startup failure Pine64
#1
I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,
  Reply
#2
(09-03-2018, 02:15 AM)yasser.moj Wrote: I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,

Please make sure your power supply is not under power.
  Reply
#3
(09-05-2018, 11:07 PM)tllim Wrote:
(09-03-2018, 02:15 AM)yasser.moj Wrote: I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,

Please make sure your power supply is not under power.

Thanks for your reply.
Actually, I am sure it is not a power issue. because I tried (5V ,2A ) and (5V,5A) but still sometimes (40%) it doesn't get into system.
check this video please:
https://drive.google.com/open?id=1clDSzg...WLlb3k_YmU
here I am using (5V,5A) power supply!!
  Reply
#4
(09-06-2018, 01:51 AM)yasser.moj Wrote:
(09-05-2018, 11:07 PM)tllim Wrote:
(09-03-2018, 02:15 AM)yasser.moj Wrote: I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,

Please make sure your power supply is not under power.

Thanks for your reply.
Actually, I am sure it is not a power issue. because I tried (5V ,2A ) and (5V,5A) but still sometimes (40%) it doesn't get into system.
check this video please:
https://drive.google.com/open?id=1clDSzg...WLlb3k_YmU
here I am using (5V,5A) power supply!!
Even you uses the 5V 5A power supply, your cable connection seems not able to deliver the 5A current.

Please use multimeter and measure on Pi2 bus "DC in" point to check whether you have 5V supply to your board. If you measure only 4.8V, then please revisit your wiring or use the actual 5V 3A power supply.
  Reply
#5
(09-06-2018, 11:59 PM)tllim Wrote:
(09-06-2018, 01:51 AM)yasser.moj Wrote:
(09-05-2018, 11:07 PM)tllim Wrote:
(09-03-2018, 02:15 AM)yasser.moj Wrote: I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,

Please make sure your power supply is not under power.

Thanks for your reply.
Actually, I am sure it is not a power issue. because I tried (5V ,2A ) and (5V,5A) but still sometimes (40%) it doesn't get into system.
check this video please:
https://drive.google.com/open?id=1clDSzg...WLlb3k_YmU
here I am using (5V,5A) power supply!!
Even you uses the 5V 5A power supply, your cable connection seems not able to deliver the 5A current.

Please use multimeter and measure on Pi2 bus "DC in" point to check whether you have 5V supply to your board. If you measure only 4.8V, then please revisit your wiring or use the actual 5V 3A power supply.

I've checked it. it is regular 5V and the quality of the cable is good it is Samsung-made.
  Reply
#6
(09-09-2018, 04:54 AM)yasser.moj Wrote:
(09-06-2018, 11:59 PM)tllim Wrote:
(09-06-2018, 01:51 AM)yasser.moj Wrote:
(09-05-2018, 11:07 PM)tllim Wrote:
(09-03-2018, 02:15 AM)yasser.moj Wrote: I have PineA64  with Ubuntu image installed on SD card. sometimes it fails to startup and get into OS. the HDMI display recognizes the signal but still shows black screen for a while then back to "NO Signal" message. this happens only on startup.
if I plug out / plug in the power cable again, the system works correctly.
This issue occurs many times.
Any solution for that?
Thx for help,

Please make sure your power supply is not under power.

Thanks for your reply.
Actually, I am sure it is not a power issue. because I tried (5V ,2A ) and (5V,5A) but still sometimes (40%) it doesn't get into system.
check this video please:
https://drive.google.com/open?id=1clDSzg...WLlb3k_YmU
here I am using (5V,5A) power supply!!
Even you uses the 5V 5A power supply, your cable connection seems not able to deliver the 5A current.

Please use multimeter and measure on Pi2 bus "DC in" point to check whether you have 5V supply to your board. If you measure only 4.8V, then please revisit your wiring or use the actual 5V 3A power supply.

I've checked it. it is regular 5V and the quality of the cable is good it is Samsung-made.

If Samsung made, then looks like a mobile phone power supply. Please note that most mobile phone power supply not capable of deliver enough power to SBC, even stated 2A rating. This due to the 2A deliver only when "match" to their own mobile phone. If not match happen, the power supply only deliver 500mA.
  Reply
#7
(09-09-2018, 04:30 PM)tllim Wrote:
(09-09-2018, 04:54 AM)yasser.moj Wrote:
(09-06-2018, 11:59 PM)tllim Wrote:
(09-06-2018, 01:51 AM)yasser.moj Wrote:
(09-05-2018, 11:07 PM)tllim Wrote: Please make sure your power supply is not under power.

Thanks for your reply.
Actually, I am sure it is not a power issue. because I tried (5V ,2A ) and (5V,5A) but still sometimes (40%) it doesn't get into system.
check this video please:
https://drive.google.com/open?id=1clDSzg...WLlb3k_YmU
here I am using (5V,5A) power supply!!
Even you uses the 5V 5A power supply, your cable connection seems not able to deliver the 5A current.

Please use multimeter and measure on Pi2 bus "DC in" point to check whether you have 5V supply to your board. If you measure only 4.8V, then please revisit your wiring or use the actual 5V 3A power supply.

I've checked it. it is regular 5V and the quality of the cable is good it is Samsung-made.

If Samsung made, then looks like a mobile phone power supply. Please note that most mobile phone power supply not capable of deliver enough power to SBC, even stated 2A rating. This due to the 2A deliver only when "match" to their own mobile phone. If not match happen, the power supply only deliver 500mA.

just to clarify ,only the cable is Samsung made, but I have an external power supply 5A , and I measured the voltage on DC input of the board it's stable 5V.

May the issue occurs because the image installed directly on the SD card? what do u think? could it be more stable if I use EMMC?
  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  The Story of Pine64 rbma 2 197 1 hour ago
Last Post: devrtz
  Pine64 Customer Service and Sales Support, or the lack of it... valentin 4 385 07-01-2020, 10:40 AM
Last Post: valentin
  Pine64 IP Cube camera jnobles75 31 5,487 06-29-2020, 02:43 PM
Last Post: Zaf9670
  Pine64 SNES Foxchild 1 227 06-17-2020, 01:15 AM
Last Post: tllim
  Investing in Pine64 tahleel 2 409 06-10-2020, 07:21 AM
Last Post: tophneal
  Cant access pine64 subsites on android butchi91 1 481 05-05-2020, 01:51 PM
Last Post: Danct12
  support.pine64.org is down marty1885 10 768 04-14-2020, 09:18 AM
Last Post: Luke
Star Pine64 Hardware and FSF RYF Certification ant-43 AboutUs 12 1,818 04-04-2020, 12:40 AM
Last Post: OneEyeGringoJoe
  pine64 usb2 emmc reader with odroid module nivex 1 461 03-30-2020, 04:27 PM
Last Post: nivex
  Pine64 on Tapatalk tophneal 8 579 12-16-2019, 10:57 AM
Last Post: e-minguez

Forum Jump:


Users browsing this thread: 1 Guest(s)