[Intel-gfx] Fighting tearing

[Paul Menzel]

Dear Roberth,


Am Sonntag, den 09.09.2012, 17:48 +0200 schrieb Roberth Sjonøy:

> I run Arch Linux, with it's latest x.org and kernel,

that is xorg-server 1.12.4-1 [1] and linux 3.5.3-1 [2].

> and I have compiled libdrm and the intel driver from git, and I update
> it today.

Please provide the Git commit hashes with the commit summaries to make
life for readers of your message easier.

> But this is issue exists even with the releases.

Since when do you experience these issues?

> 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.

Maybe your monitor causes the tearing?

> 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.

Is the tearing fixed though?

What happens when you test different Window managers or some live
distribution with other versions? You can even test those by saving the
ISO file on your drive and directly boot those using GRUB 2 [3].

> Thanks in advance for any help.

I am sorry for not being more helpful. Maybe the developers have more
ideas.


Thanks,

Paul


[1] http://www.archlinux.org/packages/extra/i686/xorg-server/
[2] http://www.archlinux.org/packages/core/i686/linux/
[3] https://bugs.freedesktop.org/show_bug.cgi?id=26294#c13
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