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PCI Express Card Detection or Boot Failure on E3 Notebooks


Table of Contents :

  1. PCI Express Card Detection or Boot Failure on E3 Notebooks


This article provides information PCI Express Card detection issues on the E3 family of notebooks.

E3 family includes E6420, E6520, E5520 ...


1. PCI Express Card Detection or Boot Failure on E3 Notebooks

Customers may report that an E3 notebook hangs during OS boot or card detection fails when a PCI express card is present or inserted after OS load.

This issue has only been reported on Generation 1 PCIe cards.

Root Cause:

The Intel 6 Series Chipset and Intel C200 Series Chipset sets the TS1 Ordered Set – Symbol 4 Bit[6] to 1b, since this bit is used in PCIe 2.0 specification to broadcast support for selectable de-emphasis. PCIe 1.x specification being: "The contents, states, or information are not defined at this time. Using any reserved area (for example, packet header bit-fields and configuration register bits) is not permitted.

Any implementation dependence on a reserved field value or encoding will result in an implementation that is not PCI Express-compliant. The functionality of such an implementation cannot be guaranteed in this or any future revision of this specification"

* PCIe 1.x Specification compliant devices treat this bit as reserved and train correctly when a non-zero value is transmitted from the host controller. These devices thus place no dependencies on a reserved bit per the PCIe 1.x specification.

* Intel has observed a limited number of PCIe 1.x device (x4/x2/x1) that do not handle the TS1 Symbol 4 bit[6] being non-zero correctly and hence fail to train. These devices put a dependency on this bit being zero and cannot handle non-zero values. This violates the PCIe 1.x specification and thus such devices are Non-compliant Devices.

Solution

Replacing hardware will not resolve the issue detailed above
Download and install the latest BIOS release from the Dell Support Website to resolve the issue.






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Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Код статьи: SLN288300

Дата последнего изменения: 09/08/2014 07:48 AM


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