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I've got a Thinkpad X260 with an Intel GPU. The external screen (resolution 3440x1440) switches off and on for half/one second infrequently. Neither Xorg log nor journalctl have anything related to them.
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And dmesg?
Tried different cables, different connection port, different screen...?
Any troubleshooting?
There's nothing to help if you cannot provide any information about the problem.
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