Hello, since upgrading to Kernel 4.6, I experienced weird display delay issues on my Thinkpad x250. Downgrading to 4.5 or disabling fbc both fix that issue. In some specific X software (and only in those), modifications in UI display (e.g. keyboard input) is shown with a delay up to ~1s. Programs where I experienced this behaviour are e.g. sakura, wireshark-qt and sublime. This affects other Arch Linux users as well: https://bugs.archlinux.org/task/49623 There is also a little more information on this. If you can tell me what logs/analysis might be useful for you, I am happy to provide it to you, although I am not that experienced with this stuff. -- Grüße/Regards Manuel Groß
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