DisplayLink: Cannot run in framebuffer mode. Please specify busIDs for all framebuffer devices
Submitted by Nathan Typanski
Assigned to Xorg Project Team
Description
I'm using xorg-server 1.14.1 and xf86-video-fbdev 0.4.3 on linux 3.9.4 with udlfb.
I'm trying to run a multi-monitor setup with Xinerama and xf86-video-fbdev as the driver of the external monitor.
So I have a configured xorg.conf that sets up separate screens/monitors/devices and puts both screens in a serverlayout with Xinerama:
Section "ServerLayout" Identifier "Layout0" Screen 0 "DisplayLinkScreen" 0 0 Screen 1 "ThinkPadScreen" LeftOf "DisplayLinkScreen" Option "Xinerama" "1" EndSection
Section "Monitor"
1600x900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 119.00 MHz
Identifier "ThinkPadMonitor"
VendorName "Unknown"
ModelName "AU Optronics Corporation"
HorizSync 36.5 - 54.7
VertRefresh 40.0 - 60.0
ModeLine "1600x900_60.00" 119.00 1600 1696 1864 2128 900 901 904 932 -hsync +vsync
Option "DPMS"EndSection
Section "Device" Identifier "IntelCard" Driver "intel" Option "AccelMethod" "sna" EndSection
Section "Screen" Identifier "ThinkPadScreen" Device "IntelCard" Monitor "ThinkPadMonitor" DefaultDepth 24 Option "Stereo" "0" Option "metamodes" "1600x900_60 +0+0" SubSection "Display" Depth 24 EndSubSection EndSection
Section "Device" Identifier "DisplayLinkDevice" Driver "fbdev" BusID "USB" Option "fbdev" "/dev/fb1" EndSection
Section "Monitor" Identifier "DisplayLinkMonitor" EndSection
Section "Screen" Identifier "DisplayLinkScreen" Device "DisplayLinkDevice" Monitor "DisplayLinkMonitor" DefaultDepth 16 SubSection "Display" Depth 16 Modes "1366x768" EndSubSection EndSection
When run, it fails with the log:
X.Org X Server 1.14.1 Release Date: 2013-04-17 [ 47991.450] X Protocol Version 11, Revision 0 [ 47991.451] Build Operating System: Linux 3.8.7-1-ARCH x86_64 [ 47991.451] Current Operating System: Linux 3.9.4-1-ARCH #1 SMP PREEMPT Sat May 25 16:14:55 CEST 2013 x86_64 [ 47991.452] Kernel command line: root=/dev/sda8 rw acpi_backlight=vendor acpi_osi=Linux [ 47991.453] Build Date: 17 April 2013 02:37:06PM [ 47991.454] [ 47991.454] Current version of pixman: 0.30.0 [ 47991.456] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 47991.456] Markers: (--) probed, () from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 47991.459] (==) Log file: "/var/log/Xorg.2.log", Time: Tue Jun 4 19:20:13 2013 [ 47991.459] (==) Using config file: "/etc/X11/xorg.conf" [ 47991.460] (==) Using config directory: "/etc/X11/xorg.conf.d" [ 47991.460] (==) ServerLayout "Layout0" [ 47991.460] () |-->Screen "DisplayLinkScreen" (0) [ 47991.460] () | |-->Monitor "DisplayLinkMonitor" [ 47991.460] () | |-->Device "DisplayLinkDevice" [ 47991.460] () |-->Screen "ThinkPadScreen" (1) [ 47991.460] () | |-->Monitor "ThinkPadMonitor" [ 47991.460] () | |-->Device "IntelCard" [ 47991.460] () Option "Xinerama" "1" [ 47991.460] (==) Automatically adding devices [ 47991.460] (==) Automatically enabling devices [ 47991.460] (==) Automatically adding GPU devices [ 47991.460] (**) Xinerama: enabled [ 47991.460] (==) FontPath set to: /usr/share/fonts/misc/, /usr/share/fonts/TTF/, /usr/share/fonts/OTF/, /usr/share/fonts/Type1/, /usr/share/fonts/100dpi/, /usr/share/fonts/75dpi/ [ 47991.460] (==) ModulePath set to "/usr/lib/xorg/modules" [ 47991.460] (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. [ 47991.460] (II) Loader magic: 0x7fcc20 [ 47991.460] (II) Module ABI versions: [ 47991.460] X.Org ANSI C Emulation: 0.4 [ 47991.460] X.Org Video Driver: 14.1 [ 47991.460] X.Org XInput driver : 19.1 [ 47991.460] X.Org Server Extension : 7.0 [ 47991.461] (II) config/udev: Adding drm device (/dev/dri/card0) [ 47991.462] (--) PCI:*(0:0:2:0) 8086:0126:17aa:21d0 rev 9, Mem @ 0xf1400000/4194304, 0xe0000000/268435456, I/O @ 0x00006000/64 [ 47991.462] Initializing built-in extension Generic Event Extension [ 47991.463] Initializing built-in extension SHAPE [ 47991.464] Initializing built-in extension MIT-SHM [ 47991.464] Initializing built-in extension XInputExtension [ 47991.465] Initializing built-in extension XTEST [ 47991.466] Initializing built-in extension BIG-REQUESTS [ 47991.466] Initializing built-in extension SYNC [ 47991.467] Initializing built-in extension XKEYBOARD [ 47991.468] Initializing built-in extension XC-MISC [ 47991.468] Initializing built-in extension SECURITY [ 47991.469] Initializing built-in extension XINERAMA [ 47991.470] Initializing built-in extension XFIXES [ 47991.470] Initializing built-in extension RENDER [ 47991.471] Initializing built-in extension RANDR [ 47991.472] Initializing built-in extension COMPOSITE [ 47991.472] Initializing built-in extension DAMAGE [ 47991.473] Initializing built-in extension MIT-SCREEN-SAVER [ 47991.473] Initializing built-in extension DOUBLE-BUFFER [ 47991.474] Initializing built-in extension RECORD [ 47991.475] Initializing built-in extension DPMS [ 47991.475] Initializing built-in extension X-Resource [ 47991.476] Initializing built-in extension XVideo [ 47991.476] Initializing built-in extension XVideo-MotionCompensation [ 47991.477] Initializing built-in extension XFree86-VidModeExtension [ 47991.477] Initializing built-in extension XFree86-DGA [ 47991.478] Initializing built-in extension XFree86-DRI [ 47991.479] Initializing built-in extension DRI2 [ 47991.479] (II) LoadModule: "glx" [ 47991.479] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so [ 47991.479] (II) Module glx: vendor="X.Org Foundation" [ 47991.479] compiled for 1.14.1, module version = 1.0.0 [ 47991.479] ABI class: X.Org Server Extension, version 7.0 [ 47991.479] (==) AIGLX enabled [ 47991.479] Loading extension GLX [ 47991.479] (II) LoadModule: "fbdev" [ 47991.479] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so [ 47991.479] (II) Module fbdev: vendor="X.Org Foundation" [ 47991.479] compiled for 1.14.0, module version = 0.4.3 [ 47991.479] Module class: X.Org Video Driver [ 47991.479] ABI class: X.Org Video Driver, version 14.1 [ 47991.480] (II) LoadModule: "intel" [ 47991.480] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so [ 47991.480] (II) Module intel: vendor="X.Org Foundation" [ 47991.480] compiled for 1.14.1, module version = 2.21.8 [ 47991.480] Module class: X.Org Video Driver [ 47991.480] ABI class: X.Org Video Driver, version 14.1 [ 47991.480] (II) FBDEV: driver for framebuffer: fbdev [ 47991.480] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, [...] [ 47991.480] (++) using VT number 2
[ 47991.480] (WW) Falling back to old probe method for fbdev [ 47991.480] (II) Loading sub module "fbdevhw" [ 47991.480] (II) LoadModule: "fbdevhw" [ 47991.480] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so [ 47991.480] (II) Module fbdevhw: vendor="X.Org Foundation" [ 47991.480] compiled for 1.14.1, module version = 0.0.2 [ 47991.480] ABI class: X.Org Video Driver, version 14.1 [ 47991.480] (II) FBDEV(0): using /dev/fb1 [ 47991.481] Fatal server error: [ 47991.481] Cannot run in framebuffer mode. Please specify busIDs for all framebuffer devices [ 47991.481] [ 47991.481] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 47991.481] (EE) Please also check the log file at "/var/log/Xorg.2.log" for additional information. [ 47991.481] (EE) [ 47991.484] Server terminated with error (1). Closing log file.
Commenting out one of the screens from the ServerLayout works. Both work individually this way. Both, with or without Xinerama, fails with this error. My device, of course, has no BusID (USB), which is (sort of) referenced in fbdev.c line 331:
/* XXX what about when there's no busID set? */Not sure if that has anything to do with it, but hey. If have tested this with intel, nouveau, and nvidia drivers for my main card and still get the same problem. I've tested this with the new udl module too, and it didn't work, but I'm not including that in this report or reporting it immediately as I'm not sure yet if it's a xorg driver problem or a kernel issue.
Version: 7.7 (2012.06)