Develop Bugs

Big Problem. Buttons don't work!

Dear,
Yesterday, suddenly, the buttons on the "front" of the phone (mail, Internet, OK, D-Pad, etc) stop working "sometimes" (50~60% percent, maybe). I thought about ROM problem but I flashed twice with other ROMs and the problem persists.
I thought also a hardware problem, but it's quite strange, because it's not one or two buttons, it's all front buttons (also, buttons on the side seems that work always).
Any idea?
Thanks
Sesaru

I experienced this also on one hermes. This problem was already decribed on this forum (do a search) and seemed caused by a connector between the board containing the button's electronic and a flat cable. Some people solved the problem by disassembling their hermes and by putting some piece of foam behind the connector. On my hermes, it was not that issue. It was in fact the board itself where humidity caused the destruction of some wiring. By pressing on the board, the hermes was again functionning for a moment and then, same problem again. This was also accompaigned by the "white screen" effect. But not always. Another symptom was a row of some pixels on the top of the screen reproducing the bottom of the same screen. Only solution: replace the board.
In my opinion, it is well a hardware problem.
Hope this helps

I have the same problem, along with the white screen of death.
Check the link at the bottom of this thread: http://forum.xda-developers.com/showthread.php?t=394830

I'll check. Thank you very much!!!
Cesar

sesaru said:
Dear,
Yesterday, suddenly, the buttons on the "front" of the phone (mail, Internet, OK, D-Pad, etc) stop working "sometimes" (50~60% percent, maybe). I thought about ROM problem but I flashed twice with other ROMs and the problem persists.
I thought also a hardware problem, but it's quite strange, because it's not one or two buttons, it's all front buttons (also, buttons on the side seems that work always).
Any idea?
Thanks
Sesaru
Click to expand...
Click to collapse
Did you happen to just flash a new rom and the problem started??

tytnguy said:
Did you happen to just flash a new rom and the problem started??
Click to expand...
Click to collapse
No, it happened suddenly. I flashed after that, thinking in a ROM problem.
Anyway, I think I could fix it. I just slide the keyboard, and (sorry for my English, I'm not sure how to do say this) 'tighten the two smalls screws" on the back of the screen (the were a bit detached). After that, it seems that it works fine
Thanks!
Sesaru

sesaru said:
No, it happened suddenly. I flashed after that, thinking in a ROM problem.
Anyway, I think I could fix it. I just slide the keyboard, and (sorry for my English, I'm not sure how to do say this) 'tighten the two smalls screws" on the back of the screen (the were a bit detached). After that, it seems that it works fine
Thanks!
Sesaru
Click to expand...
Click to collapse
Glad that worked!
I had a similar issue with one of the new rom i installed and later installing some other roms(couple of times though) fixed the issue. I still do not kn ow what was the real problem

Tightening the screws will work for a little while, but you are likely to see the problems return, and eventually the WSOD errors. Exact same thing has happened to many users. I recommend reading through the threads on it. There are few solutions that involve opening the thing right up (just so your prepared if it happens, which fingers crossed it wont).

xternal said:
Tightening the screws will work for a little while, but you are likely to see the problems return, and eventually the WSOD errors. Exact same thing has happened to many users. I recommend reading through the threads on it. There are few solutions that involve opening the thing right up (just so your prepared if it happens, which fingers crossed it wont).
Click to expand...
Click to collapse
Do y mean this one?
http://forum.xda-developers.com/showthread.php?t=394830
Or other ones?

