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July 26th, 2024 17:31
XPS 9320 throttling to 0.40ghz
XPS 13 Plus 9320
I've been using my XPS 9320 for over a year. Recently, 2 or 3 times per day, the laptop will randomly throttle down to 0.40ghz. The throttling doesn't seem to have any specific triggers, even if the CPU is barely being used and not hot it will throttle to 0.40ghz.
I searched and found people saying this is caused by a signal called BD PROCHOT. I installed the recommended software called ThrottleStop and it shows that BD PROCHOT is active, unfortunately I am not able to turn it off with that software.
I tried changing some of the power options, but that didn't solve the problem. The only way I can find to fix it is to unplug the power and plug it back in which works most but not all of the time. After I do that the CPU returns to normal speed.
Does anyone have a solution to this issue? I like the laptop and want to continue to use it, but in the current state it is a daily annoyance and I need a working laptop.
HedgeFundManager
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July 27th, 2024 20:59
sound like your USB power is not working so try a different one
IronRobot
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July 28th, 2024 02:49
@HedgeFundManager Unfortunately I've tried 4 different USB-C chargers and all of them have the same problem.
HedgeFundManager
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July 28th, 2024 18:57
Try an Apple 140W charger, they are cheap and mass produced, third party ones are really affordable
TW-XPS
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December 17th, 2024 03:42
Unplugging the power supply seems to reset this.
Since I disabled C-STATES in the BIOS, this problem went away.
HedgeFundManager
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December 17th, 2024 04:59
usually c-states are simply a power management feature
TW-XPS
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December 17th, 2024 05:21
Yes they are, but it seems that after overheat throttling the processors are getting stuck in some kind of C-STATE clock or voltage reduced state. Like I said above, unplugging the power supply seems to reset this.
HedgeFundManager
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December 17th, 2024 16:36
Sounds like you may need to reinstall Windows clean with the UEFI reset to optimal
TW-XPS
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January 3rd, 2025 23:37
I apologize, the C-State thing did not fix the overheating problem at all.
However, I have found a solution with ThrottleStop. On the TPL page, I have checked "Turbo Power Limits > MMIO", unchecked "Power Limit Controls > Disable Controls", then set both PL1 and PL2 to 30. This limits the temperature to around 90C. Changing PL1 and PL2 lets you adjust to any desired temperature.
"Outbyte Camomile" also works great but does not allow you to set a desired temperature.
HedgeFundManager
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January 4th, 2025 01:57
C states are related to power management and standby
Set turbo boost enabled but set power limit to < 55W
(edited)