I also experience tearing when viewing web sites with chromium and scrolling downwards webnewspapers etc. Hope this adds more relevant info. On Sun, Sep 9, 2012 at 8:00 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote: > 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
