drm/radeon + X + pkgsrc 2015Q1

[Frank Kardel <kardel%netbsd.org@localhost>]

Hi,

I just built 2015Q1/amd64 for 7.99.16.

The good news is KMS seems to work for my ATI Radeon HD 5450.
However there seems to be quite some trouble with the X server when glx 
is not disabled. For a while everything seems to work smoothly (glxgears 
is fine, most glx screensavers work - great), but then the Xorg server
crashes with SIGSEGV. Untortunately it is not predictable when. 
Sometimes it is enough to open the first or second window via ALT-F2. 
Sometimes the Xserver survives longer. The good thing is, that the
system remains usable after the crash and kdm restarts the Xorg server. 
So the issue seems to be limited to Xserver.

System amd64, 32Gb, 7.99.16 kernel+userland, pkgsrc-2015Q1, kde4.

Any ideas?

Frank