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Allwinner H6 Orange Pi 3 kernel 5.88.190604 still crashing

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Ubuntu Bionic, crash on linux-image-dev-sunxi64 5.88.190602, 5.88.190603 and 5.88.190604 (all kernel 5.1.6?)

Last worked was 5.88.190601 (kernel 5.1.5)


Debug log before crashing (full log in attachment):

[  OK  ] Reached target Network (Pre).                                          
         Starting pNFS block layout mapping daemon...                           
         Starting Create Static Device Nodes in /dev...                         
         Starting Apply Kernel Variables...                                     
         Mounting Kernel Configuration File System...                           
[  OK  ] Started pNFS block layout mapping daemon.                              
[  OK  ] Started Create Static Device Nodes in /dev.                            
[  OK  ] Started udev Coldplug all Devices.                                     
[  OK  ] Started Apply Kernel Variables.                                        
[  OK  ] Mounted Kernel Configuration File System.                              
         Starting udev Kernel Device Manager...                                 
[  OK  ] Started Monitoring of LVM2 mirrors,�…sing dmeventd or progress pollin .
[  OK  ] Reached target Local File Systems (Pre).                               
[  OK  ] Started udev Kernel Device Manager.                                    
[   10.523607] Unable to handle kernel paging request at virtual address ffff00c



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Allwinner H6 Orange Pi 3 kernel 5.88.190609 (5.1.7).

Booting OK, but there is stability problem: 4 crashes in 2 hours after change to new kernel.



root@OrangePi:~# date
Mon Jun 10 13:49:33 CEST 2019
root@OrangePi:~# grep -a "Startup finished in" /var/log/syslog |grep kernel
Jun 10 11:50:28 OrangePi systemd[1]: Startup finished in 11.725s (kernel) + 14.851s (userspace) = 26.576s.
Jun 10 12:01:06 OrangePi systemd[1]: Startup finished in 11.447s (kernel) + 11.827s (userspace) = 23.275s.
Jun 10 12:15:41 OrangePi systemd[1]: Startup finished in 11.280s (kernel) + 11.967s (userspace) = 23.248s.
Jun 10 12:21:17 OrangePi systemd[1]: Startup finished in 12.093s (kernel) + 11.463s (userspace) = 23.556s.

#some early message in logs when kernel booting

root@OrangePi:~# grep -a "Current system time" /var/log/syslog
Jun 10 11:49:43 OrangePi fake-hwclock[447]: Current system time: 2019-06-10 09:49:35
Jun 10 11:50:24 OrangePi fake-hwclock[424]: Current system time: 2019-06-10 09:50:15
Jun 10 12:01:04 OrangePi fake-hwclock[431]: Current system time: 2019-06-10 10:00:56
Jun 10 12:15:39 OrangePi fake-hwclock[428]: Current system time: 2019-06-10 10:15:30
Jun 10 12:21:16 OrangePi fake-hwclock[425]: Current system time: 2019-06-10 10:21:07


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We know its better but not alright. But it is impossible(simply too expensive) to communicate this rapidly changing information, especially not one2one or in private (yes, many people sends me this repeated known info on the email/private comm) on daily base to users. When things become stable under our standards image is labelled "supported" (https://docs.armbian.com/#what-is-supported) and then we are happy for users input ... while now there are far too many known troubles that we can handle.

If you can contribute in finding the perfect values to make this board stable or help in current project problems, you are more then welcome.


Edit: you need to make 3 more (valuable) contributions, before getting write access here. We had to make a limit to development parts of the forum because pointless and repeating questions from newbies are piling up.

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Igor, I want help with testing correct values of voltage. Give me more info, please. Is there way to change these values online (in /proc or /sys keys)?

Is there more info about voltage than https://github.com/armbian/build/pull/1407? And what purpose is with changing (lowering?) these values?

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