https://bugs.freedesktop.org/show_bug.cgi?id=91708

Bug ID: 91708 Summary: Tonga boots to terminal with drm-next-4.3, va conflict Product: DRI Version: XOrg git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: master.homer@gmail.com

Created attachment 117829 --> https://bugs.freedesktop.org/attachment.cgi?id=117829&action=edit Kernel log when failing to boot normally

I've been having problems booting when using a self-compiled kernel of the drm-next-4.3 branch from the agd5f repo. The amdgpu kernel driver complains that some va (virtual address?) conflicts with another, which makes it boot to a terminal. You can see the conflict in the kernel log: Aug 20 22:29:14 homer-desktop kernel: [ 6.762949] amdgpu 0000:01:00.0: bo ffff880620b34800 va 0x0000100000-0x0000100400 conflict with 0x0000100000-0x0000100400 Aug 20 22:29:14 homer-desktop kernel: [ 6.763693] amdgpu 0000:01:00.0: bo ffff880620b34800 va 0x0000100000-0x0000100400 conflict with 0x0000100000-0x0000100400 Aug 20 22:29:14 homer-desktop kernel: [ 6.764357] amdgpu 0000:01:00.0: bo ffff880620b34800 va 0x0000100000-0x0000100400 conflict with 0x0000100000-0x0000100400 Aug 20 22:29:14 homer-desktop kernel: [ 6.765032] amdgpu 0000:01:00.0: bo ffff880620b34800 va 0x0000100000-0x0000100400 conflict with 0x0000100000-0x0000100400

I do not have these problems when using a self-compiled kernel from the drm-next-4.2 or drm-fixes-4.2 branch, so something must have changed from 4.2 to 4.3 that causes the conflict.

Using a Radeon R9 285 (TONGA) on Kubuntu vivid with mesa 11 from the oibaf ppa and a self-compiled xf86-video-amdgpu.