https://bugzilla.kernel.org/show_bug.cgi?id=34772
--- Comment #8 from Andreas Schwab schwab@linux-m68k.org 2011-05-20 20:58:03 --- radeon.dynclks=1 causes the wrong resolution to be selected. It thinks something is conncted to the S-video port with a max resolution of 800x600, so it selects this instead of the native resolution (1024x768).
-<6>Console: switching to colour frame buffer device 128x48 +<6>[drm] crtc 1 is connected to a TV +<6>Console: switching to colour frame buffer device 100x37
+(II) RADEON(0): Printing probed modes for output S-video +(II) RADEON(0): Modeline "800x600"x59.9 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync (37.4 kHz) +(II) RADEON(0): Modeline "640x480"x59.9 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz) +(II) RADEON(0): Modeline "320x240"x60.1 12.59 320 328 376 400 240 245 246 262 doublescan -hsync -vsync (31.5 kHz) (II) RADEON(0): Output LVDS connected (II) RADEON(0): Output VGA-0 disconnected -(II) RADEON(0): Output S-video disconnected +(II) RADEON(0): Output S-video connected (II) RADEON(0): Using exact sizes for initial modes -(II) RADEON(0): Output LVDS using initial mode 1024x768 +(II) RADEON(0): Output LVDS using initial mode 800x600 +(II) RADEON(0): Output S-video using initial mode 800x600