Notification Bar Stuck - only can pull down in landscape

hi. i would appreciate some help.
I am using a Desire HD w/ Lord's Icecoldsandwhich 8.6.1.
The notification bar has recently become stuck while in portrait mode. This happened about a day after doing a full wipe and flash of ics8.6.1.
I have tried full wipe/ factory reset, randomblain's Jellytime r5.1, exists aospx...the problem has continued. I have set the phone to show visual response to touch and there is no response in the area of the notification bar; however the rest of the screen/ buttons function perfectly.
If you can offer any help, it would be much appreciated. Thankyou.
- m
p.s. I've searched the forums and I could only find a similar issue posted about an EVO 4G user, however there was no conclusive help, only the suggestion to get the phone replaced.

it is possible to be a kernel problem? i have tried reflashing just the kernel, but no improvement so far.
any assistance is much appreciated. sorry for my english.
1mystics said:
hi. i would appreciate some help.
I am using a Desire HD w/ Lord's Icecoldsandwhich 8.6.1.
The notification bar has recently become stuck while in portrait mode. This happened about a day after doing a full wipe and flash of ics8.6.1.
I have tried full wipe/ factory reset, randomblain's Jellytime r5.1, exists aospx...the problem has continued. I have set the phone to show visual response to touch and there is no response in the area of the notification bar; however the rest of the screen/ buttons function perfectly.
If you can offer any help, it would be much appreciated. Thankyou.
- m
p.s. I've searched the forums and I could only find a similar issue posted about an EVO 4G user, however there was no conclusive help, only the suggestion to get the phone replaced.
Click to expand...
Click to collapse

1mystics said:
it is possible to be a kernel problem? i have tried reflashing just the kernel, but no improvement so far.
any assistance is much appreciated. sorry for my english.
Click to expand...
Click to collapse
Just out of curiosity, are you using a Sense 4 theme from the market?

Hi. Thank you for your reply.
No, I always use the default theme that comes with the ROM. I also use the default launcher or Nova if available that comes with the Rom. No additional widgets or extras as well.
bananagranola said:
Just out of curiosity, are you using a Sense 4 theme from the market?
Click to expand...
Click to collapse

Might be a bad flash, I haven't heard of others that had it (as in, your's might be unique).
Here's a somewhat unlikely scenario, but go to developer options>show touches. Then tap the notification bar. If you don't see a touch up there, then it might be another issue altogether.

xxkid123 said:
Might be a bad flash, I haven't heard of others that had it (as in, your's might be unique).
Here's a somewhat unlikely scenario, but go to developer options>show touches. Then tap the notification bar. If you don't see a touch up there, then it might be another issue altogether.
Click to expand...
Click to collapse
As I mentioned in the OP i enabled visual touch response and there was no response from the notification area. If I turn the phone on its side and enable landscape mode, the "portrait notification area" which becomes the left side of the screen still gives no response.
I understand this lends strongly to the idea that the phone is damaged, however I came across a post written by an Evo 4G user with a similar issue, except he was able to solve the problem by re-flashing an updated kernel. Unfortunately, I have tried this with no results.
Thank you for your reply ...it seems that this problem is uncommon and I am begin to doubt the availability of a software/firmware based solution.

Screen Problems

I just had my screen glass only replaced after dropping and cracking.the screen.
The problem I am having is there is one area of the screen that does not function intermittently. It works fine appox 60-70% of the time - others it does not. The area is in the location where the "T" is located in the default Samsung keyboard.
This happens with the stock firmware as well as a couple of custom roms.
I am not an expert by any means but I thought this is a software/calibration problem.
Anyone have and ideas?
Thanks very much!

tgatlinjr said:
I just had my screen glass only replaced after dropping and cracking.the screen.
The problem I am having is there is one area of the screen that does not function intermittently. It works fine appox 60-70% of the time - others it does not. The area is in the location where the "T" is located in the default Samsung keyboard.
This happens with the stock firmware as well as a couple of custom roms.
I am not an expert by any means but I thought this is a software/calibration problem.
Anyone have and ideas?
Thanks very much!
Click to expand...
Click to collapse
I hope your warranty is still active, it looks like it's a defective lcd/screen with
intermittent pixels if this problem appears on all screens not just the keyboard.
If it's only the keyboard, re-download the stock official Odin flash S4 firmware
from SamMobile.com and flash it using Odin.
Good luck!

Has anyone seen this issue with Steering Wheel app/settings?

My Steering wheel app is blank - no buttons, so I can't remap anything.
https://goo.gl/photos/H6Q8Lb8Z3E5GK2ia9
If so, does anything know how to fix the issue?
Xtrons support is crap. I would not buy anything from them. Their only suggestion is for me to return or refund it, when I keep telling them it's software issue and to actually look at another unit.

