>>raw data drawn from a PCI inspection ..... >> >>$ sudo setpci -s 00:18.3 e4.B=7a >> >> > >So you are not setting this as the reg value but this is just a result (7a) > > No, that command *writes* 7A to PCI space register offset E4. >>$ sudo lspci -s 00:18.3 -xxx >>00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control >>e0: 00 00 00 00 7a 20 28 00 19 17 00 00 00 00 00 00 >> >> Which values are of interest here? Do you know that you can read PCI space using setpci like so: [root at beluga ~]# setpci -v -s 00:18.3 e4.b e4.w e6.w 00:18.3:e4 = 20 00:18.3:e4 = 0f20 00:18.3:e6 = 164c
