{"action":"created","issue":{"url":"https://api.github.com/repos/olikraus/u8g2/issues/680","repository_url":"https://api.github.com/repos/olikraus/u8g2","labels_url":"https://api.github.com/repos/olikraus/u8g2/issues/680/labels{/name}","comments_url":"https://api.github.com/repos/olikraus/u8g2/issues/680/comments","events_url":"https://api.github.com/repos/olikraus/u8g2/issues/680/events","html_url":"https://github.com/olikraus/u8g2/issues/680","id":350920453,"node_id":"MDU6SXNzdWUzNTA5MjA0NTM=","number":680,"title":"Suddenly blank display","user":{"login":"mkovero","id":22191732,"node_id":"MDQ6VXNlcjIyMTkxNzMy","avatar_url":"https://avatars1.githubusercontent.com/u/22191732?v=4","gravatar_id":"","url":"https://api.github.com/users/mkovero","html_url":"https://github.com/mkovero","followers_url":"https://api.github.com/users/mkovero/followers","following_url":"https://api.github.com/users/mkovero/following{/other_user}","gists_url":"https://api.github.com/users/mkovero/gists{/gist_id}","starred_url":"https://api.github.com/users/mkovero/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mkovero/subscriptions","organizations_url":"https://api.github.com/users/mkovero/orgs","repos_url":"https://api.github.com/users/mkovero/repos","events_url":"https://api.github.com/users/mkovero/events{/privacy}","received_events_url":"https://api.github.com/users/mkovero/received_events","type":"User","site_admin":false},"labels":[{"id":283298343,"node_id":"MDU6TGFiZWwyODMyOTgzNDM=","url":"https://api.github.com/repos/olikraus/u8g2/labels/question","name":"question","color":"cc317c","default":true}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2018-08-15T18:43:20Z","updated_at":"2018-08-25T21:59:25Z","closed_at":"2018-08-21T20:57:41Z","author_association":"NONE","body":"Hi, first of all thanks for your excellent work, I thought asking here if anyone happens to know where to look, basic chinese SSD1306 OLED previously worked fine with arduino is having problems with teensy 3.5 now.\r\nDisplay first initializes fine but roughly after 15sec it turns blank / turns off.\r\n\r\nThis happens with example sketch too, for example:\r\n\r\n```\r\n#include <Arduino.h>\r\n#include <SPI.h>\r\n#include <U8g2lib.h>\r\n\r\n\r\nU8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, 13, 11, 10, 9, 5);\r\n\r\nvoid setup(void) {\r\n  u8g2.begin();\r\n}\r\n\r\nvoid loop(void) {\r\n  u8g2.clearBuffer();\r\n    u8g2.setFont(u8g2_font_ncenB14_tr);\r\n    u8g2.drawStr(0,15,\"Hello World!\");\r\n  u8g2.sendBuffer();\r\n  delay(1000);\r\n}\r\n```\r\n\r\nAlso VCOMH0/ALT0 variations work and behave similarly.\r\nAnyone know whether this might be signaling issue (5v on arduino worked fine and 3.3v on teensy not being enough for CS/RST?), if so, would it be possible to workaround preferably without using logic level changers.\r\nI have analog discovery 2 on my disposal so I can dig deeper I just would wish to know where to start looking.\r\n\r\nTyvm!:)"},"comment":{"url":"https://api.github.com/repos/olikraus/u8g2/issues/comments/415999230","html_url":"https://github.com/olikraus/u8g2/issues/680#issuecomment-415999230","issue_url":"https://api.github.com/repos/olikraus/u8g2/issues/680","id":415999230,"node_id":"MDEyOklzc3VlQ29tbWVudDQxNTk5OTIzMA==","user":{"login":"mkovero","id":22191732,"node_id":"MDQ6VXNlcjIyMTkxNzMy","avatar_url":"https://avatars1.githubusercontent.com/u/22191732?v=4","gravatar_id":"","url":"https://api.github.com/users/mkovero","html_url":"https://github.com/mkovero","followers_url":"https://api.github.com/users/mkovero/followers","following_url":"https://api.github.com/users/mkovero/following{/other_user}","gists_url":"https://api.github.com/users/mkovero/gists{/gist_id}","starred_url":"https://api.github.com/users/mkovero/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mkovero/subscriptions","organizations_url":"https://api.github.com/users/mkovero/orgs","repos_url":"https://api.github.com/users/mkovero/repos","events_url":"https://api.github.com/users/mkovero/events{/privacy}","received_events_url":"https://api.github.com/users/mkovero/received_events","type":"User","site_admin":false},"created_at":"2018-08-25T21:59:25Z","updated_at":"2018-08-25T21:59:25Z","author_association":"NONE","body":"for future reference, this was signal issue, RES wire was having bad time."}}
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