[Bug 15056] [radeon] machine freezes when X is stopped or second X started

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Mar 20 09:50:23 PDT 2008


--- Comment #7 from Alex Deucher <agd5f at yahoo.com>  2008-03-20 09:50:22 PST ---
I'm guessing it has something to do with the memory map:
-MC_FB_LOCATION (0148)  0x07ff0000
+MC_FB_LOCATION (0148)  0x7fff0000

radeonfb sets it up the same way as the x driver while OF does it differently. 
When the X driver restores the OF values, that is probably what causes the
hang.  Unfortunately, I'm not sure of a good fix.  You might try adjusting the
delays when restoring the memmap regs, or maybe the order in which they are
restored relative to the rest of the registers.

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