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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Regression: Lenovo e585 (ryzen 2500u) freezes during boot with 4.20-rc5/rc6, amdgpu error"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108992#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Regression: Lenovo e585 (ryzen 2500u) freezes during boot with 4.20-rc5/rc6, amdgpu error"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108992">bug 108992</a>
from <span class="vcard"><a class="email" href="mailto:christian.frank.uwb@googlemail.com" title="chris <christian.frank.uwb@googlemail.com>"> <span class="fn">chris</span></a>
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<pre>(In reply to chris from <a href="show_bug.cgi?id=108992#c14">comment #14</a>)
<span class="quote">> I can confirm that the iommu=pt workaround works, also iommu=soft works to
> get gdm started and use the laptop. Sadly i have no idea what impact those
> workarounds have when it comes to performance of the gpu/cpu or battery
> lifetime ?</span >
Sadly i had a freeze during desktop usage shortly after boot using iommu=pt.
The driver situation for raven ridge is really sad atm :( .</pre>
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