I am running into a problem on my Nvidia DevBox CUDA 7.5 install on Centos7 where only 3 out of the 4 total GPUs get recognized correctly.
lspci shows 4 cards nvidia correctly and I have blacklisted nouveau drivers. However, nvidia-smi gives error that says insufficient power (I actually plugged it into a more powerful socket and guess its not the issue).
nvidia-smi -L gives the first 3 graphics card correctly and returns the above error on the last graphics card.
X-serv works in both the 352.39 driver CUDA 7.5 came with as well as 352.63 driver (I thought it was a driver issue but it seems not the case).
In my nvidia settings, I can see 3 drivers correctly recognized, but I just cant get the last one to work! As a result I cant run theano…
dmesg gives rmInitadapater error on 0a:00.0 pci slot containing the titan x card.
Any help would be welcome!