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Dell Defect Turning 2.2GHz CPU Into 100MHz CPU?
jtavares2 writes "In what is being dubbed Throttlegate, scores of users on many message boards have been complaining about nexplicably aggressive throttling policies on their Dell Latitude E6500 and E6400 laptops which cause their CPUs to be throttled to less than 5% of their theoretical maximums even while at room temperatures. In many cases, the issue can be triggered just by playing a video or performing some other trivial, but CPU intensive, task. After being banned [PDF] from the Dell Forums for revealing 'non-public information,' one user went so far as to write and publish a 59-page report [PDF] explaining and diagnosing the throttling problem in incredible detail. Dell seems to be silent on the issue, but many users are hoping for a formal recall."
Comes a bit slower at 100 MHz. I'll probably get second or third, damn Dell laptop.
I click on the link and well, I think it's being hosted by one of these Dells
It's NOT me! It's the meds! I'm on 1000mg of Fukitol.
Seriously, just STFU.
"I use a Mac because I'm just better than you are."
I hear Dell is planning to issue a complimentary turbo button for any user experiencing the problem.
Energy Star Compliance at it's Best.
Here is a mirror of the PDF: mirror. It was put up by the guy who discovered this, I'm just copying the link.
User/password is "guest" and "guest".
Be warned, it's about 25MB.
Comment forecast: Bits of genius surrounded by a sea of mediocrity.
I had a pre-release e-series machine from Dell on my desk last year. It's like they built the thing from the outside-in. Even on a 'release' E6500, Ubuntu seems to halt and die on full-screen video, Windows AHCI drivers that work everywhere else cause BSODs, and the power management firmware seems like it was written by a roomful of meth-addicted monkeys.
I've never been more disappointed with Dell as I was with the E6500. At least when the Optiplex GX260 power supplies all failed a few years ago, it was easy enough to fix them. These things are abhorrent.
"Sometimes, I think Trent just needs a cup of hot chocolate and a blankie." -Tori Amos on Nine Inch Nails
At least the batteries will last for 50 hours.
Better known as 318230.
you just have to hit the turbo button! Duh!
Monstar L
Windows 7 on a blazing fast 100mhz CPU. Suck on that /.ers. And hey it does Aero too! At least I think it does, bought mine last week and just got to the login screen.
I called their Pro Tech support to help diagnose a very similar issue. The CPU's were running at 6-700Mhz. I spent 45 min on the phone with them until I finally found a forum explaining it had to do with the Intel SpeedStep feature. When you go into the BIOS, go to Performance, SpeedStep, and disable it. They said thanks, added to their Knowledge Base and gave us one more reason to get away from them.
Here's a post on Dell's forums describing the issue
From the link:
Some key points from the report (keep in mind this is specifically for the E6500 with the NVIDIA graphics option, but much of this likely applies to the E6400 and/or the Intel integrated graphics option):
1. The problem is NOT an overheating problem - the system simply does not overheat. It is due to premature and overly aggressive attempts at thermal control, invoked at what are NORMAL processor operating temperatures (65-80 Celsius), possibly due to faulty ACPI "passive cooling" parameter definitions and/or control methods.
2. The problem is substantially more pronounced when the system is docked.
3. The problem is aggravated somewhat by the use of dual monitors when docked as opposed to a single monitor.
4. Since the problem is all about temperature, the higher the surrounding ambient temperature in the room, the sooner and the greater the performance loss.
5. The symptoms are much more highly correlated to elevated NVIDIA GPU temperature than elevated CPU core temperatures.
Some miscellaneous corollaries:
1. Any blockage of air inlets or outlets (including, of course, dust) will aggravate the problem.
2. The reason people report shockingly high percent CPU utilization statistics when their system slows down is that the overall capacity of their processor is degraded by the throttling mechanisms. The same processes running on a CPU that is subsequently throttled necessarily will demand a higher percentage of the processor's remaining capacity.
