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9–Troubleshooting Guidelines
Caveats
NE0154601-00 A 9-5
The QLogic vendor ID is 0x4040. A list of QLogic adapter device IDs is listed
in Table 9-3.
Determine the interface attributes. To determine the attributes of the
interface, type the following command:
% lspci -n -d 4040:0100 -vvv | grep -i width
You should see a message similar to:
Link: Supported Speed 2.5 Gb/s, Width x8, ASPM L0s, Port 0
Link: Speed 2.5Gb/s, Width x8
Determine the width parameters. Check if the lspci output “negotiated
width” (the second width in the output) reflects the actual “supported width”.
In an system with a QLE3044, for example, type the following command to
determine if these two widths are the same:
% lspci -xxx -vvv -d 4040:0100
In the previous command, 4040 indicates the QLogic vendor ID and 0124
indicates a QLE3044. The device ID is 0126.
Examine the following hex output:
Table 9-3. QLogic Adapter Device IDs
Product Device ID Description
QLE3044 0124 Quad-port 1GbE copper interface
QLE3142-CU 0126 Dual-port 10GbE with twinax interface
QLE3142-SR 0126 Dual-port 10GbE with short range fiber interface
QLE3142-LR 0126 Dual-port 10GbE with long range fiber interface
...... 82 04 00 00 01 00 82
Supported
link width
Negotiated
link width