Odroid C2 hangs booting

sebastianrds
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Re: Odroid C2 hangs booting

Post by sebastianrds »

Hi guys again!

We continue with the touchscreen issue. We tested with the image generated by codewalker but problem stays here, so we return to the current OS release.

In two of the equipments that fails (normally 1 time every 4 boots), we see that the dmesg show the message:

Code: Select all

[   12.557652@0] dwav_usb_mt 2-1:1.0: dwav_usb_mt_packet_validates - error!
[   12.558709@0] dwav_usb_mt 2-1:1.0: packet : aa 01 0f ff f2 59 bb 1f f2 59 0f ff f2 59 0f ff f2 59 0f ff f2 59 0f ff cc e8
We think something occurs sporadically during the boots with the touchscreen driver. Can you suggest one solution to avoid this issue? What means "dwav_usb_mt_packet_validates - error!"?

We attach the dmesg file and the logcat. Please check.

We need a final solution to the situation.

Best regards,

Sebastián

PD: As the Odroid-C2 will be discontinued, it is possible that the source code of the Android OS for these boards will be suministrated to been maintened by us, or you will maintain it for a long time? What will be the HardKernel policy for the Odroid C2 operating system?
Attachments
equipo_con_error_logcat.txt
LOGCAT
(456.03 KiB) Downloaded 20 times
equipo_con_error_dmesg.txt
DMESG
(58.43 KiB) Downloaded 21 times

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Re: Odroid C2 hangs booting

Post by odroid »

Long time no see.
How did you connect power sources to the C2 board and the Vu7A+?
Did you use two separated power supply?
We need that information to reproduce the issue.

BTW, we will probably keep supporting the C2 OS several months more.

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Re: Odroid C2 hangs booting

Post by sebastianrds »

Hi, thanks for the answer!

We are using the same power supply for the Odroid-C2 and for the Display Module, but we use an intermediary board between the Odroid-C2 and the display module. See the diagram below:

Image

The power On sequence is:

1) Power On ODROID-C2 board, keeping control signal Off for Display Module. [Turn On 5V/3A power supply]
2) After 10 seconds, turn on Display Module (turning On control signal).

The power Off sequence is:

1) Perform power Off command.
2) After 4 seconds of performed power Off command, turn Off Display Module (turning Off control signal).
3) After 10 seconds of performed power Off command, power Off ODROID-C2 board. [Turn Off 5V/3A power supply]

We keep waiting your news.

Best regards,

Sebastián

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Re: Odroid C2 hangs booting

Post by odroid »

Thank you for the diagram.
If the power supply board generates 5.0 Volt stable source, there shouldn't be no problem of power stability.

But, we could reproduce the issue when there is a very short(~10msec) period of voltage drop(~4.5Volt) on the display module power rail, the touchscreen didn't work with "dwav_usb_mt_packet_validates - error!" message.
If you don't mind, send us a sample of your power supply board to reproduce the issue. We will measure the voltage transient with some equipment.

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Re: Odroid C2 hangs booting

Post by sebastianrds »

Thanks for your response.

The power supply generates a super stable 5V (3A) source, we will measure today again to re-check. On the other hand, how can the software (Android) realize that the touch does not work, if we don´t receive the "dwav_usb_mt_packet_validates - error!"?

Best regards,

Sebastián
Last edited by sebastianrds on Mon Mar 15, 2021 10:03 pm, edited 1 time in total.

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Re: Odroid C2 hangs booting

Post by odroid »

Unfortunately, there is no firm way to realize from software whether the touch works or not.
It seems to be a main reason why we can't make a smarter solution.
The 'packet_validates - error' kernel message appears randomly regardless of the touch screen functionality.

When you measure the voltage stability, you probably need to set a trigger voltage at 4.6Volt with falling edge on the oscilloscope.

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Re: Odroid C2 hangs booting

Post by aric1979 »

Ok mine hangs booting on an update or from trying to install the google play store per odroid instructions. I have a VU8 installed and I am using a 64gb scandisc sd. Also tried a 32 gb card just to see. I did have to manually change the video mode in the boot.ini to get the display working. The out of the box build works great 👍 but when I try and install google play it hangs on the reboot right when it should display the first bit of video. I know that sounds crazy to know when it hangs but I can see it lock up in the screen. It flash’s.

Thank you for your time I love my odroids

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Re: Odroid C2 hangs booting

Post by aric1979 »

After 2 hours I unplugged and replugged the power supply and it boots without having installed the update. The file is still zipped in the download folder. I tried to update again and the same problem.

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Re: Odroid C2 hangs booting

Post by aric1979 »

Anyone have any ideas???

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Re: Odroid C2 hangs booting

Post by odroid »

We've used only eMMC modules.
Did you install Pico package on Android 6 image?
https://wiki.odroid.com/odroid-c2/getti ... stallation

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Re: Odroid C2 hangs booting

Post by aric1979 »

I have tried but does the same as any update. Do you think it’s because it’s an SD card?

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Re: Odroid C2 hangs booting

Post by aric1979 »

I can try an 8gb emmc. That’s all I have is why I wanted to use SD. Will the OS fit onto an 8gb emmc?

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Re: Odroid C2 hangs booting

Post by odroid »

UHS-1 grade micro-SD card should work even it is pretty much slower than eMMC.
We will try reproducing the issue in the middle of next week since it is Friday evening here Korea and Monday is our national holiday.

Just try that 8GB eMMC which can store Android image and google play.
But, there might be no space to install any apps probably though.

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Re: Odroid C2 hangs booting

Post by aric1979 »

I really appreciate you trying to reproduce the problem. The SD card is UHS-1.

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Re: Odroid C2 hangs booting

Post by odroid »

Have you tried your 8GB eMMC?

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Re: Odroid C2 hangs booting

Post by aric1979 »

Yes same problem. I also tried 2 more so cards. I did find out that it will not even let me side load apps on the SD or EMMC

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Re: Odroid C2 hangs booting

Post by odroid »

I see.
We will try to reproduce the issue today or tomorrow.
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Re: Odroid C2 hangs booting

Post by aric1979 »

Thanks

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Re: Odroid C2 hangs booting

Post by codewalker »

I've just installed selfinstall-odroidc2-eng-s905_6.0.1_master-141-v6.0.img and open_gapps-arm-6.0-pico-20211012.zip.
But Android booted and youtube works fine.
Did you install 32-bit Open Gapps platform?

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Re: Odroid C2 hangs booting

Post by aric1979 »

I am not sure about 32 bit. I thought this was a 64 bit board. Did you try the update on the odroid app?

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Re: Odroid C2 hangs booting

Post by aric1979 »

Android boots the first time and works great. It’s only when I try and update or add google play. It hangs on the restart right when it should show video.

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Re: Odroid C2 hangs booting

Post by aric1979 »

open_gapps-arm-6.0-pico-20211012.zip.
I checked this is what I tried. Do you use the VU8? It all works good until I try and update it.

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Re: Odroid C2 hangs booting

Post by codewalker »

Yes, I have the VU8C. I've updated the latest android version and Play Store.
It works fine.
20211013_173203.jpg
20211013_173203.jpg (649.5 KiB) Viewed 103 times

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Re: Odroid C2 hangs booting

Post by codewalker »

You must install a 32-bit platform Open Gapps, because C2 has no 64bit Android.

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Re: Odroid C2 hangs booting

Post by aric1979 »

I used the smash TV build and everything works perfectly. I tried your recommendation it wouldn’t work I have no idea why. Smash tv everything works first try after changing boot.ini. If anyone else has a problem give SmashTV a try. It worked for me.
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