Created attachment 25566 [details]
Xorg.0.log from failed X start
I have done everything as described here:
After overconing vesafb and vga16 problem I was able to see console but starting X failed and I only get error(full log attached):
failed to add fb
After reading some code I found that 2d driver uses drmModeAddFB
with in fact calls ioctl DRM_IOCTL_MODE_ADDFB. Unfortunately it returns -1. So I checked drm module to find out why the -1 is returned. The drm_mode_addfb should support this ioctl, but I don't think it was even called once. I have even added DRM_ERROR line to show if it was used, but I never saw anything printed from it.
Created attachment 25567 [details]
dmesg(drm debug=1) output for yesterday, no visible error from drm_mode_addfb
Do you still have issue with recent checkout ?
After testing your xf86-video-ati:fba534017e581fcd9b9e49ba0b281fb500f576a7 with drm-next(drm-next-radeon):57ed16f7686e9c0c4ec5f7711688a503481987c2 I didn't saw this problem.
Closing the bug.