http://bugs.freedesktop.org/show_bug.cgi?id=14227
Summary: Intel driver waiting forever on VBlank
Product: DRI
Version: XOrg CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM modules
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: [EMAIL PROTECTED]
Running today's git of X server, mesa, drm and the intel driver, indirect
rendering is very slow and unstable.
LIBGL_ALWAYS_INDIRECT=1 glxgears reports a high number of frames but actually
displays very few of them. After a short while the server locks on:
(gdb) bt
#0 0xb7c40794 in ioctl () from /lib/libc.so.6
#1 0xb7a3199e in drmWaitVBlank (fd=10, vbl=0xbf87789c) at xf86drm.c:1857
#2 0xa7539e4f in do_wait (vbl=0xfffffffc, vbl_seq=0xbf87789c, fd=-1072667590)
at ../common/vblank.c:282
#3 0xa753a084 in driWaitForVBlank (priv=0x87c8050,
missed_deadline=0xbf877907 "") at ../common/vblank.c:453
#4 0xa7543f86 in intelSwapBuffers (dPriv=0x87c8050) at intel_buffers.c:831
#5 0xa753a1b7 in driSwapBuffers (drawable=0xfffffffc)
at ../common/dri_util.c:330
#6 0xb7a9b462 in __glXDRIdrawableSwapBuffers (basePrivate=0x87c7ff0)
at glxdri.c:216
#7 0xb7a63c86 in __glXDisp_SwapBuffers (cl=0x84861a4,
pc=0x87dafdc "\235\v\003") at glxcmds.c:1431
#8 0xb7a66e26 in __glXDispatch (client=0x83f4770) at glxext.c:492
#9 0x08152ad2 in XaceCatchExtProc (client=0x83f4770) at xace.c:307
#10 0x0808a3a4 in Dispatch () at dispatch.c:467
#11 0x080710cd in main (argc=9, argv=0xbf877b44, envp=Cannot access memory at
address 0xc0106442
) at main.c:448
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