http://bugs.freedesktop.org/show_bug.cgi?id=21223





--- Comment #12 from Richard Neill <x...@richardneill.org>  2009-05-10 19:30:49 
PST ---
A bit more data:

* This also happens on a Radeon Mobility X700 card 
  (system is Ubuntu Jaunty; all updates applied)


* Different behaviour occurs with the various --preset options:

lattice --preset 1   
  => kills the X server, can recover with Alt-SysRQ-K

lattice --preset 2
  => seems to work OK

lattice --preset 3
  => kills system stone dead (need a power-cycle to recover)
     #surely an X-server bug shouldn't kill the kernel?

lattice --preset 4
  => works for a few seconds, then stone dead.


Of the other screensavers in the rss_glx set, most of them work just fine:
hyperspace, helios, euphoria, skyrocket, solarwinds, plasma, fieldlines,
flocks. Two of them seem to do abolutely nothing , but just stay black: cyclone
and flux.


The RSS set seem to be pretty good at exposing fatal bugs in ATI drivers - I
recall my Rage128 mobility being locked solid by one particular invocation of
Euphoria about 5 years ago. I would suggest that they might make quite a good
reliability test for new drivers.


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