SGI O2 kernel fb driver vs Xserver

[Michel Dänzer]

On Sun, 2009-03-08 at 18:17 +0300, Андрей Рандрианасулу wrote:
> 
> -----Original Message-----
> From: Андрей Рандрианасулу<randrianasulu at mail.ru>
> To: xorg at lists.freedesktop.org
> Date: Sun, 08 Mar 2009 15:00:32 +0300
> Subject: SGI O2 kernel fb driver vs Xserver
> 
> > Hi list!
> > 
> > I have SGI O2 workstation, and gentoo Linux distro 
> > installed in root-on-NFS mode. Kernel - self-compiled 2.6.29-rc5-0300 (with gcc-4.3.3), system was mostly recompiled with glibc-2.9, gcc 4.3.3, binutils 2.19.1. Console apps works fine, in framebuffer mode (1024x768-24 at 75, allocation of 4mb RAM was defined  at compile time).
> > 
> > But xserver (1.5.3 + gentoo patches) gives me error:
> > 
> > (EE) FBDEV(0): FBIOPUT_VSCREENINFO succeeded but modified mode                  
> > (EE) FBDEV(0): mode initialization failed
> > 
> > I think this msg comes from hw/xfree86/fbdevhw/fbdevhw.c and was added in late 2006
> > 
> > commit f6815cb68b0f6698497348fc6e4214dacef33b95
> > Author: Michel DÃ?nzer <michel at tungstengraphics.com>
> > Date:   Sat Dec 30 10:18:28 2006 +0100
> > 
> >     fbdevhw: Consolidate modeset ioctl calling, report failure if it modifies mo
> > de.
> > 
> > Google points me at https://bugzilla.novell.com/show_bug.cgi?id=285523 , i'm in process of rebuilding xserver (just 1.5.3, without gentoo-specific patches) with debug set to 1. If i run into same kind of bug - it should be fixed on kernel (fb driver) side?
> > 
> > i'll open freedesktop.org bug with additional info, when compilation finishes ... 
> > (at least some kernel fb drivers give very same error message - 
> > http://www.mail-archive.com/debian-arm@lists.debian.org/msg09406.html)
> 
> small update - 
> 
> sgio2 xorg-server-1.5.3 # X
> 
> X.Org X Server 1.5.3
> Release Date: 5 November 2008
> X Protocol Version 11, Revision 0
> Build Operating System: Linux 2.6.29-rc6-00217-g823b387 mips64 
> Current Operating System: Linux sgio2 2.6.29-rc6-00217-g823b387 #11 Tue Mar 3 13:52:25 GMT 2009 mips64
> Build Date: 08 March 2009  01:06:00PM
>  
>         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: "/usr/var/log/Xorg.0.log", Time: Sun Mar  8 17:38:05 2009
> (==) Using config file: "/etc/X11/xorg.conf"
> (EE) Failed to load module "summa" (module does not exist, 0)
> fbdevHW: Init 0
> fbdevHW: VerifyModes 0
> fbdevHW: UseBuildinMode 0
> fbdevHW: MapVidmem 0
> fbdevHW: LinearOffset 0
> fbdevHW: Save 0
> fbdevHW: SetMode 0
> xfree init mode:        25172   640 657 753 800   480 491 493 525
> fbdev init mode:        39726   640 17 96 47   480 11 2 32   32 8:8:8
> (EE) FBDEV(0): FBIOPUT_VSCREENINFO succeeded but modified mode
> fbdev returned mode:    39726   640 18 96 46   480 12 2 31   32 8:8:8
> (EE) FBDEV(0): mode initialization failed

It does look like the kernel framebuffer device may be broken, though
you could also try xserver 1.6, some of these checks have been relaxed a
little.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer