<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - amdgpu hangs on resume on Lenovo A475" href="https://bugs.freedesktop.org/show_bug.cgi?id=107781#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - amdgpu hangs on resume on Lenovo A475" href="https://bugs.freedesktop.org/show_bug.cgi?id=107781">bug 107781</a> from <a class="email" href="mailto:walthervondervogelweide@gmx.de" title="Alex Findler <walthervondervogelweide@gmx.de>"> Alex Findler</a> <pre>I've tried with all kernels that Fedora offered during the last two months, including 4.16 varieties. These are the kernel options I tried: radeon.cik_support=0 amdgpu.cik_support=1 scsi_mod.scan=sync amdgpu.gpu_recovery=1 amdgpu.dc=1 I have now added the option iommu=soft, and it seems to solve the problem! I have tried suspend via script (echo mem > /sys/power/state), via hardware button, and via plasmashell option, and all come back, including wake-up by lid signal. I'll test this for a couple of days now and see if it works persistently, then report back. Thanks for your quick reaction, it is much appreciated.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>