On Sun, 09 Sep 2012 10:55:46 -0700, Ben Widawsky <ben at bwidawsk.net> wrote: > On 2012-09-09 08:48, Roberth Sjon??y wrote: > > Hello > > > > I run Arch Linux, with it's latest x.org and kernel, and I have > > compiled libdrm and the intel driver from git, and I update it today. > > > > Buit this is issue exists even with the releases. > > > > WIth UXA, rendering of the windows in my XFCE4-desktop goes just > > fines, good performance, windows (exspecially GTK+) doesn't hang > > after > > if I drag them over the screen, but there is lot of small tearing. > > And I want this to go away, I do not use any kind of composition, and > > I am using XFCEs window manager. > > > > Here is my xorg.conf > > > > > > Section "ServerFlags" > > Option "AutoAddDevices" "Off" > > EndSection > > > > Section "InputDevice" > > Identifier "Keyboard0" > > Driver "keyboard" > > Option "XkbLayout" "no" > > EndSection > > > > Section "Device" > > Identifier "Card0" > > Driver "intel" > > Option "AccelMethod" "UXA" > > Option "TearFree" "true" > > Option "MigrationHeuristic" "greedy" > > Option "TripleBuffer" "true" > > EndSection > > > > With SNA, the performance of the applications is muc much worse. If I > > just replace UXA with SNA. > > > > Thanks in advance for any help. > > > > Regards, > > > > Roberth Sjon??y0 > > Unfortunately it's often the case that tearing is pretty much > unavoidable without a compositor. AFAIK you'd just be getting lucky with > SNA, as opposed to UXA. Not so. He is explicitly asking for slow tear-free rendering with Option "TearFree" "true". On my machines that takes about a 50% performance hit which suggests pebkac which is reinforced by the lack of information. -Chris -- Chris Wilson, Intel Open Source Technology Centre