You will press the button it will appear on the screen then you choose the action
Sent from my SM-N920C using Tapatalk

elhamy said:
You will press the button it will appear on the screen then you choose the action
Sent from my SM-N920C using Tapatalk
Click to expand...
Click to collapse
4 of the 6 buttons on my steering wheel do things, but there are no buttons there to begin with, like shown here: http://kepfeltoltes.hu/141121/20141119_152125a_www.kepfeltoltes.hu_.jpg
When I press any of the buttons nothing happens in the steering wheel app. No buttons appear. If the button already does something, it just does it, instead of interacting with the app. The buttons that don't do anything, continue to not do anything. So basically the app isn't communicating with canbus adapter, but canbus adapter is working, since some buttons do stuff.

In your first picture the android version is 5.1.1 in normal cases when you press on your SWC they should appear and you will be able to link to an action
So if that is not happening with you I confirm that you have a problem and most probably a software problem so I suggest resetting the device to factory default and trying again
In the 2nd picture android version is 4.. which is a bit different in setting it up
Sent from my SM-N920C using Tapatalk

elhamy said:
In your first picture the android version is 5.1.1 in normal cases when you press on your SWC they should appear and you will be able to link to an action
So if that is not happening with you I confirm that you have a problem and most probably a software problem so I suggest resetting the device to factory default and trying again
In the 2nd picture android version is 4.. which is a bit different in setting it up
Sent from my SM-N920C using Tapatalk
Click to expand...
Click to collapse
Thanks for the suggestions. I've already tried to factory reset, but ended with the same results. My next attempt to fix it will be flashing stock factory rom... but my sdcard ejected and shot out and got lost between seat and center console. So waiting for new micro sd card.

same issue, on mi pumpkin unit.
I agree with you, the support is really crap 8 emails and nothing ...just ¨send it back¨
Don't buy Xtrons Units !

Eanon seems to have good support. They helped even though I didn't buy it from them. In any case, I had to press the swc first, then select which action I wanted it to take on screen.
Sent from my SM-N900T using Tapatalk

Honest question: Did you confirm that your SWC wires are properly connected?

My fix for SWC
I had the exact same problem with my
Joying . SKU: JY-UL124 . From China Warehouse
. Quad Core Android 5.1.1 Lollipop OS Capacitive 7" High Definition for Universal Double Din . CPU: RK3188 1.6GHz Cortex A9 Quad Core, Resolution 1024*600
. RAM：DDR3 1G, 16 GB memory
I fixed it by connecting a earth or ground to one (either) of the SWC control wires from the car.
The car's original wiring only had a "ladder" resistance network between the two SWC wires and had no earth. This works ok for OEM but the MTCB type head needed one of the wires to have an earth connection. The moment I connected the earth the missing SWC icons populated the screen and the setup was easy from then.
Hope that helps,
Duke

You guys need to post this in the MTCD thread and not the MTCB. Some or all of you have the 5.1.1 units which have different core boards (MTCD). The moderator of Android Auto thread has been pressing the issue of posting to the correct thread. The units may look the same but the software and hardware are different than that of the MTCB units.

Hi guys i would ask your help. I have an Alfa Romeo Giulietta, Installed in the dash a nexus 7 2013 and I want use the steering wheel buttons. The car use the protocol is 15765-4 29bit and I have on Bluetooth obd reader. Can you please help me out? Thanks in advance.
Inviato dal mio FRD-L09 utilizzando Tapatalk

Steering Wheel control app.
I realise that this is a 4 year old thread but did you solve your problem?
Did you set the canbus protocol in Settings/Car/Canbus to your specific car?
I'm having the same problem that my steering wheel app is blank!
Cheers
Onslow in the UK

Flickering display from Dasaita Max10 PX6 4gb/64gb - Android 10

Hi all, I installed this new Max10 unit from Daisata and when brightness is set to full the display starts to flicker on and off. Turning down brightness to like 90% solved the issue. Anyone else experiencing this with their unit?

