Hi,

I installed CentOS 5.6 on a Dell Precision Laptop M4600.

This laptop has 2 USB 3 connectors. Nothing work (mouse or usb key...) when I connected something on this 2 ports.

And sound not working on this laptop.

[root@localhost ~]# lspci 00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Sandy Bridge PCI Express Root Port (rev 09) 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation Cougar Point KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b4) 00:1c.2 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 3 (rev b4) 00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b4) 00:1c.7 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 8 (rev b4) 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 04) 00:1f.2 RAID bus controller: Intel Corporation Mobile 82801 SATA RAID Controller (rev 04) 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: nVidia Corporation Device 0dfa (rev a1) 01:00.1 Audio device: nVidia Corporation Device 0bea (rev a1) 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) 0a:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) 0b:00.0 FireWire (IEEE 1394): O2 Micro, Inc. Device 11f7 (rev 05) 0b:00.1 SD Host controller: O2 Micro, Inc. Device 8320 (rev 05) 0b:00.2 Mass storage controller: O2 Micro, Inc. Device 8330 (rev 05) [root@localhost ~]#

Did someone know what to do for sound and for this 2 USB 3.0 connectors ?

Regards.

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