{"action":"created","issue":{"url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/580","labels_url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/580/labels{/name}","comments_url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/580/comments","events_url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/580/events","html_url":"https://github.com/Bumblebee-Project/Bumblebee/issues/580","id":33147966,"number":580,"title":"Cannot access secondary GPU:  [drm] failed to set drm interface version: Permission denied","user":{"login":"timfayz","id":6209197,"avatar_url":"https://avatars.githubusercontent.com/u/6209197?v=3","gravatar_id":"","url":"https://api.github.com/users/timfayz","html_url":"https://github.com/timfayz","followers_url":"https://api.github.com/users/timfayz/followers","following_url":"https://api.github.com/users/timfayz/following{/other_user}","gists_url":"https://api.github.com/users/timfayz/gists{/gist_id}","starred_url":"https://api.github.com/users/timfayz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timfayz/subscriptions","organizations_url":"https://api.github.com/users/timfayz/orgs","repos_url":"https://api.github.com/users/timfayz/repos","events_url":"https://api.github.com/users/timfayz/events{/privacy}","received_events_url":"https://api.github.com/users/timfayz/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":48,"created_at":"2014-05-09T06:04:13Z","updated_at":"2015-12-27T18:11:21Z","closed_at":"2015-02-20T12:17:57Z","body":"I have the common issue. When I try to run something through `optirun`, I get the following:\r\n```\r\n[13395.278406] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13].\r\n[13395.278522] [ERROR]Aborting because fallback start is disabled.\r\n```\r\n\r\n**Specification:**\r\n- Ubuntu 14.04\r\n- NVIDIA Corporation GF108M [GeForce GT 630M] (rev a1)\r\n- Nvidia 331 driver\r\n\r\nI've tried to reinstall nvidia and bumblebee packages, to remove something related with nvidia within `/usr/share/X11/xorg.conf.d`, uncomment BudID in the `xorg.conf.nvidia` file\r\n\r\n**optirun -vv --debug bush**\r\n[13077.093918] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf\r\n[13077.094673] [DEBUG]optirun version 3.2.1 starting...\r\n[13077.094690] [DEBUG]Active configuration:\r\n[13077.094698] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf\r\n[13077.094705] [DEBUG] X display: :8\r\n[13077.094711] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-331:/usr/lib32/nvidia-331\r\n[13077.094717] [DEBUG] Socket path: /var/run/bumblebee.socket\r\n[13077.094723] [DEBUG] Accel/display bridge: auto\r\n[13077.094728] [DEBUG] VGL Compression: proxy\r\n[13077.094734] [DEBUG] VGLrun extra options: \r\n[13077.094740] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus\r\n[13077.094813] [DEBUG]Using auto-detected bridge primus\r\n[13079.358358] [INFO]Response: No - error: [XORG] (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13].\r\n[13079.358418] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13].\r\n[13079.358428] [DEBUG]Socket closed.\r\n[13079.358457] [ERROR]Aborting because fallback start is disabled.\r\n[13079.358465] [DEBUG]Killing all remaining processes.\r\n\r\nWhat is wrong?"},"comment":{"url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/comments/167432113","html_url":"https://github.com/Bumblebee-Project/Bumblebee/issues/580#issuecomment-167432113","issue_url":"https://api.github.com/repos/Bumblebee-Project/Bumblebee/issues/580","id":167432113,"user":{"login":"ArchangeGabriel","id":490531,"avatar_url":"https://avatars.githubusercontent.com/u/490531?v=3","gravatar_id":"","url":"https://api.github.com/users/ArchangeGabriel","html_url":"https://github.com/ArchangeGabriel","followers_url":"https://api.github.com/users/ArchangeGabriel/followers","following_url":"https://api.github.com/users/ArchangeGabriel/following{/other_user}","gists_url":"https://api.github.com/users/ArchangeGabriel/gists{/gist_id}","starred_url":"https://api.github.com/users/ArchangeGabriel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ArchangeGabriel/subscriptions","organizations_url":"https://api.github.com/users/ArchangeGabriel/orgs","repos_url":"https://api.github.com/users/ArchangeGabriel/repos","events_url":"https://api.github.com/users/ArchangeGabriel/events{/privacy}","received_events_url":"https://api.github.com/users/ArchangeGabriel/received_events","type":"User","site_admin":false},"created_at":"2015-12-27T18:11:21Z","updated_at":"2015-12-27T18:11:21Z","body":"On kernel version lower than 3.19 you indeed need the `rcutree.rcu_idle_gp_delay=1` kernel parameter. No longer needed as of 3.19."}}