, but it will not boot from a cold poweroff.
The U2 does not have this problem.
mdrjr wrote:Please run a more up-to-date image
Current /boot contents:

Code: Select all

root@dt-trusty-u3-1:/boot# ls -l
total 8872
-rwxrwxrwx 1 root root     353 May  4 23:10 boot.scr
-rwxrwxrwx 1 root root     281 May 16 15:34 boot.txt
-rwxrwxrwx 1 root root  101420 Jun 13 01:02 config-3.8.13.23
-rwxrwxrwx 1 root root 2127071 Sep  4 07:56 initrd.img-3.8.13.23
-rwxrwxrwx 1 root root 2194825 Jun 13 01:02 uInitrd
-rwxrwxrwx 1 root root 2194825 Jun 13 01:02 uInitrd-3.8.13.23
-rwxrwxrwx 1 root root 2453112 Jun 11 00:25 zImage
Synaptic shows linux-image-generic-lts-trusty versions as: 3.13.0.45.32 from trusty-updates. Can I just install this using synaptic, or will that break the system?

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Re: HDMI video dead after 4 days

Post by mdrjr » Tue Sep 09, 2014 9:52 am

Interesting because the boot.scr for the 1080p is not there as well the one for 720p :)
So you are pretty much on automatic edid detection..

Can you post the results of dmesg and cat /proc/cmdline
On both cases?

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Re: HDMI video dead after 4 days

Post by DavidTangye » Wed Sep 10, 2014 11:43 am

mdrjr wrote:Interesting because the boot.scr for the 1080p is not there as well the one for 720p :)
So you are pretty much on automatic edid detection..
Yes I noticed that yesterday. I had them in your Xubuntu-based 201305 release, which was based on ubuntu 13.04. I used to run the attached Hdmi from panel .desktop files to switch resolution for the next boot session. However I do not seem to need them with your trusty 14.04 release, as I thought that it is processing edid info OK, at least on the monitors I am using. I just change video resolution in the desktop Preferences -> Monitor Settings, and I assume that it just changes the settings for my desktop session, and does not attempt to change anything in /boot.
mdrjr wrote:Can you post the results of dmesg and cat /proc/cmdline
On both cases?
The attached are for booting with my desktop set to 1280x720. However the warm reboot is starting in 1920x1080 this morning, EXCEPT for the first startup, when I also used a different cable. After a couple of reboots via ssh command off another PC, and changing the cable, it is booting 1920x1080 fine.

I am now thinking that I have a problem in a weak connection in the micro-hdmi port, whereby when the system is cold, and/or a different cable is used the signal is sub-optimal. This can cause 1920x1080 to fail and occasionally all video signal to fail. I tried various cables several weeks ago. One definitely caused consistent failure. One might be working consistently; I need to run it more in the next several days. One works consistently with Raspberry Pi's, and (via different HDMI to micro-HDMI adapters) with the U2, but not with the U3. It is taking quite a while to narrow the problem definitively, but for now, I think I am close to an answer. I just have to fit this in with getting on with 'work', and the U2 and now U3 are essentially working well for that.

I think these micro-hdmi connections are not the way to go. They are too delicate to connect and reconnect repeatedly, and to withstand the video cable moving around at all. The stress in the tiny connection is too much. As soon as I get time, I am going to create a 3D printed adapter to mount the U3 onto the 100mm VESA holes on the back of the monitor, and the adapter will also hold the video (and other) cables (and a USB hub) rigidly in place too. I intend to set up and have connected permanently a micro-HDMI to HDMI adapter. Then I will only connect and disconnect at the full HDMI interface. This should prolong the life of the U3 micro-HDMI connection and therefore the entire HDMI.
Attachments
Hdmi.sh
Simple video resolution switcher with optional reboot, bash script
(175 Bytes) Downloaded 44 times
proc-cmdline-using-edid.txt
/proc/cmdline
(126 Bytes) Downloaded 64 times
dmsg-using-edid.txt
dmsg output
(30.16 KiB) Downloaded 65 times

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Re: HDMI video dead after 4 days

Post by DavidTangye » Sat Sep 20, 2014 10:36 pm

mdrjr wrote:
DavidTangye wrote:One more observation. Before rebooting, I tried playing your vid of your ODroid-W. Some of these Youtube clips die when played on the U2. With the U3 the entire screen goes blank for a couple of seconds every 10 or so seconds. Perhaps these issues are related to not having sufficient graphics memory?
Please run a more up-to-date image
I am now running the latest kernel. The screen goes blank for 3 or 4 seconds every 10 seconds or so, when running some programs, eg the web browser. On return the monitor pops up a box saying "HDMI", as if it has reinitialised. It did this about 10 times in the time I wrote this post. While the monitor is blank (reinitialising?), I can continue to type or move the mouse.

Do you have any idea what might be causing this behaviour?

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Re: HDMI video dead after 4 days

Post by mdrjr » Sun Sep 21, 2014 12:29 pm

This can be 3 issues.

1. Bad HDMI connector on U3.
2. Bad HDMI Cable leading to intermittent HDMI connection detection.
3. Your Monitor/TV has actually an DVI port inside and the HDMI i2s audio signals sent by the board is being taken as video causing the flickering.

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Re: HDMI video dead after 4 days

Post by DavidTangye » Sun Sep 21, 2014 8:41 pm

Well it's a hardware fault somewhere. Its a Rev 0.2 board, with a patch wire soldered from the power input past something to somewhere else. (I would not be surprised if that wire is touching that something it shouldn't.)

Anyway, I have switched the U2 back in just now, and it is working perfectly, so I will stop spending any more time on this U3 and just return it.

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