Hi list, i have a Toshiba A100-773 with a Radeon Mobility X1400: # lspci 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400 # rhd_conntest 01:00.0 rhd_conntest: v1.1.0, git branch master, commit 4e488a34 Checking connectors on 0x7145, 0x1179, 0xFF10 (@01:00:00): Load Detection: RHD_OUTPUT_DACA HotPlug: RHD_HPD_NONE DDC: RHD_DDC_1 RHD_DDC_2 LVDS Info: 18bits, single link, LDI Panel found. Power Timing: 0xF9F, 0x00F, 0x03, 0x23, 0x190 Macro: 0x0C720407, Clock Pattern: 0x0063 I have been using radeonhd on my internal display for months without a problem, but now I got an external TFT and cannot get it to work. xrandr tells me the display shows 1680x1050 pixels: # xrandr Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 1680 x 1050 VGA_1 connected 1680x1050+0+0 434mm x 270mm 1680x1050 59.9*+ 60.0 1280x1024 75.0 59.9 1440x900 74.9 60.0 1280x960 59.9 1152x864 75.0 74.9 1024x768 75.1 60.0 832x624 74.6 800x600 75.0 60.3 56.2 640x480 75.0 60.0 720x400 70.1 PANEL connected 1280x800+0+0 331mm x 207mm 1280x800 60.0*+ TV_SVIDEO disconnected DVI-D_1 disconnected 1024x768_60 (0x51) 64.1MHz h: width 1024 start 1080 end 1184 total 1344 skew 0 clock 47.7KHz v: height 768 start 769 end 772 total 795 clock 60.0Hz But nevertheless on the left and right side there are arround 140 pixels missing. :-( I have attached my Xorg.0.log. Please tell me if you need anything more. Thanks for your work so far! greetings Felix Möller