{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12183","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12183/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12183/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12183/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/12183","id":372357382,"node_id":"MDU6SXNzdWUzNzIzNTczODI=","number":12183,"title":"Strange G26 behaviour with bugfix-2.0.x","user":{"login":"cdedwards","id":2271505,"node_id":"MDQ6VXNlcjIyNzE1MDU=","avatar_url":"https://avatars3.githubusercontent.com/u/2271505?v=4","gravatar_id":"","url":"https://api.github.com/users/cdedwards","html_url":"https://github.com/cdedwards","followers_url":"https://api.github.com/users/cdedwards/followers","following_url":"https://api.github.com/users/cdedwards/following{/other_user}","gists_url":"https://api.github.com/users/cdedwards/gists{/gist_id}","starred_url":"https://api.github.com/users/cdedwards/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cdedwards/subscriptions","organizations_url":"https://api.github.com/users/cdedwards/orgs","repos_url":"https://api.github.com/users/cdedwards/repos","events_url":"https://api.github.com/users/cdedwards/events{/privacy}","received_events_url":"https://api.github.com/users/cdedwards/received_events","type":"User","site_admin":false},"labels":[{"id":91739409,"node_id":"MDU6TGFiZWw5MTczOTQwOQ==","url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Bug:%20Potential%20?","name":"Bug: Potential ?","color":"f9d0c4","default":false},{"id":366367082,"node_id":"MDU6TGFiZWwzNjYzNjcwODI=","url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/F:%20Calibration","name":"F: Calibration","color":"3cc9c9","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2018-10-21T21:10:55Z","updated_at":"2018-10-28T02:43:54Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"I enabled UBL on my Cube printer and started the Step By Step UBL from the menu. G29 P1, G29 to fill in the mesh, and then G29 S1 to save it.. When I attempt to Validate the mesh, I run into an issue. G26 heats the bed/extruder and then attempts to prime the nozzle. I find that my Y motors are being driven backwards slowly instead of the nozzle pumping out any filament.. At this point my display is also frozen and I can't press a button either. \r\n\r\nI changed the heater temp's to 195 and 65 to match what I normally use. Preheat the bed and hotend up to temperature. and enter G26 C B70 H195 P1  to start the mesh validation. instant reboot of the mega2560."},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/433671566","html_url":"https://github.com/MarlinFirmware/Marlin/issues/12183#issuecomment-433671566","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12183","id":433671566,"node_id":"MDEyOklzc3VlQ29tbWVudDQzMzY3MTU2Ng==","user":{"login":"cdedwards","id":2271505,"node_id":"MDQ6VXNlcjIyNzE1MDU=","avatar_url":"https://avatars3.githubusercontent.com/u/2271505?v=4","gravatar_id":"","url":"https://api.github.com/users/cdedwards","html_url":"https://github.com/cdedwards","followers_url":"https://api.github.com/users/cdedwards/followers","following_url":"https://api.github.com/users/cdedwards/following{/other_user}","gists_url":"https://api.github.com/users/cdedwards/gists{/gist_id}","starred_url":"https://api.github.com/users/cdedwards/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cdedwards/subscriptions","organizations_url":"https://api.github.com/users/cdedwards/orgs","repos_url":"https://api.github.com/users/cdedwards/repos","events_url":"https://api.github.com/users/cdedwards/events{/privacy}","received_events_url":"https://api.github.com/users/cdedwards/received_events","type":"User","site_admin":false},"created_at":"2018-10-28T02:43:54Z","updated_at":"2018-10-28T02:43:54Z","author_association":"CONTRIBUTOR","body":"I just enabled UBL on a friends Tevo Tornado for him. Attempted to run G26 again on his printer and found that it was printing very strange as the Z would go up and down instead of Y from the look of it. As for my printer, I reduced the number of points in the mesh which got me to the same point almost. It now starts the G26, but my Z is moving up and down and eventually it reboots after a couple of circles."}}
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