Did you find any other related posts. What options have been considered and as always, what does seller suggest.

marchnz said:
Did you find any other related posts. What options have been considered and as always, what does seller suggest.
Click to expand...
Click to collapse
No I did not find any posts with the same issue and have requested reseller to share me their results yet no reply back yet. I was just wondering if this was new issue since these android 10 models of the Dasaita PX6 unit were released in June.

Short update, vendor had send me an updated MTCE (3.60) which I installed but did not yet resolve the flickering and made it worse as my display of the MAX10 (1280 x 720) is now cropped to 1024 * 720
They are now checking what could have caused this....anyone has any idea?

WildestNL said:
Short update, vendor had send me an updated MTCE (3.60) which I installed but did not yet resolve the flickering and made it worse as my display of the MAX10 (1280 x 720) is now cropped to 1024 * 720
They are now checking what could have caused this....anyone has any idea?
Click to expand...
Click to collapse
Exported MCU config file and applied after update ?

No did not export any config file

Pls send HA mcu 3.60
THX

emre33 said:
Pls send HA mcu 3.60
THX
Click to expand...
Click to collapse
It was just posted on https://forum.xda-developers.com/android-auto/mtcd-android-head-units-general/dasaita-mcu-updates-rockchip-px5-octa-t3575155

same unit where is update
Hi all, I installed this new Max10 unit from Daisata and when brightness is set to full the display starts to flicker on and off. Turning down brightness to like 90% solved the issue. Anyone else experiencing this with their unit?
i have the same unit im tryin to find the firmware/software update. You have the location?

Brown Notes said:
Hi all, I installed this new Max10 unit from Daisata and when brightness is set to full the display starts to flicker on and off. Turning down brightness to like 90% solved the issue. Anyone else experiencing this with their unit?
i have the same unit im tryin to find the firmware/software update. You have the location?
Click to expand...
Click to collapse
It can be found here: https://forum.xda-developers.com/android-auto/mtcd-android-head-units-general/dasaita-mcu-updates-rockchip-px5-octa-t3575155
Could you please let me know if you also have the flickering at full brightness?

Brown Notes said:
Hi all, I installed this new Max10 unit from Daisata and when brightness is set to full the display starts to flicker on and off. Turning down brightness to like 90% solved the issue. Anyone else experiencing this with their unit?
i have the same unit im tryin to find the firmware/software update. You have the location?
Click to expand...
Click to collapse
I had this issue with my Dasaita PX5 unit (2016 Corolla) on stock ROM intermittently awhile back. Not present with Hal9k's custom ROM.
Same resolution: dropping down the brightness ever so slightly would eradicate the flickering.

Px3 kld, some flicker when i have less of 60% brightness

HA mcu 3.60
marchnz said:
Exported MCU config file and applied after update ?
Click to expand...
Click to collapse
Can you please send HA mcu 3.60 to me.
Thank you

+1 This and also anyone else?
Wanted to chime in since this was not a thread before I had this issue but just got my unit replaced by Dasaita with this exact issue and "fix" making screen resolution cropped. Eventually, they had me send it in and sent me a new one. So far no screen flickering but I just got it today.
On a side note, anyone have it for the RAV4 or any other toyota and incorporates a canbus decoder? I am having an issue that my HU is causing the check engine light to come on and traction control to turn off. They told me its due to not disconnecting the battery when I first installed it, this happened with the last unit, but I did that this time and still same result. Anyone else experiencing this? Their support is not the most helpful and I am about to return if fully but I love the look of the 10" screen in the car

Hi everyone, I have had the same problem but even worst since my unit's screen is not only flickering but also out-of-fit (the status bar is now at appear at the bottom). Anyone have these problem? Mine came with Android 10 from the box with MTCE (3.71_1) and 20210111 version which I think are the newest, so I do not think I need to update the MCU Please see attached pictures for details.
Dasaita PX6 MAX10 flickering and not fit (video)

Hi, I have also some video issues after 1-2 hour run. Overheating? Maybe some suggestions? I am already wrote to dasaita, but nice to have community opinions.