[Bug 47519] Xorg hangs in ioCtl in path of RADEONDownloadFromScreenCS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=47519

--- Comment #4 from Torsten Krah <tkrah at fachschaft.imn.htwk-leipzig.de> 2012-03-19 09:01:48 PDT ---
Some notes (but it may be fate or something, but it feels like it does have
some influence):
Using this config - it does still hang from time to time (e.g. one or two times
a day):

Section "Device"
        Identifier  "Card0"
    Option    "EnablePageFlip"        "off"  #supported on all R/RV/RS4xx and
older hardware and set on by default
    Option    "ColorTiling"           "off"  #enabled by default on RV300 and
later radeon cards.
    Option    "EXAPixmaps"            "off"  #when on icreases 2D performance,
but may also cause artifacts on some old cards
    Option    "AccelDFS"              "off"  #default is on, read the radeon
manpage for more information
EndSection

If i remove those config or set all to "on" it happens really frequently
(enough to make me report this one here to seek help :-) ).

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