Re: [R300 and other radeons] MergedFB lockups

[Philipp K. K. <pk...@sp...>]

Vladimir Dergachev schrieb:
> 
> I think I found the cause of lockups in VB mode - they were due to 
> cursor updating function in radeon_mergedfb.c calling OUTREGP() which in 
> turn called INREG.
> 
> When silken mouse is enabled this function could be called at any time 
> which would do *bad* things when CP engine is active.
> 
> The fix of putting RADEONWaitForIdleMMIO() works fine on my setup.
> 
> I have *no* idea why this worked with immediate mode at all and why no 
> issues were reported by R200 and Radeon users (well, I only looked 
> through the mailing lists, perhaps there is something on bugzilla but I 
> don't know how to use that efficiently)

Well my rv250 lockups occour only during mouse movement in fullscreen
applications. But for month ago there were no lockups. The situation
was slowly getting worse since. With current DRM and Mesa driver I
get an immediate lockup in gl-117 when moving the mouse. If I use
current DRM with an older Mesa it locks up after about a minute of mouse
movement.

Philipp