Info about X-architecture

Tue Oct 5 21:44:32 PDT 2010

On Tue, 2010-10-05 at 15:39 +0900, Carsten Haitzler wrote:
> On Tue, 05 Oct 2010 12:08:59 +0530 vijay singh <testmrs.evo at gmail.com> said:
> 
> > On Tue, 2010-10-05 at 15:26 +0900, Carsten Haitzler wrote:
> > > On Tue, 05 Oct 2010 11:45:10 +0530 vijay singh <testmrs.evo at gmail.com> said:
> > > 
> > > no fbdev driver. it's there in the error output. did you not build/install
> > > one? is ther an fb device from the kernel?
> > Bootlog i can see Fb is initialize..
> > 
> > arm11fb driver initializing..
> > Allocated 1 buffer(s)
> > arm11fb regs mapped @:cc820000, fb mapped @:fde00000
> > arm11fb0: arm11fb frame buffer device
> > 
> > do i have to create device node or some other way i can try.
> 
> xorg fbdev driver module - not kernel. u also need kernel fb support - /dev/fb*
> should indicate u have device nodes for it if they are there.
It looks xorg fbdev module is not compiled properly. (I am trying to
recompile)
Is their anywhere xorg module available for armv6 architecture ??
currently i can't see device node for fb in /dev 
What is that mean ??

> 
> > > > Hi,
> > > > Thanks for info..
> > > > 
> > > > I have below HW system :
> > > > Main CPU : ARM11
> > > > Graphic Card : SGX535.
> > > > 
> > > > Currently in my first step i want startx should run & then xterm.
> > > > 
> > > > When i try to run startx on target below is error :
> > > > ========================================================================
> > > > auth:  creating new authority file /root/.serverauth.948
> > > > _XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
> > > > _XSERVTransOpen: transport open failed for inet6/ARM11SMP-NEMID:0
> > > > _XSERVTransMakeAllCOTSServerListeners: failed to open listener for
> > > >  inet6   X.Org X Server 1.8.2 Release Date: 2010-07-01 X Protocol
> > > > Version 11, Revision 0 Build Operating System: Linux 2.6.32-24-generic
> > > > i686 Current Operating System: Linux ARM11SMP 2.6.34.6 #1 SMP Mon Sep 20
> > > > 13:47:32 CEST 2010 armv6l Kernel command line: console=ttyS0,115200n8n
> > > > mem=192M maxcpus=2 rootwait root=/d ev/sda1 lpj=1994752 Build Date: 01
> > > > October 2010  06:31:51PM   
> > > > Current version of pixman: 0.17.6
> > > >       Before reporting problems, check http://wiki.x.org         to make
> > > > sure that you have the latest version. Markers: (--) probed, (**) from
> > > > config file, (==) default setting,         (++) from command line, (!!)
> > > > notice, (II) informational,         (WW) warning, (EE) error, (NI) not
> > > > implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time:
> > > > Thu Jan  1 01:04:31 1970 
> > > > Primary device is not PCI (==) Using default built-in configuration (12
> > > > lines) 
> > > > (EE) Failed to load module "fbdev" (module does not exist, 0)
> > > > (EE) No drivers available.   Fatal server error: no screens found  
> > > >  Please consult the The X.Org Foundation support          at
> > > > http://wiki.x.org for help. Please also check the log file at
> > > > "/var/log/Xorg.0.log" for additional informati on.   giving up. xinit:
> > > > No such file or directory (errno 2):  unable to connect to X server
> > > > xinit:  No such process (errno 3):  Server error
> > > > ==========================================================================
> > > > 
> > > > Any idea what is missing ??
> > > > 
> > > > Cheers--
> > > > 
> > > > 
> > > > 
> > > > On Tue, 2010-10-05 at 07:30 +0900, Carsten Haitzler wrote:
> > > > > On Mon, 4 Oct 2010 09:48:36 -0700 Corbin Simpson
> > > > > <mostawesomedude at gmail.com> said:
> > > > > 
> > > > > indeed. most hw i have ever seen in embedded has a memory mapped dumb
> > > > > fb as part of the main memory - the kernel should already support this-
> > > > > if so x will work just fine (fb drvier). it will work exactly as well
> > > > > as it does on a desktop or laptop - just no acceleration. this of
> > > > > course depends if you HAVE any hardware that can do acceleration on
> > > > > your SoC. even then - is it useful? at worst it may simply be you ave
> > > > > multiple fb's (yuv over/underlay, rgb layer (8/16/32bpp) and have to
> > > > > configure them correctly on  init and use the right one to get sensible
> > > > > gfx. xv (yuv layer) may not work in this dumb mode without some driver
> > > > > work.
> > > > > 
> > > > > your problems really begin when trying to do the yuv support and then
> > > > > acceleration - if your SoC has anything.. and the big problems begin
> > > > > with 3D if your SoC has a 3D unit. at this point you'll want to  have
> > > > > your SoC vendor be helping you out.
> > > > > 
> > > > > > Which hardware, specifically? If Linux has already been ported, and a
> > > > > > framebuffer driver exists, then X will work perfectly already, using
> > > > > > the "fbdev" X driver.
> > > > > > 
> > > > > > Sending from a mobile, pardon the brevity. ~ C.
> > > > > > 
> > > > > > On Oct 4, 2010 3:18 AM, "vijay singh" <testmrs.evo at gmail.com> wrote:
> > > > > > > On Mon, 2010-10-04 at 13:11 +0300, Timo Juhani Lindfors wrote:
> > > > > > >> vijay singh <testmrs.evo at gmail.com> writes:
> > > > > > >> > I would like to know is their any document available which will
> > > > > > >> > explain about X-architecture.
> > > > > > >>
> > > > > > >> Even just http://en.wikipedia.org/wiki/X_Window_System gives a
> > > > > > >> rough
> > > > > > overview.
> > > > > > >>
> > > > > > >> > if i want to add any new X-client then what is the way.
> > > > > > >>
> > > > > > >> Things like evolution and firefox usually work as X clients on
> > > > > > >> gnu/linux. You can take a look at them or google for "GTK hello
> > > > > > >> world" or "QT hello world" to get something simpler.
> > > > > > >>
> > > > > > > Thanks for the info..
> > > > > > >
> > > > > > > If i want to build test filesystem for new HW (In my case it is
> > > > > > > ARM11)where some basics X-client (xterm,xeyes..) should work, in
> > > > > > > this case how i should configure X to work.
> > > > > > >
> > > > > > > If more details about what all kernel dependency, how X can be test
> > > > > > > will be helpful.
> > > > > > >
> > > > > > >>
> > > > > > >
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > xorg at lists.freedesktop.org: X.Org support
> > > > > > > Archives: http://lists.freedesktop.org/archives/xorg
> > > > > > > Info: http://lists.freedesktop.org/mailman/listinfo/xorg
> > > > > > > Your subscription address: mostawesomedude at gmail.com
> > > > > 
> > > > > 
> > > > 
> > > > 
> > > 
> > > 
> > 
> > 
> 
>