[Xcb] [Bug 84252] DRI3 rendering gets stuck waiting for present idle notify event

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Jul 8 08:21:14 PDT 2015


--- Comment #57 from Rex Dieter <rdieter at math.unl.edu> ---
I've a downstream user
that recently experienced another deadlock (in plasmashell), using the latest
commits referenced in this report.

#0  0x00000035130f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003d9c60a182 in _xcb_conn_wait (__timeout=-1, __nfds=1,
__fds=0x7ffe1eecb730) at /usr/include/bits/poll2.h:46
#2  0x0000003d9c60a182 in _xcb_conn_wait (c=c at entry=0x1007ff0,
cond=cond at entry=0x58bc8f8, vector=vector at entry=0x0, count=count at entry=0x0) at
#3  0x0000003d9c60bd49 in xcb_wait_for_special_event (c=c at entry=0x1007ff0,
se=0x58bc8d0) at xcb_in.c:744
#4  0x0000003708e49e72 in dri3_find_back (c=c at entry=0x1007ff0,
priv=priv at entry=0x87cd3a0) at dri3_glx.c:1263
#5  0x0000003708e4ac8f in dri3_get_buffers (driDrawable=0x87cd3a0,
loaderPrivate=0x87cd3a0, buffer_type=dri3_buffer_back, format=4107) at
#6  0x0000003708e4ac8f in dri3_get_buffers
(driDrawable=driDrawable at entry=0x463e0a0, format=4107,
stamp=stamp at entry=0x463e0d0, loaderPrivate=loaderPrivate at entry=0x87cd3a0,
buffer_mask=<optimized out>, buffer_mask at entry=1,
buffers=buffers at entry=0x7ffe1eecb980) at dri3_glx.c:1466
#7  0x00007f09f73ae14b in intel_update_renderbuffers (drawable=0x463e0a0,
brw=0x2b06018) at brw_context.c:1527
#8  0x00007f09f73ae14b in intel_update_renderbuffers
(context=context at entry=0x2af37b0, drawable=drawable at entry=0x463e0a0) at
#9  0x00007f09f73ae4a1 in intel_prepare_render (brw=brw at entry=0x2b06018) at
#10 0x00007f09f73a21c0 in brw_clear (ctx=0x2b06018, mask=50) at brw_clear.c:234
#11 0x0000003715f28bfa in QSGBatchRenderer::Renderer::renderBatches()
(this=this at entry=0x8730b40)

Is this the same issue or should we open a separate report?

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