It seems it's not depend on config. Tried 800x600 frremebuffer in QEMU
X.Org X Server 1.20.8 X Protocol Version 11, Revision 0 Build Operating System: Linux 4.9.0-11-amd64 m68k Debian Current Operating System: Linux quadra800 5.6.0-1-m68k #1 Debian 5.6.7-1 (2020-04-29) m68k Kernel command line: console=ttyS0 root=/dev/sda2 Build Date: 31 March 2020 10:14:40AM xorg-server 2:1.20.8-2 (https://www.debian.org/support) Current version of pixman: 0.36.0 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: Mon May 18 07:24:13 2020 (==) Using system config directory "/usr/share/X11/xorg.conf.d" (==) ServerLayout "FBLayout" (**) |-->Screen "FBScreen" (0) (**) | |-->Monitor "MacMonitor" (**) | |-->Device "MacFB" (==) Automatically adding devices (==) Automatically enabling devices (==) Automatically adding GPU devices (==) Max clients allowed: 256, resource mask: 0x1fffff (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. Entry deleted from font path. (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, built-ins (==) ModulePath set to "/usr/lib/xorg/modules" (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. (II) Loader magic: 0xd01f5468 (II) Module ABI versions: X.Org ANSI C Emulation: 0.4 X.Org Video Driver: 24.1 X.Org XInput driver : 24.1 X.Org Server Extension : 10.0 (--) using VT number 4 (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration (II) no primary bus or device found (II) LoadModule: "glx" (II) Loading /usr/lib/xorg/modules/extensions/libglx.so (II) Module glx: vendor="X.Org Foundation" compiled for 1.20.8, module version = 1.0.0 ABI class: X.Org Server Extension, version 10.0 (II) LoadModule: "fbdev" (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so (II) Module fbdev: vendor="X.Org Foundation" compiled for 1.20.0, module version = 0.5.0 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 24.0 (II) FBDEV: driver for framebuffer: fbdev (WW) Falling back to old probe method for fbdev (II) Loading sub module "fbdevhw" (II) LoadModule: "fbdevhw" (II) Loading /usr/lib/xorg/modules/libfbdevhw.so (II) Module fbdevhw: vendor="X.Org Foundation" compiled for 1.20.8, module version = 0.0.2 ABI class: X.Org Video Driver, version 24.1 (II) FBDEV(0): using /dev/fb0 (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support (**) FBDEV(0): Depth 24, (--) framebuffer bpp 32 (==) FBDEV(0): RGB weight 888 (==) FBDEV(0): Default visual is TrueColor (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0) (II) FBDEV(0): hardware: DAFB (video memory: 468kB) (DB) xf86MergeOutputClassOptions unsupported bus type 0 (**) FBDEV(0): Option "fbdev" "/dev/fb0" (II) FBDEV(0): checking modes against framebuffer device... (II) FBDEV(0): checking modes against monitor... (II) FBDEV(0): Virtual size is 800x600 (pitch 800) (**) FBDEV(0): Built-in mode "current": 48.0 MHz, 46.9 kHz, 75.1 Hz (II) FBDEV(0): Modeline "current"x0.0 48.00 800 832 928 1024 600 604 608 624 -hsync -vsync -csync (46.9 kHz b) (==) FBDEV(0): DPI set to (96, 96) (II) Loading sub module "fb" (II) LoadModule: "fb" (II) Loading /usr/lib/xorg/modules/libfb.so (II) Module fb: vendor="X.Org Foundation" compiled for 1.20.8, module version = 1.0.0 ABI class: X.Org ANSI C Emulation, version 0.4 (**) FBDEV(0): using shadow framebuffer (II) Loading sub module "shadow" (II) LoadModule: "shadow" (II) Loading /usr/lib/xorg/modules/libshadow.so (II) Module shadow: vendor="X.Org Foundation" compiled for 1.20.8, module version = 1.1.0 ABI class: X.Org ANSI C Emulation, version 0.4 (EE) FBDEV(0): FBIOPUT_VSCREENINFO succeeded but modified mode (EE) FBDEV(0): mode initialization failed (EE) Fatal server error: (EE) AddScreen/ScreenInit failed for driver 0 (EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file. пн, 18 мая 2020 г. в 13:05, Laurent Vivier <[email protected]>: > > Le 18/05/2020 à 09:46, John Paul Adrian Glaubitz a écrit : > > On 5/18/20 9:44 AM, Alexander Voropay wrote: > >> I'm trying to run Xorg server on the git QEMU on the current Sid. > >> It fails on fb device setting > >> > >> QEMU graphic related options: > >> -g 1200x800x24 -display gtk > >> > >> fd console works. /dev/fb0/ device works > >> (i.e. "cat /dev/urandom > /dev/fb0" fills "nubus-macfb" > >> with random dots :) ) > > > > I have never tried Xorg on qemu-m68k but Laurent might be able to give you > > some more hints. > > > > Adrian > > > > > With debian/etch-m68k I used the attached xorg.conf file. Never tried > with debian/sid. > > Thanks, > Laurent

