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Spurious STALL packets - Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)


lspci | grep -i usb

00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)

We are having Linux-Servers with Intel USB2 EHCI chipset. When I connect the Bluetooth Dongle’s(Full-Speed), I see repeatedly spurious STALL packets.

FRSTOR Floating-Point Exceptions

I am writing an RTOS and I have some questions about Floating-Point Exceptions generated by the FRSTOR instruction.

The Intel® 64 and IA-32 Architectures Software Developer’s Manual  Volume 2 says that the FRSTOR instruction "might unmask an existing exception that has been detected but not generated, because it was masked. Here, the exception is generated at the completion of the instruction." I have 2 questions related to this:

1) What address will the EIP be when the exception occurs (the FRSTOR instruction or next instruction)?

Display Device Horizontal and Vertical Scaling Question


I'm kinda new here, so I'm just gonna cut to the chase. I'd just like to ask what IGFX structure was used in setting/getting the value of Horizontal and Vertical Scaling (Customize Aspect Ratio) in Intel Graphics and Media Control Panel?

I tried IGFX_DISPLAY_CONFIG_1_1 structure but it always returns IGFX_FAILURE.

Please have comments and advise.



device for get harware error from motherboard

Tell me please device for diagnosing or receiving error codes from the motherboard of the server (for example, intel s2600j. Ideal universal tool)
It necessary if not possible to boot the server. For example if some memory module have bug or something else.

When you see a black screen, the server becomes a black box. May be exists any something device for diagnostics / receive errors in this situation?

Or tell me where to look.

Thanks for your time

3D engine

Hello there,

ok, here we go, I have a dream, make a 3D engine 100% assembler intel only with CPU, I use rotation matrix only for now.

it works of course, but it's slow when I put a lot of pixels.

Recently I decided to include voxels in my engine, and it's slow when I put> = 8000 voxels (20 * 20 * 20 cube) and when I saw that nvidia display 32M voxels (fire) I wonder how they can do it !

And I have a little idea of  the reason: MMU, paging, segmentation. memory.
Am I right?

Programmatically access intel gpu stats

I am writing a powershell script that gets cpu, memory, network, and gpu information over a period of time. I can access everything except gpu information for intel products because they do not supply a powershell class for this (As far as I can tell). I am wondering how I can get this information. Powershell commands would be most useful, but at this point I'll try anything. Please note that this needs to be done many times so looking at a GUI is out of the question. The machine I'm testing on uses an Intel Iris PG 5200 if that matters.

Component based liquid cooling

Hello all.


First of all sorry for posting here, but it is due to a lack of other forums which cover the area of interest related to my questions.


I am developing a server system for a specific industrial environment with poor air quality, fluctuating temperatures and humidity and scarce climate control. I am investigating the possibilities for building an air-tight high performance and fully redundant server system for virtualization with the focus on high availability critical (actual life and death) applications.


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