Go to advanced search

by evizw2
Wed Apr 11, 2018 4:06 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

I'm using the 2.5A from CanaKit that came with the 3B+. So far memtester has been running for just over 2 hours at arm_freq=1350 without a crash.
by evizw2
Wed Apr 11, 2018 2:35 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

I ended up trying arm_freq=1375 overnight, which crashed 15 minutes after I left it. I also tried with just sdram_schmoo=0x01000010 this morning and it only ran for 10 minutes. I'm going to try ratcheting down arm_freq in increments of 25 until I find one where it consistently works.
by evizw2
Tue Apr 10, 2018 8:51 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

With both sdram_freq=450 and sdram_schmoo=0x01000010 it took 11 minutes before my board rebooted while running memtester. Edit: Without sdram_schmoo modification, but with sdram_freq=450 and arm_freq=1200, memtester has been going for two hours now without a reboot. Edit 2: With just arm_freq=1200 i...
by evizw2
Tue Apr 10, 2018 7:44 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

Unfortunately in my case, with sdram_freq=450, memtester 512M crashes in well under an hour.
by evizw2
Tue Apr 10, 2018 2:29 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

I spoke too soon about using just sdram_freq=450 , as it rebooted overnight. Nothing showed up on the serial console indicating a crash. I'll try running with arm_freq=1200 to see if it reboots over the next few days. I suppose this overnight reboot could also be a different problem. I don't mind se...
by evizw2
Mon Apr 09, 2018 9:43 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

This is what that command outputs with sdram_freq=450 in config.txt. If you're looking for the values without anything set I can also get that for you.

Code: Select all

over_voltage_avs=43750
over_voltage_avs_boost=0x249f0
sdram_freq=450
by evizw2
Mon Apr 09, 2018 7:49 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 464
Views: 70427

Re: Raspberry Pi 3 B+ lockups

... If that is stable then you could back off either of the values and repeat, otherwise you could try pushing the over-voltages to 6. I'm seeing similar issues on my 3B+. I'd leave it compiling something and come back to it a while later only to see it had frozen and was unresponsive to keyboard i...

Go to advanced search