[Q] chroot + framebuffer [Ainol Fire][Android 4.0.4] - Android Q&A, Help & Troubleshooting

Hi, I'm trying to force Xorg to use /dev/grapgics/fb0 of android. Android's /dev is binded to chroot's /dev.
When I run "cat /dev/urandom > /dev/graphics/fb0" in chroot I see random color pixels on screen, but I can't setup Xorg to properly to use fb0.
I'm using "setprop ctl.stop media && setprop ctl.stop zygote" to kill Android ui to avoid using fb0. After starting Xorg i cant see any changes on screen.
[device: Ainol Fire, A4.0.4(feiyu), Mali400Mp2, 1280x800]
Any ideas what im doing wrong?
Xorg.conf:
Code:
Section "ServerLayout"
Identifier "Default"
Screen 0 "Default Screen" 0 0
# InputDevice "Touchscreen" "CorePointer"
EndSection
#Section "InputDevice"
# Identifier "Touchscreen"
# Driver "tslib"
# Option "Device" "/dev/input/event5"
#EndSection
Section "Device"
Identifier "Configured Video Device"
Driver "fbdev"
Option "fbdev" "/dev/graphics/fb0"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
DisplaySize 1280 800
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
EndSection
Section "ServerFlags"
Option "DefaultServerLayout" "Default"
Xorg log on pastebin: "Wngrb9D7" (I can't post url)

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Hi, on my Samsung Galaxy Tab 2 10.1" I have a running X11 with this config.
Code:
[email protected]:/# cat /etc/X11/xorg.conf
Section "ServerLayout"
Identifier "Layout0"
Screen "Screen0"
#InputDevice "Mouse0" "CorePointer"
InputDevice "cyttsp-i2c" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "evdev"
#Option "Device" "/dev/input/event7"
Option "Device" "/dev/input/event9"
Option "Protocol" "usb"
EndSection
Section "InputDevice"
Identifier "Mouse0"
#Driver "evdev"
Driver "mouse"
Option "Protocol" "IMPS/2"
#Option "Device" "/dev/input/event0"
Option "Device" "/dev/input/mice"
#Option "Protocol" "usb"
EndSection
Section "InputDevice"
Identifier "cyttsp-i2c"
Driver "multitouch"
Option "Device" "/dev/input/event0"
# mouse should move as fast as finger and not faster
Option "AccelerationScheme" "none"
# evdev has it, multitouch doesn't so it behaves like touchpad
# Option "IgnoreRelativeAxes" "True"
EndSection
Section "Device"
Identifier "Card0"
Driver "fbdev"
Option "fbdev" "/dev/graphics/fb0"
VendorName "Unknown"
BoardName "Unknown"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1024x600_60.00"
EndSubSection
EndSection
Section "ServerFlags"
Option "AutoAddDevices" "false"
EndSection
I hope it helps

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I tried with conf like this and still is something wrong, can you post xorg.conf.d conf files and xorg.0.log? (or pm)

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AW: [Q] chroot + framebuffer [Ainol Fire][Android 4.0.4]
Try to shutdown surfaceflinger with:
setprop ctl.stop surfaceflinger
May thats the problem...
Sent from my GT-S5830 using xda app-developers app

