On 7/11/19 8:15 PM, Finn Thain wrote:
> On Thu, 11 Jul 2019, user...@yahoo.com wrote:
> ...
>>
>> Shadowfb has no effect for mach64.
>
> I haven't seen any results that confirm this. Your results seem to show
> that the xorg.conf change was bogus.
>
> Moreover, the X server logs show that the shadow framebuffer was never
> actually enabled for any mach64 test.
>
> So it's an open question.
> ...
Please see Xorg_sid_mach64.log.
That file has this line:
[ 16529.773] (WW) MACH64(0): Cannot shadow an accelerated frame buffer.
I take that to mean that shadowing can not work for mach64, so it is
explicitly disabled regardless of whether it is specified in an
xorg.conf file (and it must be specified somewhere by default for
mach64, since I didn't use any custom xorg.conf files). That same
message, and no other message related to shadowing, appears in the Xorg
log regardless of whether shadowfb (or shadow_fb) is set to "true" or
"false" in a custom /etc/X11/xorg.conf file:
Section "Device"
Identifier "Mach64"
Driver "mach64"
Option "shadowfb" "true"
EndSection
This was seen in an earlier Xorg.log file that I may have only reported
but did not include (it showed that /etc/X11/xorg.conf was read and no
errors were logged regarding that file, though the above warning was
included regardless of the shadowfb, or shadow_fb, setting).
