Bug#931430: X Server in PowerPC Debian SID Xorg is Unusably Slow on Wallstreet
On 2019-07-04 8:56 p.m., userm57@yahoo.com wrote:
> Package: xorg-server
> Version: 1.20
>
> After installing Debian sid on a PowerBook G3 Wallstreet
> (292 MHz, 512 MB memory) and selecting the default Debian
> desktop and Xfce, I noticed that the desktop is unusably
> slow. Just moving or resizing windows on the desktop is
> painfully slow compared to Debian 7.8 (which is usable) and
> Debian 8.11 (which is still usable but slower than 7.8).
>
> It is difficult to quantify the subjective slowness of
> the graphics performance in Debian sid on the Wallstreet.
> In an attempt to quantify the slowness, X11 performance
> was tested and compared in Debian 7.8, Debian 8.11 and
> Debian sid using the x11perf program.
>
> Each x11perf test was run by booting to single-user mode.
>
> For each test (Debian 7.8, Debian 8.11 and Debian sid),
> there are four files:
>
> 1) Serial console log.
> 2) dmesg output.
> 3) Xorg log from /var/log/Xorg.0.log.
> 4) "x11perf -all" output.
One obvious issue is that xserver-xorg-video-mach64 was built without
any hardware acceleration support, because the check for EXA support
spuriously failed.
https://gitlab.freedesktop.org/xorg/driver/xf86-video-mach64/merge_requests/1
fixes this.
Meanwhile, you can try enabling Option "shadow_fb", or using
xserver-xorg-video-fbdev instead of xserver-xorg-video-mach64 (as was
the case with Debian 8).
--
Earthling Michel Dänzer | https://www.amd.com
Libre software enthusiast | Mesa and X developer
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