Raspberry Pi Forums

MaxK1

What else is connected via USB? The Ralink is showing up as wlan1 so what is wlan0? And why is the device number 38?
Could you post the full (unfiltered!) output from dmesg?

MaxK1

Faster SD card (Samsung Evo+)
Overclock
External HDD or SSD

MaxK1

And where were the Pi's made? Have you made any measurements?

MaxK1

I use heatsinks AND fans. The fan in this pi3 is cooling the heatsink, an HDD and power supply in an old full sized SCSI drive cabinet. Keeps the temp between 37' and 40'C with force_turbo=1 and arm_freq=1350. The heatsinks are scavenged from old laptop power supplies and the fans are from either ol...

MaxK1

I would say you have tried everything. Consider it bored..

MaxK1

Do the wires inside the connector look OK and nothing metallic has worked its way in to short anything? Everything on the underside of the board look OK? no bad solder joints or anything "funny" looking?

MaxK1

hdparm has been around since well before the turn of the century... :) It's a handy tool to know about, but it can be dangerous (and the options that are so considered are flagged as such) Other common uses are: hdparm --direct -Tt /dev/sda for read timing. hdparm -I /dev/sda for drive info (That's ...

MaxK1

The on-board wifi is not a USB device, so lsusb isn't going to show it.

MaxK1

Are you connecting directly to the pi? or through a hub? I suspect some them may be trying to"back-fill" extra current from the host/hub usb port during spinup and they get a bit upset (If connected directly to the Pi, you may even see the dreaded "lightning bolt" if it drops too far)

MaxK1

Sure - I have a bunch of them working with IDE and SATA drives - maybe not the best but they work fine reading AND writing. Where they fall down is when the supposedly 5V supply dips to below 4.75 volts and then go into an endless spinup/reset loop. In fact I have 5 Pi's that are using them for the ...

MaxK1

Try setting spindown time to 0 with hdparm. hdparm -S 0 /dev/sdb (Thats an upper case S) Also, check the +5V going to the HDD when not connected, during spinup and after it has spun up- sometimes the power supplies are sufficiently marginal that they don't deliver enough on +5V line during spinup an...

MaxK1

what does dmesg show? I'm guessing that the drive is spinning down due to inactivity and when it tries spinning back up, you get a USB reset. Can you hear the drive as it spins up?

MaxK1

"a few errors pop up and..."
What errors? Without knowing that, nobody can help you. Obviously, rsync did NOT get installed...

MaxK1

Try config_hdmi_boost=6 or 7 in /boot/config.txt to see if that fixes the lone "bad" one...

MaxK1

I had a similar problem recently - turned out to be the PSU to the drive was only putting out about 4.2 V

MaxK1

Which is why we often ask to have a cut 'n paste of the file...

MaxK1

hdmi_drive=2 and dtparam_audio=on The = sign is important

MaxK1

hdmi_drive=2 and dtparam_audio=on The = sign is important

MaxK1

How much would you have to overclock for you to consider it "worth it"? Don't expect more than about 10% (You may be one of the lucky ones that can push the SoC further, but expect a lot of experimentation and whacked SD cards) Good Luck!

MaxK1

Your PSU is inadequate - The suggested minimum PSU for a Pi2 is 5V/2.4A. That may solve the problem with your screen as well, but if not there is a "stickie" for that as well. If you need to edit the file, you may have to edit it on a Windows machine... I think you need to use notepad (Sorry - It's ...

MaxK1

have you tried config_hdmi_boost=6 or 7 in /boot/config.txt? What PSU's are you using? (V and mA)

MaxK1

Have you gone through the trouble shooting "stickies"? They pretty much have all we know about boot problems and solutions.

MaxK1

I've got all kinds of Pi's around here - some enclosed some are not. I have found that they all benefit from some sort of cooling. The 2 Pi3's are overclocked and they do get very hot without heatsinks and fans. With heatsinks and fans I can usually keep the CPU temp below ~40 degrees C with all cor...

MaxK1

make sure you have "dtparam=audio=on" in the same config.txt
Does your sister work at a strip club?

MaxK1

Good goin'! I would add a bit of heat shrink (If you haven't already) on each pin. As long as you aware that you are by-passing the protection circuitry, by powering through Pins 2 and 6, you should be all set. Doesn't sound like you need to worry about cooling for a while

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