Hi, I'm tyring to connect a HFI card to an Omni-Path Edge Switch 100. The switch detects the QSFP just fine: Cable05 OEM Copper 3 meter 20.87 ??? MCP1600-E003-C 6 M9AL0003 Valid But on the host side, I only get: [ 53.060613] hfi1 0000:01:00.0: hfi1_0: wait_for_qsfp_init: No IntN detected, reset complete [ 53.082820] hfi1 0000:01:00.0: hfi1_0: i2c_bus_write: bus 1, i2c slave 0x50, offset 0x7f, len 0x1; write failed, ret -6 [ 53.114661] hfi1 0000:01:00.0: hfi1_0: port 1: QSFP chain 1 can't write QSFP_PAGE_SELECT_BYTE: -6 [ 53.137353] hfi1 0000:01:00.0: hfi1_0: QSFP not responding, waiting and retrying 0 Any hint why the card doesn't find the plugged in QSFPs ? Thomas. -- SUSE Linux GmbH GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html