Unsolved
1 Rookie
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9 Posts
1
15812
November 1st, 2022 07:00
Latitude 5431, random CPU performance issues
Greetings community !
The company I work for has recently purchased a batch of Latitude 5431 laptops for a standard replacement and we started receiving numerous issue requests from our users. The issue is not consistent - may happen at any time, but once it occurs the laptop becomes almost unusably slow. During our investigation we found out that while the issue is active the CPU's performance is cut to no more than 10% regardless of the current load.
So far we have tried almost everything without success :
- Dell's standard troubleshooting tools (no issues found)
- Update all drivers and firmware
- Update BIOS
- Restore BIOS factory default settings
- Edit Windows power plan to high performance.
At this point we are running in circles. If anyone knows how to resolve this issue - please assist!
Thank you!
techfindinganswers
2 Posts
1
December 20th, 2022 15:00
Any updates on this? Trying to downgrade to 1.2.2 from 1.8.1 but it's taking forever and a day.
RubberDucky76
2 Posts
1
December 21st, 2022 11:00
Looks like we were able to downgrade to 1.2.2 from 1.8.1. We uninstalled the System Firmware device and also uninstalled the drivers in Device Manager. Downgraded to 1.7.0 then downgraded to 1.2.2. Make sure to clear out the c:\Windows\SoftwareDistribution\Download folder first.
techfindinganswers
2 Posts
0
December 21st, 2022 13:00
Thanks for the heads up RubberDucky76, that worked!
De Rob
4 Posts
0
December 23rd, 2022 05:00
Hi Direct-Lostak
Just to be sure, when I alter all ValueMax values that are listed within: 54533251-82be-4824-96c1-47b60b740d00, I have to alter about 100 values. Is this correct?
Direct-Lostak
3 Posts
0
January 5th, 2023 03:00
Hi @De Rob ValueMax is not a fix. We thouth that it will work but does not... however for us on about 10 devices downgrade works great right now. But there are some security issues in older BIOS so it is not ideal.
Core parking working on version 1.2.2 so you have to test it under load. Are you looking at parking cores on idle or under load?
Can you send image from QuickCPU how it looks? And also output from CMD: wmic bios get biosversion
De Rob
4 Posts
0
January 5th, 2023 03:00
Downgrade to 1.2.2. unfortunately doesn't work for us, problem keeps insisting and Dell support only wants to look at individual cases.
On one laptop it occurs with Teams, on the other with Docker, but apparently they are different issues according to Dell
DamGeek
1 Message
0
January 5th, 2023 13:00
Hi all, I've been having this issue and started looking at the CPU's. I found that when it went in to slow mode, 8 of the cores basically did nothing and one core was then left handling everything and was saturated. Even the other 7 cores that were up and running were not being utilized. I also found that things started to behave like this when the fan cut in. I've looked at other machines albeit with less cores and they generally have tasks evenly spread across all processors. Be interesting to see if this is similar to others. To see what the cores are doing:
Run Task Manager
Performance tab and click on CPU
Right click on the graph then "change graph to" > "Logical processors"
We are trying the older bios next but the behaviour of the processor did not look right with only one core running everything and getting saturated.
I was speaking to Dell today and because it passed the diagnostics test, they said it was software related. The issue is that the diagnostics you access at boot up with the windows button +d cannot be run when the laptop is in this slow mode. Rebooting the machine effectively clears the error. When I ran it using the tool on their website, it passed the test but even then they was a banner saying this test is taking longer than expected.
jwmarshanoble
1 Rookie
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8 Posts
1
January 5th, 2023 14:00
It's pretty well established at this point that it's a BIOS issue and the CPU is being throttled down to a single core.
Dell needs to release a BIOS update that resolves the issue.
Downgrading to BIOS 1.2.2 will 100% resolve the issue until a fix is released.
admrich
1 Message
0
January 9th, 2023 16:00
Hey, can you clarify exactly what you did in a bit more detail please.. I've downloaded the older BIOSes 1.7.0 & 1.2.2
I've used Device Manager to delete the System Firmware Device choosing to delete the drivers where possible.
I've then ran the 1.70 Firmware rollback, restarted the computer .. the hardware indicates 1.81 still
grandtech-rick
1 Message
0
January 10th, 2023 08:00
In theory, 1.10.0 gets released later today 1.10.2023 and addresses this issue.
Kyroha
2 Posts
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January 11th, 2023 05:00
Hello
@Dell , did we have some news on this update ? It's a huge problem cause here, We use Intune to manage our 5431 and I cannot succeed to block the reinstallation of the 1.7.0 BIOS by Windows Update ... For the moment, I've just ask to user to pause Windows Update for 5 weeks to avoid the reinstallation.
Please give us update on this release quickly as possible.
Direct-Lostak
3 Posts
1
January 11th, 2023 05:00
Hi, we had same issue with Windows Update updating BIOS to latest version (1.8.1 in our case). You have to disable Capsule Firmware Update in BIOS. We have run Dell Command Configure batch on our affected devices and BIOS is no longer updating.
Benhhh
6 Posts
0
January 12th, 2023 15:00
That would be so good if this happened. Every day I see if its released yet, but we are still waiting...
krkl-holmen
1 Message
0
January 16th, 2023 01:00
We have a small amount of these laptops and a few with this exact problem.
They got delivered with BIOS 1.3.2. Can not see that version listed.
It refused to downgrade to 1.2.2. Had to upgrade to 1.7.0 and then successfully downgrade to 1.2.2.
This seams to have solved the problem for us so far.
MarcoTo
9 Posts
0
January 16th, 2023 06:00
Is there a release date for the new bios here? This state with old bios does not feel good.
Thanks a lot.