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

[Svetoslav S. <sv...@gm...>]

> Svetoslav Slavtchev wrote:
> > Hi,
> > 
> > 
> >>Yesterday I got two xservers running with 2.6.0-test6-ruby
> >>Both screens are connected to the matrox G550.
> >>The one running on the main console uses the normal
> >>accelerated X server, and a keyboard connected to the mouse port.
> >>The X config for this display isn't modified, it is
> >>the single-user setup I always had.
> >>
> >>The other screen uses the unaccelerated framebuffer driver
> >>on /dev/fb/1, and a keyboard connected to the normal keyboard
> >>connector.  Both mice are serial.
> >>
> >>Framebuffer X was easy to set up.  The first attempt was right,
> >>except it didn't work until I got the matroxset program
> >>that must be used to decide which framebuffer is displayed
> >>to which connector.  (The default is to see the first
> >>framebuffer on both!)  I haven't made startup scripts
> >>yet, so I start the second Xserver from an xterm.
> > 
> > 
> > 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.  

it would be nice :-)
i'll try to get it running in the weekend 

> > 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.

do they already include the XFree-PrefBusID patch ?
(would be really nice addition in the howto)
or do you use the video hack ?

> 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
> 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. 

i've beiing using it for a long time 
mga accelled + Nvidia TNT2 Nvdia GL libs,
but when i tried mga acceled + fb/ 2xfb
i can not get it running :(
probably i didn't played enough with matroxset
(
i remmember trying to get Miguel solutions before a year may be,
and X did started, but i loosed my mices ?
)

> > 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"

using the matrox driver
with this turned off i got X using 100% cpu and nothing on the screen
with this turned on not sure, but the same or imediate lock up

> 
>         Option          "HWcursor" "off"   #avoid cursor corruption
>         Option          "AGPMode" "2"      #Faster 3D...

>         Option          "DRIReinit"        #Possibly several servers with
> DRI

never tried that

> 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

same here

> 
> Using BusID here doesn't work.  The two files are otherwise
> identical except that they specify different mice.
> 
> > if i try to start accelerated X,
> > X doesn't want to start and is eating ~100% of the cpu
> Ouch.  I haven't seen that happen.
> 
> > X on fbdev seems to start, but no output to Monitor 
> Make sure you use matroxset so both framebuffers are visible.
> You can do this without running X, cat a few megs of garbage
> to both framebuffers first so they won't be all black.
> Then experiment with matroxset.

will experiment with this :-)

> > 
> > 
> >>I did nothing special with the sound setup.  Both
> >>screens are positioned between a shared pair of
> >>speakers.  The alsa drivers for my trident 4D NX supports
> >>several simultaneous users and does its own mixing.
> >>
> >>The long term plan is to use two accelerated X servers.
> >>Ideally by getting acceleration on both heads - but that
> >>seems very unlikely.  The second best solution seems
> >>to be a pci graphichs card.  I am waiting, hoping to find
> >>some pci card that supports DRI in such a way that
> >>I can use DRI on both screens simultaneously.
> > 
> > 
> > two things here:
> > 1.) DRI doesn't support multiple cards
> > (and it doesn't seems this to be on the TODO list
> >  of the DRI developers)
> Too bad.  Theoretically this should be _trivial_ for
> dual-seat two-card setups, because the two xservers are
> fully independent and so are the two graphichs cards.
> I wonder what they are running up against.
> 
> Of course the much more common case of one seat, several
> cards aren't that easy - but I'm not trying for that.

Hi Hi

Theoretically there are about 15-20 users(known to me) of such system,
and i doubt that someone complained about the problem.

there was a guy who wanted to get it running for some kind of commersial
system/ project,
i think he didn't needed multiple users, not sure about Xinerama, but
on the dri-devel list he got advised to ask for commersial support
from one of the developers's X releated company

IIRC the dri developer mentioned that no one thought of developing
such thing, and generally the core itself shouldn't be changed much,
but the X drivers needed major chages, and may be he could make it work with
certain driver
against a paiment


> > only choice is to use Nvidia cards with the closed source driver
>  
> > 2.) even if DRI supported multiple cards
> >  all heads have to be addressable by the driver.
> > with Gxxx DH this doable only with fbdev driver
> > which doesn't support DRI, XV, .....
> Which is why I'll buy a card if I believe it'll work.  Accelerated
> 2D on both screens is nice too, of course.
> > (G200/450 MMS series could work as they have
> > different BusID's, but are untested -- too expensive)
> > 
> Are these effectively two cards in a single slot then?

i assume almost yes,
and i always wanted to get one of the 4 headed one's 
they do have 2/4 G200/G450 chips with separate BusID's on them
  
> >>The questions:
> >>2.6.0-test6-ruby seems to hate framebuffer console, hanging the
> >>machine before the first boot printk if I enable it.
> >>Is framebuffer console possible somehow?
> >>I currently need framebuffer in order to run X.  And a
> >>console is nice to have in case I get X trouble.
> >>I currently only have screen garbage until X starts.
> >>Having some framebuffer consoles on the other screen
> >>would be nice too.  fbcon also has the advantage
> >>that it can be set up with the same video timing as X,
> >>allowing console switching without waiting for the
> >>screen to sync to another frequency.  
> > 
> > 
> > probably it's the matroxfb driver,
> 
> Well, 2.6.0-test6 (without ruby) works fine with
> framebuffer console.  It dies only if I use ruby.

which ruby-2.6 is this ?
the one with real multi-user console, or the earlier
with only multiuser X ?

if it's the first one may be fbcon might get confused
somehow by the 2 fb's on a single card, which might be
not properly initialized without matroxset that early
or might be Aivils did missed smth(but i doubt it)

can you try the earlier patch?


best,

svetljo

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