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Dell T20 doesn't stay shut off, auto restart after shut down
Hello,
what might be the reason?
If I do shut down the system regardless in the WebUI or with the power button:
the shutdown will be done, NIC LEDs go off briefly, be turned on after 1 second and the T20 will boot again.
The only time I managed it to stay shut down was to disconnect the power cable and re-attach it. (UEFI after power loss = stay off)
TrueNAS-SCALE-22.12.1 installed on SATA SSD
Power and LAN cable connected to T20, nothing else
SATA HDD for storage
UEFI Version A20
Disable Deep Sleep
Enable Wake On LAN
flash_dell
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May 24th, 2023 19:00
Hello @DELL-Joey C and @DELL-Chris H
I have found the solution about Wake On LAN (WOL) for TrueNAS Scale (Linux based):
German:
https://www.computerbase.de/forum/threads/proxmox-rechner-startet-permanent-nach-dem-herunterfahren.1924656/
GRUB_CMDLINE_LINUX_DEFAULT="xhci_hcd.quirks=270336"
https://www.truenas.com/community/threads/kernel-boot-parameter-how-to-add-to-tn-scale.110109/
It works, now the Dell T20 is standing down, no auto start.
DELL-Joey C
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May 17th, 2023 18:00
Hi @flash_dell,
There are no other hardware installed, just a SATA SSD and the LAN cable connected to the mainboard NIC port or a PCIe NIC card?
Have you tried another known good power cable?
Try removing the drive and the network cable, boot into BIOS and press the power button to shut it down.
Have you tried checking the cables from the power supply to the mainboard? Try reseating them.
I'm unsure if this will affect your OS/Data, have you tried resetting the BIOS to default?
flash_dell
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May 17th, 2023 21:00
Hi @DELL-Joey C
thank you for your reply,
There are no other hardware installed, just a SATA SSD and the LAN cable connected to the mainboard NIC port or a PCIe NIC card?
> The SATA SSD is for the OS, I have later tried with an additional SATA HDD for data. I have also tried with disconnected LAN cable, so only the power cable was attached, nothing else. - same result - only onboard NIC, no plugin LAN card from the start.
Have you tried another known good power cable?
> I will try
Try removing the drive and the network cable, boot into BIOS and press the power button to shut it down.
> I will try
Have you tried checking the cables from the power supply to the mainboard? Try reseating them.
> I will try
I'm unsure if this will affect your OS/Data, have you tried resetting the BIOS to default?
> I have done that, same result
I forgot to mention:
The power cable is connected to a power meter, which is plugged into the walls power plug. I will remove the power meter.
DELL-Joey C
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May 17th, 2023 23:00
Hi @flash_dell,
Thanks for the feedback. Let us know the outcome after the troubleshooting.
T20 is relatively a simple server configuration. Try turning on n off the server without the hard drive (OS). If you have already done BIOS reset, then we'll skip BIOS Power configuration.
flash_dell
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May 18th, 2023 00:00
Hi @DELL-Joey C
the T20 stays shut off after I have removed the power cable; BIOS AC Power loss is set to stay off.
It only does not stay off / will auto start after a shutdown after booting into TrueNAS.
Have you tried another known good power cable?
> no luck
Have you tried checking the cables from the power supply to the mainboard? Try reseating them.
> no luck
DELL-Joey C
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May 18th, 2023 02:00
Hi @flash_dell,
Do try without connecting to the hard drive. If this step doesn't rectify the root cause, I'm afraid you may have to do hardware replacement, starting with the power supply.
flash_dell
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May 18th, 2023 07:00
Hi @DELL-Joey C
I got it to work !
Thank you for hinting into the right directions.
