[Bug 84252] [SNA/HSW] DRI3 rendering gets stuck waiting for present idle notify event

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84252

--- Comment #11 from Tobias Jakobi <liquid.acid at gmx.net> ---
backtrace from glxgears when it hangs:
#0  0xf7752d10 in __kernel_vsyscall ()
#1  0xf737ef53 in poll () from /lib/libc.so.6
#2  0xf7081046 in _xcb_conn_wait (c=0x8442a78, cond=0xfff65cdc, vector=0x0,
count=0x0)
    at
/var/tmp/portage/x11-libs/libxcb-9999/work/libxcb-9999/src/xcb_conn.c:479
#3  0xf7082ec3 in wait_for_reply (c=0x8442a78, request=23, e=0x0) at
/var/tmp/portage/x11-libs/libxcb-9999/work/libxcb-9999/src/xcb_in.c:491
#4  0xf7083018 in xcb_wait_for_reply (c=0x8442a78, request=23, e=0x0) at
/var/tmp/portage/x11-libs/libxcb-9999/work/libxcb-9999/src/xcb_in.c:521
#5  0xf70d7db0 in xcb_dri3_open_reply (c=c at entry=0x8442a78, cookie=...,
e=e at entry=0x0) at dri3.c:146
#6  0xf7621619 in dri3_open (provider=0, root=156, dpy=<optimized out>) at
dri3_glx.c:1573
#7  dri3_create_screen (screen=0, priv=0x844c618) at dri3_glx.c:1812
#8  0xf75f563a in AllocAndFetchScreenConfigs (priv=0x844c618, dpy=0x8442008) at
glxext.c:788
#9  __glXInitialize (dpy=dpy at entry=0x8442008) at glxext.c:902
#10 0xf75f1b7d in GetGLXPrivScreenConfig (dpy=dpy at entry=0x8442008,
scrn=scrn at entry=0, ppriv=ppriv at entry=0xfff65e84, ppsc=ppsc at entry=0xfff65e88)
    at glxcmds.c:172
#11 0xf75f241e in GetGLXPrivScreenConfig (ppsc=0xfff65e88, ppriv=0xfff65e84,
scrn=0, dpy=0x8442008) at glxcmds.c:168
#12 glXChooseVisual (dpy=0x8442008, screen=0, attribList=0xfff66080) at
glxcmds.c:1249
#13 0x0804b2aa in ?? ()
#14 0x08049573 in ?? ()
#15 0xf72b6943 in __libc_start_main () from /lib/libc.so.6
#16 0x08049f01 in ?? ()

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