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Latitude 5591 with TB16 Dual Monitor Temperature Throttling
I have a 2 month old Latitude 5591 with i7 8850H and Nvidia MX130 with a TB16 Thunderbolt docking station. I have dual 4k monitors hooked to the TB16. Since day 1 I noticed a strange processor clock cycle condition where the Proc Clock would be fine then go to 80mHz during a load. I see this most often when I bring up a video from youtube or twitch.
After a month of investigating and experimenting with Throttlestop and Intel XTU trying to find a setting that would allow for performance without the clock throttling crash, here is what I have found. I have been using HWiNFO and HWMonitor to view system performance and data along with Resource Monitor and CAM.
Undervolting in Throttlestop helps some with processor temp if you run a stress test like Cinebench but under normal usage processor temperature and GPU temperature is never an issue. Temps almost always stay below 80*C processor temp.
Turning on Speed Shift helps with performance but does nothing for the clock throttling down to 800mHz that I see.
Windows Power setting affect the system normally. I see the processor clock and fan speed cycle up and down as load increases and drops. This is not the clock throttle crash I see with the video.
The clock throttling appears to be temperature related. If I monitor the Temp0 sensor in HWiNFO the proc clock throttle usually kicks in when the sensor hits the 75*C range. Sometimes it is 77*C sometime it is 73*C. This sensor is obviously not the sensor triggering the throttle, but it is close to it. When the system drops the clock rate to 800mHz the temp sensors all drop off and the clock will return to normal 4000mHz range plus or minus for a while. Again, if watching a video after a minute or so the temperature will creep back up and the system throttles again.
So Temperature related...I have put the laptop on a fan board that blows air up into the case. This helped about 50% but the system still throttles.
If I disable Turbo, it helps a ton with the temperature and I dont see the total clock throttle happen especially while watching videos, but doing this effectively drops my proc from a 4000mHz to a 2600mHz speed....YUCK! Video is more consistent but I can do nothing else on the laptop while the video is playing.
In my situation, I have not seen an issue when undocked and just using the built in monitor. This appears to be a docking station dual monitor system power heat problem. I have a USB docking station ordered to see if it acts like the TB16 setup does.
Questions:
How can we fix this issue of overheating when I am doing nothing more that watching a video on an external monitor?
Will an external GPU fix the issue pulling enough load off the onboard chips and reducing heat while I am docked with dual monitors?
Will there be a hardware recall to correct the cooling issue?
Will there be a firmware or BIOS update to fix the throttling which is obviously happening under normal usage and not even under a stress test.
Amon-Ra2000
8 Posts
0
July 29th, 2019 03:00
A solution has been found for the performance problem limited at 800mhz with TB16 Mono OR Dual Monitor ! Install the latest version of bios : Bios 1.8.1 and, enter the bios (F2 at start), "Performance > C-State Control" and uncheck "C-State Control" Source : ProSupport Dell FRANCE (29/07/2019)
HllCntryHrrcane
45 Posts
0
July 29th, 2019 05:00
I am told that Dell's patch BIOS for this issue will be release in the next month. It is essentially the BIOS they developed from my case to fix the crash throttling. I would hold off on any work arounds until that next BIOS update.
Amon-Ra2000
8 Posts
0
July 30th, 2019 12:00
update :
enter the bios : uncheck "C-State Control" and you must change the Security Thunderbolt "User Security" (the second value by default) in 3th value..... Warning : "No Secutity" (first value) causes Blue Screen in Windows OR Windows do not booting.
Amon-Ra2000
8 Posts
0
July 30th, 2019 12:00
thank you I try :
MrZak-devs
8 Posts
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July 30th, 2019 12:00
numsu
4 Posts
0
August 12th, 2019 02:00
@Amon-Ra2000 There's also a new version 1.9.0.
Is the issue fixed and is the fix you proposed earlier about the bios settings still valid?
Amon-Ra2000
8 Posts
0
August 12th, 2019 02:00
user543127
1 Message
0
October 28th, 2019 23:00
So is it safe to purchase a 5591 model now after all these updates are released?
If I'm not planning to use it with a dock station, can I expect it to work without throttle and extreme fan noise in regular coding activities?
numsu
4 Posts
0
November 3rd, 2019 23:00
Yeah. The throttling issue is finally fixed.
The laptop still has some temperature issues if it's put under heavy load (several application servers and several monitors) and it will make some fan noise, but I'd guess that's normal for any PC. With a decent amount of monitors attached and normal coding activities, it will perform well and quietly.
Amon-Ra2000
8 Posts
0
December 30th, 2019 00:00
Hello,
I come back to write here because to date, the Latitude 5591 with TB16 still does not work together correctly. You should know one thing, the products worked very well at the time of their release. The updates that sabotaged the equipment. Dell was unable to provide a reliable update that was tested and approved. To date, it has the Latitude 5501 + WD19BT which are available which replaces the 5591 + TB16. Have people tested this equipment? are they reliable?
Thank you for waiting. I did review the case records, unfortunately the system is out of warranty and our scope of is limited to in warranty systems. You may continue to converse with the Dell community members or contact out of warranty team @ 09 69 39 00 30 (9 a.m. - 6 p.m. Monday to Thursday 9 a.m. - 5 p.m. Friday) for further assistance.
DELL-Cares
navafolk
3 Posts
0
July 15th, 2020 03:00
Hi pros,
Any update on this?
with TB16: I got overheat on top left corner (area near power port and usb type c port) with light usage (chrome tabs, youtube...). The fan is really noisy like jet engine but air outflow is not that hot, but top left corner is burning.
without TB16: My laptop back to normal whatever it is on battery or charger plugged.
Surely, everything is up to dated and my computer is 1 week old.
Amon-Ra2000
8 Posts
0
July 15th, 2020 03:00
I had to change the computer with a DELL 5501 and a WD-19 Dock. and it works without problem. DELL did not provide any solution, replacement or refund. They deliberately drag things out so that the warranty expires. I think this is my last order from them (I have been a customer for 20 years)
navafolk
3 Posts
0
July 15th, 2020 03:00
Hi @Amon-Ra2000 ,
Good to hear you new system running well.
Did you have any change to test WD19 with old computer?
Amon-Ra2000
8 Posts
0
July 16th, 2020 10:00
So, I have not tested 5591 + WD19.
But I still have 3 TB16 (180W & 240W) and it works well with 5501.
I think the problem comes only from 5591. The hardware has become incompatible with the latest Intel updates (a user explained it very well on this forum, go Google => "tb16 dell driver problem intel thunderbolt controller")
Soluce ?? : you must downgraded TB16 Firmware to get the 5591 to work properly. BUT the downgraded TB16 Firmware is not possible.