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Title: Xubuntu Headless Miner *unable to open display* SOLVED Post by: devz3ro on May 10, 2013, 05:08:20 PM Are you stuck with the dreaded
Code: xhost: unable to open display ":0" After banging my head against the wall for a few hours I figured this out and decided to try and pass the knowledge onto anyone else that may be having a difficult time. My goal was to have a completely headless setup which means: Start the pc with no monitor, keyboard, or mouse plugged in whatsoever and be able to mine. I followed both Xubuntu guides to get bfgminer and the ati drivers installed & enabled (more from the 12.10 one because that had the bfgminer instructions): "Installed - Xubuntu 13.04, Raring Ringtail" 1. https://docs.google.com/document/d/1Gw7YPYgMgNNU42skibULbJJUx_suP_CpjSEdSi8_z9U/preview?sle=true 2. https://docs.google.com/document/d/1a1T3j5Vr5mAmet47VnVfZ2ba4XVQkwLrYarl6PpUs_E/edit The instructions assume you aren't headless. The command that makes it all possible is 'xhost +'. The problem is 'xhost +' from a headless machine gives you something similar to the following (even as root):
miner@rig:~$ xhost + xhost: unable to open display ":0" miner@rig:~$ sudo aticonfig --adapter=all --odgt ERROR - X needs to be running to perform AMD Overdrive(TM) commands miner@rig:~$ miner@rig:~$ cgminer -n [2013-04-18 14:16:18] CL Platform 0 vendor: Advanced Micro Devices, Inc. [2013-04-18 14:16:18] CL Platform 0 name: AMD Accelerated Parallel Processing [2013-04-18 14:16:18] CL Platform 0 version: OpenCL 1.2 AMD-APP (1016.4) [2013-04-18 14:16:18] Error -1: Getting Device IDs (num) [2013-04-18 14:16:18] clDevicesNum returned error, no GPUs usable [2013-04-18 14:16:18] 0 GPU devices max detected But if you run Code: netstat -l What you will need to do is: 1. Install x11vnc Code: sudo apt-get install x11vnc 2. Create a password to connect Code: sudo x11vnc -storepasswd /etc/x11vnc.pass 3. Start it on ":0" referencing your magic cookie Code: sudo /usr/bin/x11vnc -auth /var/run/lightdm/root/:0 -noxrecord -noxfixes -noxdamage -rfbauth /etc/x11vnc.pass -forever -bg -rfbport 5900 -o /tmp/x11vnc.log -display :0 4. Connect to your headless machine via VNC on port 5900 (example using realvnc: 192.168.0.100:5900) 5. Open a terminal via the VNC session and type: Code: xhost + 6. Either connect via ssh and try to run your miner or try to start it via the VNC session. Troubleshooting: If the x11vnc password is giving your problems you can skip step 2 and run this in step 3 (to connect insecurely with no password) Code: sudo /usr/bin/x11vnc -auth /var/run/lightdm/root/:0 -noxrecord -noxfixes -noxdamage -forever -bg -rfbport 5900 -o /tmp/x11vnc.log -display :0 If you are having issues connecting via VNC, you can try the following (although I only used it with tightvncserver): Edit using vi or pico, etc: /home/youruser/.vnc/xstartup Comment out: Code: #/etc/X11/Xsession Add the following to the end of the file: Code: unset SESSION_MANAGER Close & save the file, then issue the following command: Code: sudo coldreboot Please donate LTC if this helped :-) @ LTgWjHtzgkLiXSDDBFdh8XwWJw3x6Hv5qu Title: Re: Xubuntu Headless Miner *unable to open display* SOLVED Post by: devz3ro on May 11, 2013, 04:14:51 AM Here is my current mining script for my 7950 Sapphire 4L (I'm pretty sure shaders and thread-concurrency is redundant, but it works so I'm not messing with it):
#!/bin/bash export GPU_MAX_ALLOC_PERCENT=100 export GPU_USE_SYNC_OBJECTS=1 export DISPLAY=:0 cd ./bfgminer ./bfgminer --scrypt -o stratum+tcp://someminingpool.com:3333 -u worker.1 -p worker --gpu-powertune 20 --gpu-engine 1075 --gpu-memclock 1650 --auto-fan --temp-target 75 --failover-only --shaders 1792 --thread-concurrency 21712 -I 19 --lookup-gap 2 --gpu-vddc 1.012 -g 1 -w 256 Title: Re: Xubuntu Headless Miner *unable to open display* SOLVED Post by: devz3ro on May 17, 2013, 03:45:18 AM Anyone getting the error below using the latest cgminer + Xubuntu:
./cgminer: error while loading shared libraries: libudev.so.0: cannot open shared object file: No such file or directory Try the following: Code: $ sudo apt-get install libudev-dev libudev1 Title: Re: Xubuntu Headless Miner *unable to open display* SOLVED Post by: cooltobe on May 27, 2013, 09:17:09 PM Anyone getting the error below using the latest cgminer + Xubuntu: ./cgminer: error while loading shared libraries: libudev.so.0: cannot open shared object file: No such file or directory Try the following: Code: $ sudo apt-get install libudev-dev libudev1 Thank you devz3ro Title: Re: Xubuntu Headless Miner *unable to open display* SOLVED Post by: devz3ro on June 19, 2013, 08:23:30 AM Thank you devz3ro Not a problem, glad I was able to help! |