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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#c135">Comment # 135</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>Yup. :(
As a final stab in this direction, please try:
diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 50a7da2..3058086 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -967,7 +967,7 @@ static bool __kgem_throttle(struct kgem *kgem)
* too much and completely starve X. We will sleep again shortly,
* and so catch up or detect the hang.
*/
- if (ioctl(kgem->fd, DRM_IOCTL_I915_GEM_THROTTLE) == 0) {
+ if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_THROTTLE) == 0) {
kgem->need_throttle = 0;
return false;
}</pre>
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