so i received some new risers today and installed gpu 6 and 7.
On boot i get low graphics error, so i check the log and amdgpu-pro detects all 7 gpu.
However there is a error in the log
"
Segmentation fault at address 0x0
Caught Signal 11(segmentation fault), Server aborting
"
So i tried a few things that i found online including a fresh install of ubuntu
fresh install ubuntu
amdgpu-pro driver install
reboot
error: low graphic
any ideas what i can do about this
That’s a null pointer dereference (i.e. bug). The quote doesn’t tell which process crashed but presumably it is the X server. Look through dmesg and /var/log/Xorg.0.log to see if there’s anything useful just before the segfault. Also, if you haven’t done it already, remove all GPUs and add them back in one at a time to see if a specific one of them triggers the problem, or if it is always the 7th card to be added that kills it.
i had 5 cards running without issues, adding card 6 and 7 produces the problem
i can ad any card up to 5 cards in random slots with or without risers(3 cards on board and 2 risers) and the system runs flawless
adding a 6th card to the system produces the problem
power shouldn’t be the problem evga 1600 T2
MSI z97 gaming 5 board with intel i3 cpu and 16 gig ram
i did choose that board as someone else has the same board and at least 6 cards running
u can login with ssh. just kick the miner.
ok so general question
if i just install ubuntu or debian, do i still need to install the amdgpu-pro driver if i start the miner without the gui?
yes, you need it. you don’t need gui.
instruction here
i am not to familiar with linux but as i understand it, that error has to do with the gui
could you point me how to start ubuntu on boot without the gui
sudo apt-get remove lightdm
and i get to boot without gui
without gui optiminer works on all 7 rx480
but i think with low sol for 7 cards (~780sol)
i will wait a bit to see if it goes up
u don need uninstall gui.
anyways happy mining!!
thanks for the help
i think the miner is dropping a gpu
might be a faulty gpu or again a riser defective
back to square 1
Those who have the problem, you use the video gpu integrated in the motherboard?
well after almost 2 days testing i got a hint (thanks cryptomined) that the bios could have reset itself and sure enough it had
setting back to gen2 / 8x4x4x and the system is running fine with all 7 cards working
still can’t get into the gui but i don’t need the gui so all good
happy now lol
Topic was solved, future posts should be in AMD Thread