[Bug 21244] R600: ForceLowPowerMode causes display corruption

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=21244





--- Comment #6 from Luca Tettamanti <kronos.it at gmail.com>  2009-04-17 08:17:33 PST ---
(In reply to comment #5)
> Created an attachment (id=24893)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=24893) [details]
> possible fix, only drop to x8

I can't try it right now, but I believe that there's something wrong with the
reprogramming of the lanes count; please note that lspci *always* report:

LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt-
ABWMgm-

At the end of RADEONSetPCIELanes link_width_cntl is 0x000096 (LC_LINK_WIDTH_RD
is 1) - regardless of the width requested (I was trying to force 16x).


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