http://bugzilla.opensuse.org/show_bug.cgi?id=1190854 http://bugzilla.opensuse.org/show_bug.cgi?id=1190854#c6 --- Comment #6 from Hadrien Grasland <grasland@lal.in2p3.fr> --- Created attachment 853412 --> http://bugzilla.opensuse.org/attachment.cgi?id=853412&action=edit dmesg log with 32-bit mappings forced and resizable BAR disabled I found two firmware settings related to device memory mappings: 1. One that inhibits mapping 64-bit integrated devices above 4 GB. 2. One that disables resizable BAR support. Strangely enough, these two firmware settings seem to be interdependent: - If I try to force 32-bit mappings without disabling resizable BAR, then nothing changes in dmesg, and on my next trip to the UEFI setup screen I see that the 32-bit mapping setting was silently reverted back off by the firmware. - If I try to disable resizable BAR support without forcing 32-bit mappings, then I still see messages about BAR resizing in dmesg, suggesting that the change was ineffective. However, resizable BARs are still marked as disabled on my next trip to the UEFI setup screen. - If I force 32-bit mappings AND disable resizable BARs, then I get the enclosed log. AMDGPU initialization still fails, and GPU VMEM detection is still broken, but all the logs about BARs that were previously present are gone, suggesting that at least this did something. -- You are receiving this mail because: You are on the CC list for the bug.