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Go to SolutionPrecision 7550 Degraded Performance After BIOS Update
I have installed the recent Security update for BIOS and the laptop is now extremely slow, laggy etc. I have done no other change.
We are talking about i-9 CPU, 32GB RAM etc. It just got like 3x-4x slower. This is really disappointing . Cant really roll back since there are security issues, so what's left for me to do then?
AdrianG001
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Posted June 28th, 2021 03:00
Probably a good idea to reset bios to defaults, and then reapply setting you had before one by one.
Ryan C NYC
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Posted June 28th, 2021 11:00
Did the below "solution" fix your problem? I was told by a Dell engineer this is a known problem and related to AC power. I tried resetting these to default as well and the problem still persisted. I ended up downgrading to 1.7, works fine again.
Pupo Lopez
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Posted June 29th, 2021 14:00
Same problem for me...
@Ryan C NYCdo you have any ticket number about this case? Is this problem really recognized by Dell support?
I tried to ask but it's totally unknown for them. How did you measure the performance?
Ryan C NYC
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Posted July 8th, 2021 19:00
No ticket number they claim it's "in the works." Frankly there is no urgency to update if your BIOS / system is working fine anyways (which 1.7 should do).
The same problem here. i-7 CPU, 64GB RAM. Ubuntu 20.04. The performance fell by 3-4 times as for topic starter. Went back to the previous BIOS version.
Not sure that it is related to the whole system performance. But nvme SSD performance has fallen by 4 times. Measured with Linux `dd` command.
Hi,
First after BIOS 1.8.0 update I did notice anything special.
Today the CPU was stuck to 0,86 GHz. Unplug power cable and plug again resolved my case.
Now the CPU is back to 3.6 GHz - 4.25 GHz.
If I restart the PC with power cable connected the problem is back and temporary solution is the same.
You will defined note when CPU is working below 1 GHz. For example Cinebench R23 multi core result will drop from 7000 to 2000.
Better to wait the new BIOS version. Why this problematic 1.8.0 version is still available to download?
Hello everybody !
I had the same problem on my Precision 7750 i9. I upgraded the bios to v1.8 on July the 14th and it slowed down dramatically.
It even made some problem when I plug my machine to a WD19 DC dock : on startup the bios prompted me that the AC Power was not enough (though this docking station is designed for Precision laptops !). That problem seems to confirm that the issue is AC power related !I had no other choice then to downgrade to 1.7 to make my computer work again properly.
I can't understand why Dell released an update with such a bug (and still let it available to download more than a month after the first problems coming out) !!!
GaryJackson
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Posted July 30th, 2021 00:00
Hi All,
Bios 1.8.1 installed and AC Power issue resolved.
I did get a PM only yesterday saying "BIOS 1.9.0 is expected to be available post by end of August 2021 and this should resolve the issue." Little unsure why 1.8.1 was not mentioned?
Anyway all is good with 1.8.1