Example lines from my Xorg.0.log below, showing the framebuffer resizing. Note that both screens are attached to the PC permanently, so there should never be a need to resize.
[308422.419] (II) intel(0): resizing framebuffer to 1920x1080
[308422.430] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 1, position (0, 0), rotation normal, reflection none
[308425.578] (II) intel(0): resizing framebuffer to 3840x1093
[308425.607] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 1, position (1920, 0), rotation normal, reflection none
[308425.609] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI2 using pipe 0, position (0, 13), rotation normal, reflection none
[308447.488] (II) intel(0): resizing framebuffer to 1920x1080
[308447.498] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 0, position (0, 0), rotation normal, reflection none
[308447.829] (II) intel(0): resizing framebuffer to 3840x1093
[308447.844] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 0, position (1920, 0), rotation normal, reflection none
[308447.852] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI2 using pipe 1, position (0, 13), rotation normal, reflection none
Example lines from my Xorg.0.log below, showing the framebuffer resizing. Note that both screens are attached to the PC permanently, so there should never be a need to resize.
[308422.419] (II) intel(0): resizing framebuffer to 1920x1080
[308422.430] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 1, position (0, 0), rotation normal, reflection none
[308425.578] (II) intel(0): resizing framebuffer to 3840x1093
[308425.607] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 1, position (1920, 0), rotation normal, reflection none
[308425.609] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI2 using pipe 0, position (0, 13), rotation normal, reflection none
[308447.488] (II) intel(0): resizing framebuffer to 1920x1080
[308447.498] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 0, position (0, 0), rotation normal, reflection none
[308447.829] (II) intel(0): resizing framebuffer to 3840x1093
[308447.844] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI1 using pipe 0, position (1920, 0), rotation normal, reflection none
[308447.852] (II) intel(0): switch to mode 1920x1080@60.0 on HDMI2 using pipe 1, position (0, 13), rotation normal, reflection none