Robin Atwood writes:
> On Tuesday 23 November 2010, Nikos Chantziaras wrote:
> > On 11/22/2010 07:02 PM, Robin Atwood wrote:
> > > I have just gone through the steps to use the Radeon KMS driver on
> > > my old laptop which has an RV350 [Mobility Radeon 9600 M10].
> > > Everything seems to work all right and I get the right "render
> > > string" from glxinfo. However, I thought it might enable
> > > compositing to work on the KDE4 desktop but there is no change.
Hmm, I _think_ it didn't work for me either. Can't remember for sure, I
only gave KMS a short try. But quake3 was totally unplayable with about 2
FPS. And I also had other problems, like the screen going black shortly
after entering the LUKS passphrase during initramfs stage. The screen
comes up again when X is started, but I prefer to see boot messages.
> > > What's more, glxgears used to give about 2200 FPS but now it's 50!
> > > So have I been wasting my time?
[...]
> > KMS means you're using DRI2 now, which results in a VSync'ed OpenGL
> > rendering. Though I'd expect 60FPS because of VSync, not 50 :-P
I also had 50 FPS, and would expect 60 with my TFT.
> > One other thing you should do is to enable the "gallium" USE flag and
> >
> > re-emerge Mesa. Then switch to the Gallium driver using:
> > eselect mesa r300 gallium
> >
> > Because that driver is the recommended one for your hardware (R300).
> > The classic driver should be avoided.
>
> Thanks, I would try that, but...
>
> # emerge -av media-libs/mesa
>
> These are the packages that would be merged, in order:
>
> Calculating dependencies... done!
> [ebuild U ] x11-libs/libX11-1.4.0 [1.3.6] USE="-doc -ipv6
> -static-libs - test (-xcb%*)" 2,036 kB
> [ebuild R ] media-libs/mesa-7.8.2 USE="nptl pic xcb -debug
> (-gallium) - motif (-selinux)" VIDEO_CARDS="radeon -intel -mach64 -mga
> -nouveau -r128 - savage -sis -svga -tdfx -via" 0 kB
>
> I set "gallium" in /etc/make.conf but (-gallium) means the flag is
> turned off in a profile somewhere?
Yes, you can override it like this, if you feel brave:
echo "-gallium" >> /etc/portage/profile/use.mask
Wonko