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Only screen frezee, nothing changed on screen/buffer like a xorg cant acces to fb (im pretty sure about this). In log I cant see anything about fbdevhw, maybe it is related to problem?
//edit
On gt540 (Android 2.3.7) it works without killing android, screen goes black and xorg starts successfully, but msm7227 needs something to refresh screen (i can see desktop when im killing xorg and zygote+media gets back framebuffer). So is there any other part of android (killed zygote, media, drm, surfaceflinger) using framebuffer in Android 4.0.4 ?
//edit
Partial success, xorg is using framebuffer, but there is an errror
Anybody know how to fix it?
Code:
[[email protected] /]# xinit -- :0 ttyS0 vt1 -verbose
This is a pre-release version of the X server from The X.Org Foundation.
It is not supported in any way.
Bugs may be filed in the bugzilla at http://bugs.freedesktop.org/.
Select the "xorg" product for bugs you find in this release.
Before reporting bugs in pre-release versions please check the
latest version in the X.Org Foundation git repository.
See http://wiki.x.org/wiki/GitPage for git access instructions.
X.Org X Server 1.13.2.901 (1.13.3 RC 1)
Release Date: 2013-02-15
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.2.34-1-FARM armv7l
Current Operating System: Linux localhost 3.0.8 #3 SMP PREEMPT Wed Nov 14 11:26:15 CST 2012 armv7l
Kernel command line: init=/init console=ttyS0,115200n8 hlt no_console_suspend vmalloc=256m mem=1024m logo=osd1,loaded,panel,debug hdmitx=vdacoff,powermode1,unplug_powerdown a9_clk_max=1512000000
Build Date: 24 February 2013 12:25:58AM
Current version of pixman: 0.28.2
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 Mar 11 09:08:09 2013
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using config directory: "/etc/X11/xorg.conf.d"
(**) ServerLayout "Layout0"
(**) |-->Screen "DefaultScreen" (0)
(**) | |-->Monitor "Configured Monitor"
(**) | |-->Device "Mali FBDEV"
(==) Automatically adding devices
(==) Automatically enabling devices
(==) Automatically adding GPU devices
(WW) The directory "/usr/share/fonts/TTF/" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/share/fonts/OTF/" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/share/fonts/Type1/" does not exist.
Entry deleted from font path.
(==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
(==) ModulePath set to "/usr/lib/xorg/modules"
(**) Extension "Composite" is disabled
(**) Extension "RENDER" is enabled
(II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
Initializing built-in extension Generic Event Extension
Initializing built-in extension SHAPE
Initializing built-in extension MIT-SHM
Initializing built-in extension XInputExtension
Initializing built-in extension XTEST
Initializing built-in extension BIG-REQUESTS
Initializing built-in extension SYNC
Initializing built-in extension XKEYBOARD
Initializing built-in extension XC-MISC
Initializing built-in extension SECURITY
Initializing built-in extension XINERAMA
Initializing built-in extension XFIXES
Initializing built-in extension RENDER
Initializing built-in extension RANDR
Initializing built-in extension COMPOSITE
Initializing built-in extension DAMAGE
Initializing built-in extension MIT-SCREEN-SAVER
Initializing built-in extension DOUBLE-BUFFER
Initializing built-in extension RECORD
Initializing built-in extension DPMS
Initializing built-in extension X-Resource
Initializing built-in extension XVideo
Initializing built-in extension XVideo-MotionCompensation
Initializing built-in extension XFree86-VidModeExtension
Initializing built-in extension XFree86-DGA
Initializing built-in extension XFree86-DRI
Initializing built-in extension DRI2
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="X.Org Foundation"
compiled for 1.13.2.901, module version = 1.0.0
(==) AIGLX enabled
Loading extension GLX
(II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
(II) Module fbdev: vendor="X.Org Foundation"
compiled for 1.13.0, module version = 0.4.3
(II) FBDEV: driver for framebuffer: fbdev
(++) using VT number 1
(WW) Falling back to old probe method for fbdev
(II) Loading /usr/lib/xorg/modules/libfbdevhw.so
(II) Module fbdevhw: vendor="X.Org Foundation"
compiled for 1.13.2.901, module version = 0.0.2
(II) FBDEV(0): using /dev/graphics/fb0
(WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
(**) FBDEV(0): Depth 32, (--) framebuffer bpp 32
(EE) FBDEV(0): Weight given (000) is inconsistent with the depth (32)
(EE) Screen(s) found, but none have a usable configuration.
Fatal server error:
no screens found
(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)
Server terminated with error (1). Closing log file.
xinit: giving up
xinit: unable to connect to X server: Connection refused
xinit: server error
[[email protected] /]#

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So it works (24bit depth), touch as touchpad, usb keyboard/mouse works too (only if connected before startx).
And first time i get sound working in chroot (visible as pcm card) but works only with rhytmbox playing mp3 stream, when i try to play mp3 file i get gstreamer backend error (not enough data). Sound works too with flash player (10.1).

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I have the same tab as you (ainol fire, F-0506 A4.2.2) and want to get ubuntu working on my device. I faced with the same problem: Xorg don't want work with my fb0. So I want know: how you solved this problem?
Sorry for my bad English
EDIT
Framebuffer works, I can see some parts of full picture, but not full. I use gnome environment and all i see is mouse pointer that doesn't respond and Hide all buttom in left bottom corner. What I am doing wrong?
EDIT
Yes, I completely right, fb works, but with lags. I don't know why.. may be this lag is in cause of using new feiyu's kernel.. I take a photo of screen but I can't show them.
Also after I choose (I MADE IT!) Shut down - my fire freeze & I can't doing anything except restart my device.