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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915 driver isn't used for Broadwell-U GPU in Lenovo Helix 2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88797#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915 driver isn't used for Broadwell-U GPU in Lenovo Helix 2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88797">bug 88797</a>
from <span class="vcard"><a class="email" href="mailto:david.lynam@redbrick.dcu.ie" title="David Lynam <david.lynam@redbrick.dcu.ie>"> <span class="fn">David Lynam</span></a>
</span></b>
<pre>This bug is affecting me, too, on a third-generation Lenovo X1 Carbon.
When GDM under X starts, it is not using HW acceleration and seems to be stuck
with llvmpipe if I continue to use a pure X session.
If I log into GNOME with Wayland, HW acceleration starts to work and glxinfo
will give me this string: OpenGL renderer string: Mesa DRI Intel(R) HD Graphics
5500 (Broadwell GT2)
I don't think I have any problems with ACPI and my kernel has the i915 module
loaded.</pre>
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