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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [xf86-video-intel] font/image rendering is broken with sna accel method: incorrect detiling"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91105#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [xf86-video-intel] font/image rendering is broken with sna accel method: incorrect detiling"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91105">bug 91105</a>
              from <span class="vcard"><a class="email" href="mailto:freedesktop@mohlerm.ch" title="mohlerm <freedesktop@mohlerm.ch>"> <span class="fn">mohlerm</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=116712" name="attach_116712" title="Xorg log">attachment 116712</a> <a href="attachment.cgi?id=116712&action=edit" title="Xorg log">[details]</a></span>
Xorg log

I'm experiencing a similar issue.
My terminal emulator has very poor performance and some programs don't show
text.
General system performance is way worse.

Using version: 1:2.99.917+364+gb24e758-1, Thinkpad X1 Carbon, Intel Core i7
3667U with an Intel HD Graphics 4000 
Downgrading to 2.99.917-5 helped as well.</pre>
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