<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Crashes / Resets From AMDGPU / Radeon VII" href="https://bugs.freedesktop.org/show_bug.cgi?id=110674#c102">Comment # 102</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Crashes / Resets From AMDGPU / Radeon VII" href="https://bugs.freedesktop.org/show_bug.cgi?id=110674">bug 110674</a> from <a class="email" href="mailto:tom@r.je" title="Tom B <tom@r.je>"> Tom B</a> <pre>> Grasping at straws a bit here, but it occurred to me that maybe Linux kernel testing on Radeon VII was done on an early VBIOS that didn't have full UEFI support yet. We know that AMD had to issue a VBIOS update for Radeon VII to fix UEFI support shortly after the launch. So maybe enabling the CSM/Legacy Support in the BIOS, which does impact early GPU initialization, might have some effect on the multimonitor problem? Something I plan to test, but I wanted to share the idea in case someone else has a chance first. I had already tried that unfortunately, I tried the following BIOS options: CSM on/off IOMMU on/of PCIE speed 16x/4x (the only options my motherboard allowed for some reason) Having said that, I didn't try booting using grub in BIOS mode as I didn't want to change my partition table, so it's possible that although I had used CSM, it was only legacy support and still booting in UEFI mode.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>