> In the previous message to the list, you noted > that your resolution (as noted by xrandr) is 1280x1024. Is > this a simple matter of sending a resolution to the projector > that it doesn't like? Have you tried 1024x768? I tried both 1024x768 and 800x600 but neither works. I get alternating color and white vertical bars in the output. Sometimes it changes to blinking colored rectangular areas. Interestingly, I booted from a Backtrack 2 live CD and started X, and it works no problem. I check the xorg.conf and it lists a HorizSync 31.5 - 150 and a VertRefresh 75 - 85. So, I then tried those values on Debian, but it still doesn't work. I also double-checked the projector model, and I had a typo. It's a Sony VPL-PX41. The specs on it are: Portable TFT Active Matrix LCD Projector Resolution Native: XGA (1024 x 768) Compressed: UXGA (1600 x 1200) Horizontal Scan Rate: 19 - 92 kHz Vertical Scan Rate: 48 - 92 Hz I also tried the Debian system with a Dell E173FPB LCD monitor with the same results; works fine until X is started; works fine with Backtrack 2 CD. ... frustrating.