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Groups > linux.debian.bugs.dist > #964227

Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet)

From userm57@yahoo.com
Newsgroups linux.debian.bugs.dist, linux.debian.maint.x
Subject Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet)
Date 2019-07-12 04:50 +0200
Message-ID <yiTNg-5Sk-5@gated-at.bofh.it> (permalink)
References (4 earlier) <yiSet-4Yd-5@gated-at.bofh.it> <yiSHw-58g-9@gated-at.bofh.it> <yiTkd-5HS-1@gated-at.bofh.it> <ygfhf-6bo-7@gated-at.bofh.it> <yiTkd-5HS-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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On 7/11/19 8:15 PM, Finn Thain wrote:
> On Thu, 11 Jul 2019, userm57@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).

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Thread

Bug#931430: Acknowledgement (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) userm57@yahoo.com - 2019-07-04 21:10 +0200
  Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-12 03:10 +0200
    Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) userm57@yahoo.com - 2019-07-12 03:40 +0200
      Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-12 04:20 +0200
        Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) userm57@yahoo.com - 2019-07-12 04:50 +0200
          Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-12 12:10 +0200
  Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Michel Dänzer <michel@daenzer.net> - 2019-07-12 10:10 +0200
    Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-12 12:10 +0200
      Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Michel Dänzer <michel@daenzer.net> - 2019-07-12 12:20 +0200
  Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-13 02:30 +0200
    Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Michel Dänzer <michel@daenzer.net> - 2019-07-15 11:50 +0200
      Bug#931430: Update (X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet) Finn Thain <fthain@telegraphics.com.au> - 2019-07-15 13:00 +0200

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