Re: 2.6.0-test6 ruby success with matrox G550, and some questions

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Hi,

i think i almost got it :-)

almost, cause my main monitor died in the weekend 
and i used a switch, and the accelerated head gives
pretty strange output 

Helge please correct me if i'm wrong somewhere,
or if smth differs from your setup

> > How did you got it running?
> I used this machine single-headed for a long time.
> All I did was to create a second config file (xf86config-4) 
> for fbdev, and use matroxset-0.3 from Petrs site to
> set up which framebuffer connects to what output.
> 
> I can set up a guest account on the machine, if you
> want to look more at the setup.  
> 
> > i'm tring with no success quite a long time.
> 
> > 
> > which version of XFree ?
> debian packaged xserver-xfree86-dri-trunk from
> http://people.debian.org/~daenzer/dri-trunk-sid/
> because I want accelerated opengl on at least one screen.

that was my first problem, i used the matrox drivers
which obviously doesn't play nice with linux-2.6
i got all kind of agp errors and tring to activate "UseFBDev" 
caused lock ups
switching to the plain mga drivers fixed the problem,
but also the distored screen :( i'll have to play more with it

> I got xdm working too.
> >From my /etc/X11/xdm/Xservers:
> 
> :0 local /usr/X11R6/bin/X :0 vt7  -deferglyphs 16 -nolisten tcp
> :1 local /usr/X11R6/bin/X :1 vt17 -deferglyphs 16 -nolisten tcp
> -xf86config xf86config-4
> 
> The first server use the standard XF86Config-4
> This runs the servers, but I had to modify /etc/X11/xdm/Xsetup
> too to actually make the second framebuffer visible.  Whenever the
> accelerated server starts, it configures the G550 to show the same
> screen on both outputs.  Fortunately, xdm then runs the Xsetup script,
> so that's where I put the following lines:
> /usr/local/bin/matroxset -f /dev/fb/1 -m 0
> /usr/local/bin/matroxset -f /dev/fb/0 -m 2
> /usr/local/bin/matroxset -f /dev/fb/1 -m 1

that's basicly the script swapped from the matroset tarball, correct ?

> 1. line: disconnect /dev/fb/1 from whatever output it uses (in case it was
> using&blocking  output 2)
> 2. line: connect /dev/fb/0 to output 2, which is the vga connector
> 3. line: connect /dev/fb/1 to output 1, which is the DVI connector with a
> VGA converter.
> The output numbers are really bits, so connecting a framebuffer to output
> 3 shows
> it on both screens.  There's also a third output, bitnumber 4, but there
> is no such plug.
> Perhaps the video out?  "matroxset" seems undocumented.
> 
> This setup means both servers get a screen.  A minor inconvenience is the
> way
> both screens blink whenever one of the xdm's are reset. 
> 
> > which matrox drivers?
> I believe I'm using the mga_drv.o (and fbdev_drv.o) that comes with
> xserver-xfree86-dri-trunk.
> >From /var/log/XFree86.0.log:
> (II) LoadModule: "mga"
> (II) Loading /usr/X11R6/lib/modules-dri-trunk/drivers/mga_drv.o
> (II) Module mga: vendor="The XFree86 Project"
>         compiled for 4.3.99.12, module version = 1.1.1
>         Module class: XFree86 Video Driver
>         ABI class: XFree86 Video Driver, version 0.7
> 
> >From /var/log/XFree86.1.log:
> (II) LoadModule: "fbdev"
> (II) Loading /usr/X11R6/lib/modules-dri-trunk/drivers/fbdev_drv.o
> (II) Module fbdev: vendor="The XFree86 Project"
>         compiled for 4.3.0, module version = 0.1.0
>         ABI class: XFree86 Video Driver, version 0.6
> 
> >From /etc/X11/XF86Config-4  (accelerated)
> Section "Device"
>         Identifier      "Matrox G550"
>         Driver          "mga"
>         BusID           "PCI:01:00:0"
>         Option          "UseFBDev"              "true"

without "UseFBDev here i get the "mga" screen of both fb's
and if i run matroxset after "mga" is started ," mga" goes blank
or distored, if i start the "fb" i get lock up

with "UseFBDev activated everything works,
running matroxset doesn't affect "mga"
(there might be short blanking but i couldn't see as
i used the switch with only one monitor )
starting "fb" works OK  

>         Option          "HWcursor" "off"   #avoid cursor corruption
>         Option          "AGPMode" "2"      #Faster 3D...
>         Option          "DRIReinit"        #Possibly several servers with
> DRI
> EndSection
> 
> The last option because someone on the net got DRI working on two
> matrox cards, (PCI+AGP) but only one at a time, unfortunately.
> 
> >From /etc/X11/xf86config-4 (fbdev)
> Section "Device"
>         Identifier      "Matrox G550"
>         Driver          "fbdev"
> #       BusID           "PCI:01:00:1"
>         Option          "UseFBDev"              "true"
>         Option          "fbdev"                 "/dev/fb/1"
> 
>         Option          "HWcursor" "off"   #avoid cursor corruption       
> 
> EndSection
> 
> Using BusID here doesn't work.  The two files are otherwise
> identical except that they specify different mice.

So, in a recap :-)
(for the howto )

1.)
don't use matrox's closed source driver (mga_hall_drv)
it doesn't support linux-2.6 && the new FB API
do use the original XFree driver

2.)
do activate 
Option "useFBDev" "true" 
for the accelerated head 
(? does this option affect "fbdev" unaccelerated head ? )

3.)
get matroxset, build it and install it
install also the swapped script from the tarball

4.)
convince xdm/kdm/gdm to run swapped  at every X server
start/restart
for xdm/kdm Xsetup
?for gdm ? wrapper? is there smth like Xsetup used by gdm ?

best,

svetljo

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