Hello, since Kernel 4.6, the fbc is broken for me. Some specific X software (e.g. wireshark-qt, sakura and sublime) display UI modifications, such as keyboard input, with a delay up to ~1s. Either downgrading to 4.5 or disabling fbc solve this problem. This affects at least multiple Thinkpad and other users on Arch Linux: https://bugs.archlinux.org/task/49623 I am no expert in this. So if I could provide anything more useful for you, please let me know. -- Grüße/Regards Manuel Groß _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx