Microsoft Surface Firmware Updates Causing Throttling, Wi-Fi Issues: Reports

Microsoft is currently working on a fix for the throttling issue on affected Surface devices.

By Nadeem Sarwar | Updated: 16 August 2019 14:48 IST

Microsoft Surface Firmware Updates Causing Throttling, Wi-Fi Issues: Reports

Microsoft is currently working on a fix for the throttling issue on affected Surface devices

Highlights

An erratic CPU flag is reportedly causing the throttling problem
Affected Surface devices are throttled down to just 400MHz
Rolling back to older drivers reportedly solves the 5GHz Wi-Fi issue

Microsoft's Surface devices have been hit by a severe CPU throttling issue, causing the processor to throttle down to just 400MHz. Additionally, some users are reporting Wi-Fi connectivity issues, specifically while trying to connect with a 5GHz network, after downloading new firmware updates that were reportedly released earlier this month. Microsoft has been made aware of the issues and its team is currently working on a fix for the CPU throttling problem that will be rolled out via a firmware update.

The CPU throttling issue primarily affects the Surface Book 2 and the Surface Pro 6, as per complaints we have come across on Reddit. It is not clear what exactly is causing the issue that is clocking down the CPU to just 400MHz and affecting usability, but some users point the issue towards an Intel CPU flag called BD PROCHOT (bi-directional processor hot). Based on the user reports, the throttling appears to stop when the AC adapter or Surface Dock is disconnected, but some users also suspect it to be an issue generated by third-party antivirus software.

In case you are unaware, the BD PROCHOT is put into place to ensure that the CPU runs at a lower clock speed when an abnormal spike in temperature is detected. The flag is enabled not only when the processor is hot, but can also jump into action if another component in the vicinity of the CPU overheats. It is not clear whether rolling back to the older driver update fixes the issue.

"We are aware of some customers reporting a scenario with their Surface Books where CPU speeds are slowed. We are quickly working to address via a firmware update", a Microsoft spokesperson was quoted as saying by TechRepublic. However, Microsoft is yet to explain what exactly is causing the throttling issue on the Surface Book 2 and the Surface Pro 6 in the first place.

Moreover, it appears that the new driver seeded by the recent firmware updates for Surface devices has also generated some Wi-Fi connectivity issues. As per user complaints on the official Microsoft support forum, the updated Wi-Fi driver arriving with the recent firmware updates severs connectivity with 5GHz networks.

The first-gen Surface Book, Surface Pro Gen 4, and the Surface Pro 6 are among the devices affected by the Wi-Fi issue. Users who reverted back to older drivers were reportedly able to restore normal 5GHz connectivity on their surface device.

Microsoft Surface Book 2 HNL-00001 Laptop

KEY SPECS
NEWS

Display size 13.30-inch

Display resolution 2256x1504 pixels

Touchscreen Yes

Processor Core i7

RAM 16GB

OS Windows 10 Professional

Hard disk No

SSD 512GB

Weight 1.28 kg

Microsoft Surface Firmware Updates Causing Throttling, Wi-Fi Issues: Reports

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Microsoft Surface Pro 6

KEY SPECS
NEWS

Display 12.30-inch

Front Camera 5-megapixel

Resolution 2736x1824 pixels

RAM 8GB

OS Windows 10 Home

Storage 128GB

Rear Camera 8-megapixel

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