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Unusual laptop problems? Could your CPU lanes be getting overloaded?

Unusual laptop problems? Could your CPU lanes be getting overloaded?

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trigger_fourth
Junior Member
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27
11-12-2016, 07:35 PM
#1
I own a Dell Precision 7530 equipped with an i9-8950HK processor, boasting 16 PCIe lanes as listed on Intel's site. The system includes 64GB RAM spread across four modules, a Quadro P2000 graphics card, three M.2 NVMe drives, an external GPU connected via Thunderbolt 3, and several peripherals powered through a USB hub (Logitech keyboard, mouse, CD/DVD drive, and one USB hard drive). I've encountered problems where my USB devices intermittently disconnect and reconnect, sounding like the USB controller is resetting. My audio output becomes distorted, and when my keyboard functions, it feels like keys are being sucked in briefly. I've switched hubs and peripherals without resolving the issue. After installing Windows 1803 and 1909 multiple times, flipping firmware versions, and even receiving a replacement board from Dell—which I used without success—I still face these inconsistencies. My older Dell 5510 with a similar setup but stripped of internal parts is running smoothly for weeks. I’m unsure if I’m exceeding the CPU’s lane capacity or if there’s another factor at play. There’s no official documentation for the system board detailing lane assignments or bandwidth usage. I ran a lspci command and reviewed the output, but I’m seeking advice from more experienced users to pinpoint the problem. lspci.txt
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T
trigger_fourth
11-12-2016, 07:35 PM #1

I own a Dell Precision 7530 equipped with an i9-8950HK processor, boasting 16 PCIe lanes as listed on Intel's site. The system includes 64GB RAM spread across four modules, a Quadro P2000 graphics card, three M.2 NVMe drives, an external GPU connected via Thunderbolt 3, and several peripherals powered through a USB hub (Logitech keyboard, mouse, CD/DVD drive, and one USB hard drive). I've encountered problems where my USB devices intermittently disconnect and reconnect, sounding like the USB controller is resetting. My audio output becomes distorted, and when my keyboard functions, it feels like keys are being sucked in briefly. I've switched hubs and peripherals without resolving the issue. After installing Windows 1803 and 1909 multiple times, flipping firmware versions, and even receiving a replacement board from Dell—which I used without success—I still face these inconsistencies. My older Dell 5510 with a similar setup but stripped of internal parts is running smoothly for weeks. I’m unsure if I’m exceeding the CPU’s lane capacity or if there’s another factor at play. There’s no official documentation for the system board detailing lane assignments or bandwidth usage. I ran a lspci command and reviewed the output, but I’m seeking advice from more experienced users to pinpoint the problem. lspci.txt

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M
mishy07
Senior Member
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371
11-13-2016, 02:32 AM
#2
Did you test the external GPU together with the old laptop? All the external components are linked to the chipset, resulting in limited speed (the GPU can reach the chipset bandwidth without much difficulty)
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mishy07
11-13-2016, 02:32 AM #2

Did you test the external GPU together with the old laptop? All the external components are linked to the chipset, resulting in limited speed (the GPU can reach the chipset bandwidth without much difficulty)

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K
Keleg
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149
11-15-2016, 03:05 AM
#3
Typically laptop GPUs operate at x8 to conserve bandwidth, ensuring you retain a minimum of 8 lanes for two NVMe storage drives.
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K
Keleg
11-15-2016, 03:05 AM #3

Typically laptop GPUs operate at x8 to conserve bandwidth, ensuring you retain a minimum of 8 lanes for two NVMe storage drives.

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AdamDrong
Junior Member
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31
11-15-2016, 01:20 PM
#4
Same eGPU and card are working fine with the old laptop. It’s using an internal Quadro M100M GPU, while the new laptop has a different one called Quadro P2000. I’m not sure if there’s a significant difference between the two.
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AdamDrong
11-15-2016, 01:20 PM #4

Same eGPU and card are working fine with the old laptop. It’s using an internal Quadro M100M GPU, while the new laptop has a different one called Quadro P2000. I’m not sure if there’s a significant difference between the two.

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G
Grace8200
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58
11-22-2016, 07:21 AM
#5
You're using an eGPU over Thunderbolt 3, likely with four lanes total. It's unclear if the two 2TB ports share those lanes or if they're separate. Adding three M.2 drives probably requires more lanes, so check how your internal GPU handles the bandwidth.
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G
Grace8200
11-22-2016, 07:21 AM #5

You're using an eGPU over Thunderbolt 3, likely with four lanes total. It's unclear if the two 2TB ports share those lanes or if they're separate. Adding three M.2 drives probably requires more lanes, so check how your internal GPU handles the bandwidth.

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