3. The reason some folks report persistent slowness even after installing software to prevent CPU downclocking is that more than one throttling mechanism is in play here. In particular, Software-controlled Clock Modulation (also called On-Demand Clock Modulation) occurs in an almost completely invisible manner, as opposed to performance state changes (which are usually monitored by common utilities). Another often-invisible throttling mechanism is Dynamic FSB Frequency Switching (where the FSB frequency is slashed in half), though if you prevent performance state changes, that takes care of preventing this too (since it's part of state P3).
4. The reason there aren't more complaints (though many are accumulating these days) is that users who experience this problem simply have no way of knowing what the cause is and are likely to blame the wrong thing (Windows, recently installed software, cooling hardware, etc.). Untold masses may be adversely affected by this problem, but nearly all of them wouldn't know it because there's no way for them to tell. Also, the problem is at its worst only when in a docked configuration, which may not be common.
5. The reason complaints are escalating now more than before is that this is the first summer that people have had this system (in the Northern Hemisphere, anyway). I think it's safe to say that ambient temperatures are higher for most E6400/E6500 users now.
6. The problem can be substantially mitigated by pointing an external fan at the system.
7. The problem can also be mitigated by software, such as RMClock, that can override the throttling mechanisms in question, at the expense of negating all passive thermal management (though critical temperature shutdown mechanisms may remain in place).
Step 4: Lawyers profit, everyone else gets $5 off at the Dell shop.
"Anonymous could not immediately be reached for further comment." - International Business Times
So do I get this right? As soon as I actually need my CPU to do some work, it starts to slow down? While it's quite able to run at full speed as long as it's idle and not doing anything sensible?
Computers get more and more human every day.
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
Non-public information? How can such a thing exist on a commodity good that has already been released to the public, and especially when they are trying to cover up a defect which renders their product offering as fraudulent (because it doesn't work as advertised) and not fit for sale? Did they expect this to NOT blow up publicly when they ignored user complaints?
The Christian Right is Neither (Christian nor right). See: Matthew 23, Matthew 25, Ezekiel 16:48-50
People get too excited about product recalls. It just means the manufacturer has to eliminate or at least mitigate the failure. In this case, Dell will issue Firmware A.02 or whatever and the problem will vanish. Not a big deal.
I've had a lot of product recalls in my life because I drive a car and I have a baby. Apart from a few rare instances from Kodak and Honda, this doesn't mean the consumer gets a full refund and all of the products wind up in a landfill.
Often in Error, Never in Doubt.
I am frome the 17th cenchurie, ande the worde is moste deffinetlie "scowers."
Dell has aggressive CPU throttling in the BIOS. I have an Inspiron 6400 w/ Core 2 Duo 1.83ghz. In XP, Vista, and 7, it would throttle way the heck down and not turn the fan all the way up. Because the fan was annoying. It would go down to around 200mhz.
I fixed it in software by installing RMClock and i8kspeedfan. But my computer was usually around 55 and went up to 65 playing HD video, and the fan would kick in, and suddenly it's really loud.
Also helped to get one of those cooling pads with a fan in it.
So I took apart my laptop. There were 1" thick sheets of dust between the processor and graphics coolers and then between them and the output duct.
Cleaning them out, put it back together, now at full speed it rarely goes over 55. The BIOS throttling that kicks in at 70C or 75C or so hasn't come on since the software fix. Don't even need the Targus cool-pad anymore.
So basically, Dell builds a system with inadequate cooling, that is disabled from maximum speed even when system policy is set that way, and instead throttles you down in the BIOS 'til you can't even move the mouse until it cools down. No option to allow the fan to go to full-speed, no way to do it except 3rd-party software, and really darned loud when it happens.
It must've sucked to have a 2.3GHz in this thing...
As a newly hired Dell Tech support employee starting his 2nd day at work in about 9 hours, I have a feeling tomorrow is going to be a looong day.
I click on the link and well, I think it's being hosted by one of these Dells
At the end of one of the forums, someone links to a mirror. You can find the report here:
http://www.sigmirror.com/files/44490_iweoz/throttlegate.pdf