Painfully slow X11 after upgrade

[Mikhail T.]

Hello!

I upgraded from FreeBSD-9 to 10.1 and rebuilt ports -- using WITH_NEW_XORG.

Though I am able to start X-session, everything is horribly slow. Moving
a window, for example, I can see it repaint... The video card is nothing
exciting -- an ATI ES1000 515E built into this server's motherboard, but
it was perfectly adequate before the upgrade...

Other signs of trouble, that I can see:

  * The following problems appear in Xorg.0.log
    <http://aldan.algebra.com/%7Emi/Xorg.0.log>:
    [  2637.217] (EE) AIGLX error: Calling driver entry point failed
    [  2637.217] (EE) AIGLX: reverting to software rendering
    [  2637.217] (II) AIGLX: Screen 0 is not DRI capable
    [  2637.246] (II) AIGLX: Loaded and initialized swrast
    [  2637.246] (II) GLX: Initialized DRISWRAST GL provider for screen 0
    [  2637.321] (II) RADEON(0): Setting screen physical size to 423 x 317
  * glxgears (with LIBGL_DEBUG set to "verbose") reports on start-up:
    MESA-LOADER: could not get PCI ID
    libGL: OpenDriver: trying /opt/lib/dri/radeon_dri.so
    libGL error: failed to create dri screen
    libGL error: failed to load driver: radeon
    libGL: OpenDriver: trying /opt/lib/dri/swrast_dri.so
    libGL: Can't open configuration file /home/mi/.drirc: No such file
    or directory.
    libGL: Can't open configuration file /home/mi/.drirc: No such file
    or directory.
  * The frame-rate of glxgears (in default window-size) is between 100
    and 150 per second. I'm not using 3D much -- but even the 2D
    performance is unusable. A Maxtor-card worked better 15 years ago...

I did not change my xorg.conf
<http://aldan.algebra.com/%7Emi/xorg.conf>. Any advice? Should I
downgrade the server-components back to 1.7.7 because the "NEW_XORG" is
not production-ready? Or are there some other options I can tweak?

Please, advise. Thanks! Yours,

    -mi