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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>This is the stalled process:
[ 246.122116] Xorg D ffff88021fa13800 0 1343 1298 0x00400004
[ 246.122117] ffff8802115bbac8 0000000000000086 ffff880212418210
ffff8802115bbfd8
[ 246.122119] 0000000000013800 0000000000013800 ffff880212418210
ffff88021fa140b8
[ 246.122120] ffff8802116d0000 0000000000000001 0000000000000000
ffff880212418210
[ 246.122121] Call Trace:
[ 246.122124] [<ffffffff815cdfb8>] io_schedule+0x98/0x130
[ 246.122135] [<ffffffffa0117915>] __wait_seqno+0x315/0x580 [i915]
[ 246.122156] [<ffffffffa0118a6a>] i915_gem_object_wait_rendering+0x3a/0x70
[i915]
[ 246.122174] [<ffffffffa0118f3b>]
i915_gem_object_finish_gpu.part.50+0xb/0x20 [i915]
[ 246.122192] [<ffffffffa011d6b8>]
i915_gem_object_set_cache_level+0x298/0x350 [i915]
[ 246.122211] [<ffffffffa011d896>]
i915_gem_object_pin_to_display_plane+0x46/0x190 [i915]
[ 246.122230] [<ffffffffa013608f>] intel_pin_and_fence_fb_obj+0x9f/0x140
[i915]
[ 246.122262] [<ffffffffa013617f>] intel_gen7_queue_flip+0x4f/0x300 [i915]
[ 246.122295] [<ffffffffa013e819>] intel_crtc_page_flip+0x1d9/0x3c0 [i915]
[ 246.122328] [<ffffffffa0096bde>] drm_mode_page_flip_ioctl+0x15e/0x2d0 [drm]
[ 246.122346] [<ffffffffa008696d>] drm_ioctl+0x46d/0x570 [drm]
[ 246.122350] [<ffffffff811a23f7>] do_vfs_ioctl+0x2d7/0x4b0
[ 246.122356] [<ffffffff811a2650>] SyS_ioctl+0x80/0xa0
[ 246.122359] [<ffffffff815d807d>] system_call_fastpath+0x1a/0x1f
[ 246.122361] [<00007fd174c481e7>] 0x7fd174c481e6</pre>
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