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Latitude 7400 - high(er) CPU when plugged in
Latitude 7400 i5-8365U touchscreen - fully patched with Windows 10 1903 and Dell Command Update.
When running on battery the CPU will idle at 0.80Ghz to 1.2Ghz, the laptop is cool, quiet, and gets pretty good battery life.
When plugged in, the CPU won't idle below 1.5Ghz. The laptop heats up and the fan turns on. I'm typically in a quiet office/room so even at a low speed, I can hear the fan. Was plugged into Dell Thuderbolt TB16 dock all day today and the fan never turned off - even with no apps open.
My non-scientific test is that I keep Task Manager open, and plug in the power. Power comes from a USB-C charger, regular (barrel) power connector, or dock cables (USB-C or Thunderbolt all Dell branded). The CPU will immediately go up to 1.5Ghz+ and the fan turns on. Unplug from power and the CPU throttles down, the laptop cools down, fan gets quiet, then fan turns off.
Never had an issue with the 7490 that this is replacing.
11334
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Posted January 20th, 2020 11:00
Did you ever find a solution to this? Experiencing the same issue.
11178
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Posted January 29th, 2020 03:00
Hi I can see that on my device too! If there is an update here, please let me know. This topic is really annoying!
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Posted January 29th, 2020 06:00
We have a community with over 3000 users who are experiencing same issues with the 7490 and the 7400. Even when updating all drivers and firmware, it doesn't help at all.
Still no solution regarding these issues from DELL -> still under investigation with DELL.
When checking with HW INFO (7400 device):It's like a plane who's taking off but all the time.
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Posted January 31st, 2020 05:00
Same here. Regarding to task manager: https://i.imgur.com/xRmFkTd.gifv
1. Plugged (dock WD19): 2-4 GHz and getting hot & loud
2. Unplugged: 0.9 -1.3 GHz, silent & cold
3. Plugged: 2-4 GHz and getting hot & loud, even when idle.
Dell Command fully updated.
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Posted April 5th, 2020 03:00
Hello, how is it possible to track this issue? Would like to know a solution as soon as possible.
Thank you in advance.
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Posted April 7th, 2020 21:00
I have the same issue
my DOCK WD19TB,
plugging DOCK, system really heat and fan up. Then it really annoys too much
Please have solution soon.
Thanks,
8110
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Posted April 8th, 2020 04:00
Active cooling policy in control panel power settings, windows battery meter on best performance, charging generates heat due to more power being drawn and the electricity flowing through the laptop, maybe your Dell Power Settings are on performance rather than something else.
Check which apps are consuming more CPU and RAM
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Posted April 8th, 2020 09:00
@AdrianG001 This happens with nothing running. It appears to be an issue with the hardware not letting the CPU throttle down when plugged in. Running on battery the CPU will get into the 0.80Ghz range and run nice and cool. Just plug it in and it will jump to 1.5Ghz. No other changes besides plugging it in.
Seems to be happening to quite a few people. Curious if these are all machines with i5, or if the i7 does it as well.
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Posted April 9th, 2020 13:00
I've got a 7400 with i7-8665U and I'm having the exact same issue. I haven't found any power or performance setting that will cause the processor to spin down when it's idle. Resource Monitor shows 15% CPU Usage, but 140 - 168% Maximum Frequency, and the fan is running full out. Switch to battery and the % of Maximum Frequency drops significantly and the machine will cool off. If anyone finds a solution, please post it.
mvalpreda
1 Rookie
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91 Posts
11713
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Posted November 15th, 2019 16:00
Does it in the BIOS as well.
Rebooted the machine, went into BIOS and it was fine. Plug the machine in, within a few minutes the fan kicks on and the machine is very warm. Unplug from power and the machine cools down and the fan turns off.
I think this is a BIOS issue. Hopefully engineering can handle it. I have more and more of these to deploy and the fan noise and heat is an issue.