Re: [trinity-users] Configuring two monitors connected to the same computer

Ken Heard composed on 2015-12-22 15:22 (UTC+0700): So do I. :-) This is its motherboard: http://us.msi.com/product/motherboard/B85-G41-PC-Mate.html What's yours? At least, tell which chipset and video you have via lspci output. Mine has one each of VGA, DVI and HDMI. Again do I. :-) Diagonal of my 1680x1050 connected via VGA cable is 56cm. Diagonal of my 1920x1080 connected by DVI to PC and HDMI to TV is 80cm. Can't say for sure why, but based on my experience, it should be a surmountable problem. Possibly HDCP is affecting behavior, or the HDMI cable. Have you tried any other cables? Cheaper HDMI cables are often a cause of otherwise inexplicable trouble. What's likely to be happening here is that the TV does not support the lower 1600x900 mode that Xorg automatically uses without being told otherwise for the larger resolution screen, so both falls back to a lower mode, and displays that mode without stretching, confining to the pixels on the 1920x1080 screen matching the actual mode used. If there is a video mode dictated on the kernel's cmdline (from bootloader), Xorg could be using it, as the Intel driver will do so unless told by xrandr or xorg.conf* to do otherwise. IME, black/blank space is always at either bottom or right, but only in a screenshot, not on the screen output. Sounds like neither display is being run in native mode. What is output from 'cat /proc/cmdline'? The whole of /var/log/Xorg.0.log may provide additional useful info. Using TDE controls I've never tried. I always trust Xorg configuration to get screens the way I want them. Here are two such ways: Over/Under: http://fm.no-ip.com/SS/KDE/tdeDesktop-1920x2130x120viaXrandr-iHaswell.jpg Side by side: http://fm.no-ip.com/SS/KDE/tdeDesktop-3600x1080x120viaXorgdotconf-iHaswell.… In the over/under you can see the xrandr command responsible in the Konsole windows (and from whence it came, a personal creation). For the side by side I used this xorg.conf instead of xrandr: http://fm.no-ip.com/Share/Linux/xorg.conf-intel-vga1680x1050left-digi1920x1… Of course the disparity between my screen sizes and yours are smaller, but they do have different native resolutions, and principles in controlling them are the same. Note that in both my configurations I have forced logical DPI to a value that suits my needs. Via xrandr there are two ways to do this, --dpi and --fbmm. In xorg.conf, DisplaySize controls it. You can pick one that best suits your environment and display size disparity. If you don't, DPI will be forced to 96 on the lower resolution screen, and fall where happenstance puts it on the larger. Here's a file with examples, saving the trouble of calculating sizes to achieve many DPI possibilities: http://fm.no-ip.com/Share/Linux/DisplaySize This is the web URL shown in the Firefox and SeaMonkey windows: http://fm.no-ip.com/Auth/dpi-screen-window.html This is the script responsible for the output shown in the Konsole windows: http://fm.no-ip.com/Share/Linux/xfetch.sh Hope this helps! -- "The wise are known for their understanding, and pleasant words are persuasive." Proverbs 16:21 (New Living Translation) Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/