RockPro64 has bad Memory (Software sogfaults and kernel panics)
#11
(11-19-2020, 12:27 PM)LMM Wrote:
(11-19-2020, 12:36 AM)wildering Wrote: I cracked open the two other boards and ran memtest on them with no errors reported. I then transplanted that eMMC module onto the date code 5219 board and ran the test again. I was presented with a slew of errors. It's evident that, that ROCKPro64 (v2.1, 2018-07-02 5219) is also defective and will warrant an RMA.

I ran memtest with Debian an it seems ok. (v2.1, 2018-07-02). What is noticeable is the high temperature reached (70°C) in spite of a heatsink. Then I put it over a fan and it dropped below 50°C after 9 min

(11-19-2020, 12:27 PM)LMM Wrote:
(11-19-2020, 12:36 AM)wildering Wrote: I cracked open the two other boards and ran memtest on them with no errors reported. I then transplanted that eMMC module onto the date code 5219 board and ran the test again. I was presented with a slew of errors. It's evident that, that ROCKPro64 (v2.1, 2018-07-02 5219) is also defective and will warrant an RMA.

I ran memtest with Debian an it seems ok. (v2.1, 2018-07-02). What is noticeable is the high temperature reached (70°C) in spite of a heatsink. Then I put it over a fan and it dropped below 50°C after 9 min

I don't know if it is a good practice (and a good idea) but I cut the conductive pad in order to be able to double the layer on the DDR chip to make the contact with the heatsink. Otherwise it probably does not

I don’t see how doubling the conductive pad would hurt, but I imagine conductivity would be impacted. It shouldn’t be necessary though, as I’ve found a single layer makes good contact with the heat sync. Plus in my case I didn’t have the chance to do anything other than run apt update, which shouldn’t cause a temperature spike at all. Plus both other boards run at a cool 45-50 degrees under moderate load with the tall heat sync and no fan. 

The most likely cause of the segmentation faults we’ve been experiencing is defective chips from the manufacturer or them breaking during product assembly.
  Reply


Messages In This Thread
RE: RockPro64 has bad Memory (Software sogfaults and kernel panics) - by wildering - 11-19-2020, 06:53 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  GPIO on the RockPro64 - all pins high? colinmarc 2 202 11-18-2022, 10:20 AM
Last Post: colinmarc
  ROCKPro64 DOA ajtravis 8 3,079 11-08-2022, 03:40 AM
Last Post: ajtravis
  RockPro64 not booting up mvicha@gmail.com 0 315 09-19-2022, 07:35 AM
Last Post: mvicha@gmail.com
  ROCKPro64 with 16 ports SATA controller ZeblodS 18 17,810 09-17-2022, 09:20 PM
Last Post: caroljames972022
  GPIO Expander HAT for ROCKPro64 and Quartz64 CounterPillow 7 2,447 07-18-2022, 10:05 PM
Last Post: zer0sig
  RockPro64 premium aluminium casing justwantin 2 773 05-27-2022, 06:51 PM
Last Post: justwantin
  charging 3 rockpro64 from single source rpt312 1 625 05-16-2022, 02:34 AM
Last Post: dukla2000
  help or suggestions removing RockPro64 Playbox please? jahway603 2 970 03-22-2022, 12:17 PM
Last Post: jahway603
  rockpro64 13 megapixel camera Aycaramba 9 9,334 01-24-2022, 02:47 PM
Last Post: solbs
  RockPro64 doesn't boot when PCIe to M.2 adapter is installed Cerberus 3 1,900 11-27-2021, 11:38 PM
Last Post: Cerberus

Forum Jump:


Users browsing this thread: 1 Guest(s)