extensive log:
removed 1 stick of 3rd party RAM (8)
only the 4 GByte Dell ECC memory is connected
unplug all 4 SATA cables from mainboard
connect USB Keyboard and Mouse via USB Switch on backside usb port
connect Display Port onboard
chassis case open
unplug from mainboard the yello-black colored SATA power cable
BIOS - press Power button - stays shut off / down, no auto start
---
add 1 stick of 3rd party RAM (8)
success - systems is shutdown, no auto restart
---
plug in to mainboard the yello-black colored SATA power cable
plug in to SATA 2 the OS SSD + power
all other SATA mainboard ports are unplugged
success - systems is shutdown, no auto restart
---
close chassis case
plug in onboard nic cable
disconnect usb
disconnect Display Port
plug in to SATA 1 (black connector mainboard) the data HDD + HDD power 7 cable
fail - systems is shutdown, does auto restart
---
open chassis case
power button
(keep plug in to SATA 1 the data HDD + HDD power 7 cable)
fail - systems is shutdown, does auto restart
---
unplug both SATA 1 the data HDD + HDD power 7 cable
fail - systems is shutdown, does auto restart
---
unplug LAN cable - only power cable is plugged in + SATA SSD OS
fail - systems is shutdown, does auto restart
---
unplug from mainboard the yello-black colored SATA power cable
unplug SATA 2 cable - all 4 SATA cables from mainboard are unplugged
success - systems is shutdown, no auto restart
---
plug in to mainboard the yello-black colored SATA power cable
plug in to SATA 2 the OS SSD + power
all other SATA mainboard ports are unplugged
fail - systems is shutdown, does auto restart
----
connect Display Port onboard
no LAN cable
connect USB Keyboard and Mouse via USB Switch on backside usb port
fail - systems is shutdown, does auto restart
---
(sleep button on keyboard does kind of suspend, cpu and chassis fan keep on running)
enter BIOS via F2 - Power button
success - systems is shutdown, no auto restart
---
unplug from mainboard the yello-black colored SATA power cable
unplug SATA 2 cable - all 4 SATA cables from mainboard are unplugged
unplug and plug in P1 white power supply connector
power button to start and shutdown
success - systems is shutdown, no auto restart
---
plug in to mainboard the yello-black colored SATA power cable
plug in to SATA 2 the OS SSD + power - switch from P4 to P5
all other SATA mainboard ports are unplugged
case chassis still open
put SATA SSD (OS) on non metallic surface
success - systems is shutdown, no auto restart
---
put SATA SSD (OS) on metallic surface
fail - systems is shutdown, does auto restart
---
put SATA SSD (OS) on non metallic surface
fail - systems is shutdown, does auto restart
BIOS - power down ok
---
exchange SATA cable for SSD (OS)
switch to SATA 0 - blue mainboard connector
Display Port and USB are still attached, no LAN cable
success - systems is shutdown, no auto restart
---
power up the system via power button
fail - systems is shutdown, does auto restart
pattern - after switching the SATA mainboard port, system does stay shut down once; after manual start > fail
----
connect LAN cable
---
BIOS - power down ok
---
BIOS reset
restart
BIOS - SATA > AHCI
restart
success - systems is shutdown, no auto restart
--
close chassis case
disconnect usb
disconnect Display Port
LAN cable still attached
success - systems is shutdown, no auto restart
---
Wake on lan fail
---
switch to another SATA cable
plug in to SATA 1 (black connector mainboard) the data HDD + HDD power 6 cable
success - systems is shutdown, no auto restart
---
BIOS
Power Man > WoL > On LAN Only
WoL - ok
---
some minor BIOS tweaks
disable COM port...
flash_dell
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May 18th, 2023 09:00
Hi @DELL-Joey C
the auto start problem happened again.
I have change nothing from the moment it worked.
Even disconnecting the LAN cable doesn't improve the situation (WoL).
Back to square 1...
DELL-Chris H
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May 18th, 2023 10:00
Flash,
That is indeed odd. What I would recommend is to make sure the server is up to date on BIOS, iDrac, Perc and NIC, then for testing purposes I would take the server to its minimum to post configuration to see if it still occurs. If it doesn't then we know one of the removed devices is causing the issue.
Minimum to post for the T20 is removing everything from the server, both internally and externally, but the following
Now if it doesn't do the restart I would individually reinstall the removed devices and then retest, until something causes the issue to reappear, identifying the device.
Now if it does it under the minimum to post configuration then consider, if available, swapping with known goods to test.
Let us know.
flash_dell
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May 18th, 2023 13:00
Hello @DELL-Chris H
thank you for taking the time.
A big shout out to @DELL-Joey C and you for the fast and helpful replies - this is great Dell service.
I have narrowed it down to enabled Wake on LAN causing the issue.
I did a BIOS reset (software - load defaults) and only did change
1. SATA from RAID to AHCI - success, no auto restart
2. enable pure WoL - fail
For my use case I do need WoL / an option to remotely start the system when it is shut down.
Can you please support with that?
Best
flash_dell
flash_dell
10 Posts
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May 18th, 2023 13:00
I have enabled Intel AMT access to start the system remotely.
However having WoL working would be more convenient - any chance?
DELL-Joey C
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May 18th, 2023 18:00
Hi @flash_dell,
It looks like you may have to use Intel AMT, as WoL would not work well in your configured environment.
PS: You have done an intensive troubleshooting, impressive.
flash_dell
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May 18th, 2023 21:00
Hi @DELL-Joey C
thank you.
The topic of WoL should be solveable - the issue of auto start with WoL activated in BIOS does occur with unplugged LAN cable.
I expect it to not receive any signal then.
So why does the T20 auto start with BIOS setup to WoL enabled? Is this properly implemented in A20 BIOS version? Anything else to adjust?
At one point the system did stay off, and could be started using WoL.
DELL-Joey C
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May 18th, 2023 23:00
Hi @flash_dell,
I've noticed the issue pattern occurs between OS HDD and network cable plugged in. I tried looking at the solution based articles, all are Windows based. Your OS is TrueNAS, it is not in the supported OS which I can give a proper comment/opinion/solution to your issue. I've read that WOL works differently with OS, BIOS settings is fairly simple. It is only a setting to turn on or off.