PowerMac G4 graphics issue
Justin Hibbits
chmeeedalf at gmail.com
Sat Mar 29 17:02:22 UTC 2014
On Sat, 29 Mar 2014 16:40:46 +0000
Alexey Dokuchaev <danfe at FreeBSD.org> wrote:
> On Sat, Mar 29, 2014 at 09:10:59AM -0700, Justin Hibbits wrote:
> > On Mar 29, 2014 5:42 AM, "Alexey Dokuchaev" <danfe at freebsd.org>
> > wrote:
> > > Looks like `relax_mmap' is defined in powerpc/ofw/ofw_syscons.c,
> > > but I've removed "device sc" from kernel config in favor of
> > > "device vt". Does it mean that X11 + ATI card + Newcons is not
> > > supported yet? Can it be easily fixed, or I have to go back to
> > > syscons(4) for now?
> >
> > Correct. Newcons+ofwfb+ATI in X11 doesn't work. You can try
> > xf86-video-scfb in ports to get X working with newcons for you, but
> > you lose any hardware acceleration that the ATI driver gives.
>
> It's OK, as long as I can have hardware acceleration I can stay with
> syscons for a while. I've backed out vt(4) support from kernel
> config and rebuilt; startx(1) now gets me to graphics mode with
> xterm(1) and window manager just fine (FWIW, hw.ofwfb.relax_mmap is 1
> by default now; I'm too lazy to dig out which particular commit made
> it so, but thanks for that).
>
> HW accel seems to work: X11 overall feels quite fast; glxinfo reports:
>
> direct rendering: Yes
> server glx vendor string: SGI
> server glx version string: 1.4
> ... [but]
> OpenGL vendor string: Mesa Project
> OpenGL renderer string: Software Rasterizer
> OpenGL version string: 2.1 Mesa 9.1.7
> OpenGL shading language version string: 1.20
>
> glxgears spin at ~53 FPS. I haven't benchmarked Quake yet. ;-)
Awesome! I've never had success with DRI on PowerPC.
> However, screen resolution is 1024x768 for some reason; xrandr(1)
> yields:
>
> Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024
> DVI-1 disconnected 1024x768+0+0 (normal left inverted right x axis y
> axis) 0mm x 0mm DVI-0 disconnected (normal left inverted right x axis
> y axis) S-video disconnected (normal left inverted right x axis y
> axis) 1024x768 (0x55) 65.0MHz
> h: width 1024 start 1048 end 1184 total 1344 skew 0 clock
> 48.4KHz v: height 768 start 771 end 777 total 806 clock
> 60.0Hz
>
> That's not native resolution of my LCD monitor; any ideas how to get
> one? Why X reports "maximum 1024 x 1024"; nothing like that is set in
> xorg.conf.
>
> ./danfe
I think X is just setting it to a square that's big enough to hold the
current screen. That's not always the case, though, as on my G5 I see:
Screen 0: minimum 640 x 400, current 1920 x 1080, maximum 1920 x 1080
Hope that helps.
- Justin
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