I've just replaced my old trusty crt with a new LCD intending to get as long us of the new sceen as I had of the old one. Unfortunately the image of the new LCD under Linux is very bad (it's perfect under that other OS, using what the screen says is the same resolution - the one recommended by the manufacturer). A uniform single-color surface is replaced by one with light gray vertical stripes (depending of the color, the effect is more or less pronouced) Moving an object over it (mouse, window) distorts the stripes following the object shape (only to the right of the shape) Hardware is a PCIE X700 + a Belinea 10 20 35W screen Software is current Fedora Core Devel The same effect happens both under EXA and XAA xorg packages on system : xorg-x11-apps-1.0.0-1 xorg-x11-drivers-0.99.2-4 xorg-x11-drv-acecad-1.0.0.4-1 xorg-x11-drv-aiptek-1.0.0.4-1 xorg-x11-drv-ati-6.5.7.2-1 xorg-x11-drv-ati-debuginfo-6.5.7.2-1 xorg-x11-drv-calcomp-1.0.0.4-1 xorg-x11-drv-citron-2.1.1.4-1 xorg-x11-drv-digitaledge-1.0.1.2-1 xorg-x11-drv-dmc-1.0.0.4-1 xorg-x11-drv-dummy-0.1.0.4-1 xorg-x11-drv-dynapro-1.0.0.4-1 xorg-x11-drv-elo2300-1.0.0.4-1 xorg-x11-drv-elographics-1.0.0.4-1 xorg-x11-drv-evdev-1.0.0.4-1 xorg-x11-drv-fbdev-0.1.0.4-1 xorg-x11-drv-fpit-1.0.0.4-1 xorg-x11-drv-hyperpen-1.0.0.4-1 xorg-x11-drv-i810-1.4.1.2-1 xorg-x11-drv-jamstudio-1.0.0.4-1 xorg-x11-drv-joystick-1.0.0.4-1 xorg-x11-drv-keyboard-1.0.1.2-1 xorg-x11-drv-keyboard-debuginfo-1.0.1.2-1 xorg-x11-drv-magellan-1.0.0.4-1 xorg-x11-drv-magictouch-1.0.0.4-1 xorg-x11-drv-mga-1.2.1.2-1 xorg-x11-drv-microtouch-1.0.0.4-1 xorg-x11-drv-mouse-1.0.3-1 xorg-x11-drv-mouse-debuginfo-1.0.3-1 xorg-x11-drv-mutouch-1.0.0.4-1 xorg-x11-drv-nv-1.0.1.4-1 xorg-x11-drv-palmax-1.0.0.4-1 xorg-x11-drv-penmount-1.0.0.4-1 xorg-x11-drv-s3-0.3.5.4-1 xorg-x11-drv-s3virge-1.8.6.4-1 xorg-x11-drv-savage-2.0.2.2-1 xorg-x11-drv-siliconmotion-1.3.1.4-1 xorg-x11-drv-sis-0.8.1.2-1 xorg-x11-drv-sisusb-0.7.1.2-1 xorg-x11-drv-spaceorb-1.0.0.4-1 xorg-x11-drv-summa-1.0.0.4-1 xorg-x11-drv-tdfx-1.1.1.2-1 xorg-x11-drv-trident-1.0.1.1-1 xorg-x11-drv-ur98-1.0.0.4-1 xorg-x11-drv-vesa-1.0.1.2-1 xorg-x11-drv-vesa-debuginfo-1.0.1.2-1 xorg-x11-drv-vga-4.0.0.4-1 xorg-x11-drv-via-0.1.33.1-1 xorg-x11-drv-vmware-10.11.1.2-1 xorg-x11-drv-void-1.0.0.4-1 xorg-x11-drv-voodoo-1.0.0.4-1 xorg-x11-filesystem-0.99.2-3 xorg-x11-fonts-base-1.0.0-3 xorg-x11-fonts-truetype-1.0.0-3 xorg-x11-fonts-Type1-1.0.0-3 xorg-x11-font-utils-1.0.0-1 xorg-x11-font-utils-1.0.0-1 xorg-x11-font-utils-debuginfo-1.0.0-1 xorg-x11-proto-devel-7.0-1 xorg-x11-resutils-1.0.0-1 xorg-x11-server-utils-1.0.0-1 xorg-x11-server-Xorg-1.0.0-3 xorg-x11-utils-1.0.0-1 xorg-x11-xauth-1.0.0-1 xorg-x11-xdm-1.0.1-1 xorg-x11-xfs-1.0.0-2 xorg-x11-xfs-debuginfo-1.0.0-2 xorg-x11-xfs-utils-1.0.0-2 xorg-x11-xinit-1.0.0-1 xorg-x11-xinit-debuginfo-1.0.0-1 xorg-x11-xkbdata-1.0.0-1 xorg-x11-xkb-utils-1.0.0-1 xorg-x11-xkb-utils-debuginfo-1.0.0-1 xorg-x11-xsm-1.0.0-1
More info in the xorg boog
Thanks for the report, and the upstream bug URL: https://bugs.freedesktop.org/show_bug.cgi?id=5679 I've added myself to the upstream CC. We'll track this issue in X.Org bugzilla. Setting status to "UPSTREAM" for tracking.