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"classic" *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)

Submitted by xela

Assigned to Default DRI bug account

Link to original bug (#101671)

Description

Hi guys,

This error goes for a very long time. I have a hybrid graphics laptop (sandy bridge + radeon), and the only case radeon worked was fglrx. I'm using Gentoo and they have recently dropped any support for fglrx (mostly because AMD and Xorg had), so I tried fresh installation just to get some luck - and it failed exactly as before. Trivia:

  • radeon and i915 as modules;
  • power on;
  • after login manager shows a pic, everything hangs deadly;
  • using netconsole I was able to get dmesg error when everything freezes:

[ 470.521009] [drm] PCIE gen 2 link speeds already enabled
[ 470.522846] radeon 0000:01:00.0: No VRAM object for PCIE GART.
[ 470.523493] [drm:evergreen_resume [radeon]] *ERROR* evergreen startup failed on resume

I provide detailed system info shortly. Thanks!