The TV monitor when fed through HDMI prefers TV mode (overscan) by default. It needs to be fed a 1920x1080 signal with CVT-RB timing to display 1:1 pixels. The kernel parameter to use is (for linux framebuffer) video=1920x1080RM@60 Note: this is for kernel 2.6.39-bpo.2 (from Debian backports). In newer versions it seems that the R and M should be switched: "1920x1080MR@60". As always, use the source. For X11, these xrandr invocations should help. TODO: put this in xorg.conf xrandr --newmode "1920x1080R@60" 138.50 1920 1968 2000 2080 1080 1083 1088 1111 +hsync -vsync xrandr --addmode HDMI4 "1920x1080R@60" xrandr --output HDMI4 --mode "1920x1080R@60" The timings can be obtained from the cvt utility: cvt -r 1920 1080 60 |
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