lithetails
1 Nickel

Bios bug: Latitude 7440

Hi,

I've updated the laptop BIOS as soon as Dell released an update for my computer and I experienced how Dell makes wrong thing:

- From Bios A8 (factory BIOS in my case), the keyboard in Linux was broken but at least, the rest of the computer, mostly works. I was expecting a fix from Dell in this scenario so I was updating after each BIOS release until...

- ...In february, Dell released a new update with a fix for the keyboard in Linux (finally!) but... They introduced a new bug in CPU management (probably in PM states).

This bug consists, basically, when the laptop boots FROM battery (no charger or dock) the CPU does NOT scale correctly and by default is scaled to the minimum frequency, 700 Mhz. This happens on Linux as well as Windows 8.1 working on UEFI mode.

So I had to reboot the computer or even shutdown the laptop until the laptop wanted to boot correctly. Supposing that laptop booted correctly, It could also happen whether the computer was suspended by the OS or maybe closing the lip and as soon as the laptor was resumed, sometimes the CPU did not scale well fixing the CPU freq to the minimum.  Apart of breaking the video output in pre-OS screen when your laptop is attached to dock or when you're using an external screen and lid is closed. This is annoying but I could deal with it.. 

- Now, after 3 months with the bugs previously explained, Dell has released a new version few days ago and the changelog prays: 

-Fixed CPU may stay at low speed after resume from standby

-Fixed no display on external monitor when lid close in pre-boot/DOS mode

And my surprise is: THEY DID NOT FIX THE CPU PROBLEM. Come on Dell! I spent  more than 1500€ in this laptop and it is almost useless, I can only work with it when it is docked like a desktop PC. Different colleges from my office chose the same laptop and we are suffering the same errors on Windows and Linux. I wrote this post because I am really angry after last BIOS update, I expected more from quality test team. I called to technical service and they told me it is a software problem, not a hardware, even a technician came to my office and he said that everything was ok with the laptop.

I hope a solution from you, almost 1 year with this laptop and there's not solution.

Cheers. 

22 Replies
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Furty
1 Copper

RE: Bios bug: Latitude 7440

Hello Dell team,

with my E7440, I have also the same problems (Win 8.1).

After BIOS upgrate ver. 15, I have CPU speed issues every day. Only restarting can solve my problem. But I havent time for restarting my laptop 10 times per day.

Is there some workaround for fixing CPU speed without restart? I tried to hibernate and after wake up the CPU frequency was ok. But sometimes the laptop wake up and no application is running. Hibernate doesnt work everytime.

Cheers

alikov
1 Nickel

RE: Bios bug: Latitude 7440

Hi,

I have E5540, which also had keyboard problems. After updating to latest A12 BIOS keyboard problems mostly resolved, but now I am also experience minimum CPU frequency after resuming from sleep state on battery. Funny thing is that I did not had CPU frequency problem before, and it was introduced in A12, which states "Fixed CPU may stay at low speed after resume from standby" in it's changelog!

henel321
1 Copper

RE: Bios bug: Latitude 7440

I have this as well, had it with earlier bios versions and still have it at an even higher rate of occurrence on Bios V15.


This laptop has been a nightmare from day 1 and I'm starting to get really fed up with it. 3 new batteries, motherboard that didn't recognize the power adapter wattage correctly twice and now this... Smiley Sad

0 Kudos
henel321
1 Copper

RE: Bios bug: Latitude 7440

Two more months of this *** with nothing from Dell either in the forums, bios updates or from the support... Completely useless.

Time to switch to Apple?

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lithetails
1 Nickel

RE: Bios bug: Latitude 7440

This laptop is the last one I buy from Dell, bad support and problem after problem.

Buying a Mac from Apple you get the best of all worlds: OS X, Windows runs better than any other computer and Linux well supports all hardware including trackpad...

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9 Rhodium

RE: Bios bug: Latitude 7440

There are  downsides as well:  the hardware costs at least twice as much, and Apple hardware essentially becomes competely unsupported after two more OS cycles (i.e., three years).  The last one is even more significant:  everything including the SSD on many models is permanently mounted inside with adhesive or solder.  Translation:  since any failure requires an expensive logic board replacement (at 3X or more what Dell charges), get 3-year AppleCare to carry the system until it's obsolete and ready for recycling.

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lithetails
1 Nickel

RE: Bios bug: Latitude 7440

You are only right about with a Mac you cannot change anything but... It costs at least twice? You kidding? The same business laptop with Apple was cheaper than my E7440 with 8 GB of RAM, i7 and 256 GB SSD.

Three years of OS support? OS X El Capitan supports Macs from 2008, please get more informed next time.

Apple Care + is cheaper than Dell support. Anyway, this is a business laptop, not for a average customer and MacBook Pro is neither. This is my experience. No more Dell.

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9 Rhodium

RE: Bios bug: Latitude 7440

My reference was to hardware support by OS cycle - not the OS itself.  Good luck getting repair support from Apple once three years are up.

There's nothing wrong with Apple's systems - the hardware in most cases is so closely similar to what's inside a PC (the manufacturers are, after all, the same - Apple's systems are built by the same contractors that make systems for Dell, HP, Lenovo, etc) -- and if you're expecting perfection, just ask anyone who's seen a Mac destroyed by a swollen battery or had a video chip fail, etc.   It does happen - and with about the same frequency as it does with Dell.

You DO get better support than with any PC vendor - yes.   Better hardware though?  Nope - it's the same, as is the frequency with which problems arise.

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Bimme
1 Copper

RE: Bios bug: Latitude 7440

Has there been any update / response from Dell on this issue?

I have the same problem, and it is really frustrating.

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