This seems to be the most prominent of bugs related to DRI2... When a new window is opened under Compiz with intel-batchbuffer and DRI2, it will quite often crash the X server with "Failed to map pixmap: Device is busy", after which any attempts to restart the server yield nothing but an unusable black screen and I must restart (log says hardware errors present, which is surprisingly only a warning...) Steps to reproduce: Start an X server with current intel-batchbuffer branch and DRI2 enabled. Start Compiz. Open a new window. Repeat previous step as many times as needed. I will upload the Xorg.*.log as soon as this forced fsck finishes, not that there is much in it as I tend to not compile for extreme amounts of debug information.
I already sent my log to Kristian Høgsberg.
Eleven year old bug, closing.
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