Quote from: z-axis on October 30, 2017, 08:36:38 PM

Hey Everyone,

If you have more than 16 GPUs, the key is to have no more than 16 cards listed in the ServerLayout part of your xorg.conf. Those are the ones that will OC. You will have all 19 listed in the Device and Screen sections and the three that remain will run but won't OC. If you add a 17th under ServerLayout, the miner will not be able to OC any because X will crash when it starts when it hits the 17th card.

If you look at nvidia-smi output, you *should* see, at the bottom an instance of X AND a miner process for each GPU. The ones that only have a miner process attached cannot be OC'd. For me this is GPUs 17, 18, 19.

I've had to edit my rclocal.sh to copy a custom xorg.conf from ~ into /etc/X11 to keep it correct. The problem (for me) is that the script that auto creates the xorg.conf won't stop at 16 in the ServerLayout section and thus makes it so that X won't start and thus none of them OC.

Also, for my Gigabyte P106 cards (I'm running 19) for those first 16 (which will OC), I've not been able to get beyond 100 core and 250 mem, producing 18-18.1 MH/s for ETH only.

Let me know if this helps!
-z

```
# xorg.conf for 19 P106 on Asus ME that gets me 16 OC and 3 non-OC

Section "ServerLayout"
   Identifier "layout"
   Screen 0 "nvidiascreen-00"
   Screen 1 "nvidiascreen-01"
   Screen 2 "nvidiascreen-02"
   Screen 3 "nvidiascreen-03"
   Screen 4 "nvidiascreen-04"
   Screen 5 "nvidiascreen-05"
   Screen 6 "nvidiascreen-06"
   Screen 7 "nvidiascreen-07"
   Screen 8 "nvidiascreen-08"
   Screen 9 "nvidiascreen-09"
   Screen 10 "nvidiascreen-10"
   Screen 11 "nvidiascreen-11"
   Screen 12 "nvidiascreen-12"
   Screen 13 "nvidiascreen-13"
   Screen 14 "nvidiascreen-14"
   Screen 15 "nvidiascreen-15"
   Inactive "intel"
EndSection

Section "Device"
   Identifier "intel"
   Driver "modesetting"
   BusID "PCI:0@0:2:0"
   Option "AccelMethod" "None"
EndSection

Section "Screen"
   Identifier "intel"
   Device "intel"
EndSection

Section "Device"
   Identifier "nvidia-00"
   Driver "nvidia"
   BusID "PCI:1@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-00"
   Device "nvidia-00"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-01"
   Driver "nvidia"
   BusID "PCI:2@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-01"
   Device "nvidia-01"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-02"
   Driver "nvidia"
   BusID "PCI:3@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-02"
   Device "nvidia-02"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-03"
   Driver "nvidia"
   BusID "PCI:6@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-03"
   Device "nvidia-03"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-04"
   Driver "nvidia"
   BusID "PCI:7@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-04"
   Device "nvidia-04"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-05"
   Driver "nvidia"
   BusID "PCI:8@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-05"
   Device "nvidia-05"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-06"
   Driver "nvidia"
   BusID "PCI:9@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-06"
   Device "nvidia-06"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-07"
   Driver "nvidia"
   BusID "PCI:10@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-07"
   Device "nvidia-07"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-08"
   Driver "nvidia"
   BusID "PCI:11@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-08"
   Device "nvidia-08"
   Option "Coolbits" "28"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-09"
   Driver "nvidia"
   BusID "PCI:12@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-09"
   Device "nvidia-09"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-10"
   Driver "nvidia"
   BusID "PCI:13@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-10"
   Device "nvidia-10"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-11"
   Driver "nvidia"
   BusID "PCI:14@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-11"
   Device "nvidia-11"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-12"
   Driver "nvidia"
   BusID "PCI:15@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-12"
   Device "nvidia-12"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-13"
   Driver "nvidia"
   BusID "PCI:16@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-13"
   Device "nvidia-13"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-14"
   Driver "nvidia"
   BusID "PCI:17@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-14"
   Device "nvidia-14"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-15"
   Driver "nvidia"
   BusID "PCI:18@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-15"
   Device "nvidia-15"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-16"
   Driver "nvidia"
   BusID "PCI:19@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-16"
   Device "nvidia-16"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-17"
   Driver "nvidia"
   BusID "PCI:20@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-17"
   Device "nvidia-17"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

Section "Device"
   Identifier "nvidia-18"
   Driver "nvidia"
   BusID "PCI:21@0:0:0"
   Option "ConstrainCursor" "off"
EndSection

Section "Screen"
   Identifier "nvidiascreen-18"
   Device "nvidia-18"
   Option "AllowEmptyInitialConfiguration" "on"
   Option "Coolbits" "28"
   Option "IgnoreDisplayDevices" "CRT"
EndSection

```

Hello,
what version is NVOC, 0019 or 0019 1.2 Huh