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mahjongg
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Re: under voltage detected

Sun Mar 10, 2019 9:44 pm

ebolisa wrote:
Wed Mar 06, 2019 10:54 am
Will do but I thought to follow through for being the same subject.
True, the rule is one question warrants one subject, and no more than one, this forum with >1356872 (one point three million!) posts is cluttered up enough already.

So duplicates will be deleted without warning, or hesitation.
I will only do a quick judgment with copy can most likely be missed the best , but I'm only human, and unless I doubt my decision enough to move the post to a user unreadable place, (which is taxing the patience of other moderators, so it happens *very* seldom) deleted copies cannot be recovered.

rakurs
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Re: under voltage detected

Fri Aug 09, 2019 10:53 am

I have realy 1 task for my raspberries developments - to show video from digital camera on screen. Nothing more. I have about 20rasps + 20 PSU's.
I dont wanna see on screen this sign "under voltage detected" , turned wifi, bluetooth off. Added string to "config.txt" - yellow build to the right up corner - gone.

How to remove under voltage on screen sign? annoying.
I know, im under voltaged (2100ma) - but thats enough for my tasks, i can even underclock CPU. But i think it wount help with this sign coming to console screen.

how to remove it?
Raspi is custom, thats why im kinda at a loss about "we have no function to remove it, its an smoke detector!" - ok, for everyone its ok. For me - i need this option.

jamesh
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Re: under voltage detected

Fri Aug 09, 2019 11:43 am

Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
“I own the world’s worst thesaurus. Not only is it awful, it’s awful."

rakurs
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Joined: Wed Sep 28, 2016 12:16 pm

Re: under voltage detected

Mon Aug 12, 2019 12:24 pm

avoid_warnings=1
does't remove popup warnings in tty console, only yellow bulb on the right up corner

trejan
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Re: under voltage detected

Mon Aug 12, 2019 12:33 pm

rakurs wrote:
Mon Aug 12, 2019 12:24 pm
does't remove popup warnings in tty console, only yellow bulb on the right up corner
Create a file called /etc/modprobe.d/raspberrypi_hwmon.conf with "blacklist raspberrypi_hwmon" inside and it won't load the kernel module that monitors for undervoltage.

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Imperf3kt
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Re: under voltage detected

Mon Aug 12, 2019 10:11 pm

rakurs wrote:
Fri Aug 09, 2019 10:53 am
How to remove under voltage on screen sign? annoying.
The proper and recommended solution is to get a better power supply. (and sometimes the cable between power supply and Pi)

Don't just sweep the dirt under the rug - just because you can't see it doesn't mean it isn't there and isn't a problem.
55:55:44:44:4C
52:4C:52:42:41

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HawaiianPi
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Re: under voltage detected

Mon Aug 12, 2019 10:23 pm

Imperf3kt wrote:
Mon Aug 12, 2019 10:11 pm
The proper and recommended solution is to get a better power supply. (and sometimes the cable between power supply and Pi)
Or use a Pi computer with lower power requirements.

rakurs wrote:
Fri Aug 09, 2019 10:53 am
... turned wifi, bluetooth off..
Why not use a Pi2 (or perhaps a Pi Zero) instead?
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

rakurs
Posts: 14
Joined: Wed Sep 28, 2016 12:16 pm

Re: under voltage detected

Thu Aug 22, 2019 10:56 am

trejan wrote:
Mon Aug 12, 2019 12:33 pm
rakurs wrote:
Mon Aug 12, 2019 12:24 pm
does't remove popup warnings in tty console, only yellow bulb on the right up corner
Create a file called /etc/modprobe.d/raspberrypi_hwmon.conf with "blacklist raspberrypi_hwmon" inside and it won't load the kernel module that monitors for undervoltage.
THANX ! a lot !

Changing to other computer is't an option when you already have 20pcs.
I made downclock.

calebobc
Posts: 1
Joined: Sun Mar 01, 2020 1:02 am

Re: under voltage detected [solved]

Sun Mar 01, 2020 1:08 am

I measured the power voltage on the raspberry pi 3b and it was 4.8, as my source is adjustable I went up to 5.1 and the low voltage message disappeared.

[email protected]:~ $ dmesg
...
03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
[ 9.448152] uart-pl011 3f201000.serial: no DMA platform data
[ 9.751957] Under-voltage detected! (0x00050005)
[ 10.479206] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
...[ 16.853193] Bluetooth: RFCOMM TTY layer initialized
[ 16.853221] Bluetooth: RFCOMM socket layer initialized
[ 16.853258] Bluetooth: RFCOMM ver 1.11
[270507.133955] Voltage normalised (0x00000000)
[270511.293985] Under-voltage detected! (0x00050005)
[270515.454004] Voltage normalised (0x00000000)
[270519.624004] Under-voltage detected! (0x00050005)
[270527.934036] Voltage normalised (0x00000000)

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