If 'lspci -nn' in Linux Terminal doesn't list it, then it is not working/not there.
Are you certain the card is not defective?
I'm sure the card is fine, just tested few minutes ago again on my other customac.
Here's the result when the card is installed and run 'lspci -nn' in terminal
Is there any info in there? I can't recognize it.
Tim:~ Timothy$ lspci -nn
pcilib: 0000:04:00.0 64-bit device address ignored.
pcilib: 0000:04:00.0 64-bit device address ignored.
pcilib: 0000:01:00.0 64-bit device address ignored.
00:00.0 Host bridge [0600]: Intel Corporation Unknown device [8086:0100] (rev 09)
00:01.0 PCI bridge [0604]: Intel Corporation Unknown device [8086:0101] (rev 09)
00:16.0 Communication controller [0780]: Intel Corporation Unknown device [8086:1c3a] (rev 04)
00:1a.0 USB Controller [0c03]: Intel Corporation Unknown device [8086:1c2d] (rev 05)
00:1b.0 Audio device [0403]: Intel Corporation Unknown device [8086:1c20] (rev 05)
00:1c.0 PCI bridge [0604]: Intel Corporation Unknown device [8086:1c10] (rev b5)
00:1c.1 PCI bridge [0604]: Intel Corporation Unknown device [8086:1c12] (rev b5)
00:1c.2 PCI bridge [0604]: Intel Corporation Unknown device [8086:1c14] (rev b5)
00:1c.3 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev b5)
00:1d.0 USB Controller [0c03]: Intel Corporation Unknown device [8086:1c26] (rev 05)
00:1f.0 ISA bridge [0601]: Intel Corporation Unknown device [8086:1c46] (rev 05)
00:1f.2 SATA controller [0106]: Intel Corporation Unknown device [8086:1c02] (rev 05)
00:1f.3 SMBus [0c05]: Intel Corporation Unknown device [8086:1c22] (rev 05)
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Unknown device [1002:6739]
01:00.1 Audio device [0403]: ATI Technologies Inc Unknown device [1002:aa88]
03:00.0 USB Controller [0c03]: NEC Corporation Unknown device [1033:0194] (rev 04)
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)
05:00.0 PCI bridge [0604]: Integrated Technology Express, Inc. Unknown device [1283:8892] (rev 10)