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#1 2016-08-05 01:11:51

parashep
Member
Registered: 2014-04-20
Posts: 12

video driver reports 0kB VRAM, fails to launch X

I'm working on an IBM ThinkPad i Series 1200 1161 laptop and trying to get accelerated graphics working. it has a SM712 LynxEM+ video adaptor which should be supported by the siliconmotion graphics driver, but...

here's what my Xorg.0.log looks like

[  1232.845] 
X.Org X Server 1.18.4
Release Date: 2016-07-19
[  1232.900] X Protocol Version 11, Revision 0
[  1232.920] Build Operating System: Linux 4.5.4-1-ARCH i686 
[  1232.942] Current Operating System: Linux relic 4.6.4-1-ARCH #1 SMP PREEMPT Mon Jul 11 19:30:13 CEST 2016 i686
[  1232.943] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=63a595e4-a54f-454c-a2cd-c209ce53ff32 rw quiet
[  1233.014] Build Date: 19 July 2016  05:56:07PM
[  1233.038]  
[  1233.062] Current version of pixman: 0.34.0
[  1233.114] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[  1233.114] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[  1233.229] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Aug  4 12:06:09 2016
[  1233.260] (==) Using config file: "/etc/X11/xorg.conf"
[  1233.291] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[  1233.292] (==) ServerLayout "X.org Configured"
[  1233.292] (**) |-->Screen "Screen0" (0)
[  1233.292] (**) |   |-->Monitor "Monitor0"
[  1233.293] (**) |   |-->Device "Card0"
[  1233.293] (**) |-->Input Device "Mouse0"
[  1233.293] (**) |-->Input Device "Keyboard0"
[  1233.293] (==) Automatically adding devices
[  1233.294] (==) Automatically enabling devices
[  1233.294] (==) Automatically adding GPU devices
[  1233.294] (==) Max clients allowed: 256, resource mask: 0x1fffff
[  1233.294] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[  1233.294] 	Entry deleted from font path.
[  1233.294] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
[  1233.294] 	Entry deleted from font path.
[  1233.294] 	(Run 'mkfontdir' on "/usr/share/fonts/100dpi/").
[  1233.294] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
[  1233.294] 	Entry deleted from font path.
[  1233.294] 	(Run 'mkfontdir' on "/usr/share/fonts/75dpi/").
[  1233.294] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[  1233.294] 	Entry deleted from font path.
[  1233.294] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
[  1233.295] 	Entry deleted from font path.
[  1233.295] 	(Run 'mkfontdir' on "/usr/share/fonts/100dpi/").
[  1233.295] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
[  1233.295] 	Entry deleted from font path.
[  1233.295] 	(Run 'mkfontdir' on "/usr/share/fonts/75dpi/").
[  1233.295] (**) FontPath set to:
	/usr/share/fonts/misc/,
	/usr/share/fonts/TTF/,
	/usr/share/fonts/OTF/,
	/usr/share/fonts/misc/,
	/usr/share/fonts/TTF/,
	/usr/share/fonts/OTF/
[  1233.295] (**) ModulePath set to "/usr/lib/xorg/modules"
[  1233.295] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[  1233.295] (WW) Disabling Mouse0
[  1233.295] (WW) Disabling Keyboard0
[  1233.295] (II) Loader magic: 0x82a96c0
[  1233.295] (II) Module ABI versions:
[  1233.295] 	X.Org ANSI C Emulation: 0.4
[  1233.295] 	X.Org Video Driver: 20.0
[  1233.295] 	X.Org XInput driver : 22.1
[  1233.295] 	X.Org Server Extension : 9.0
[  1233.301] (++) using VT number 1

[  1233.301] (--) controlling tty is VT number 1, auto-enabling KeepTty
[  1233.315] (II) systemd-logind: took control of session /org/freedesktop/login1/session/c1
[  1233.319] (--) PCI:*(0:0:2:0) 126f:0712:1014:01a4 rev 160, Mem @ 0x0e000000/16777216, BIOS @ 0x????????/131072
[  1233.319] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[  1233.319] (II) "glx" will be loaded. This was enabled by default and also specified in the config file.
[  1233.319] (II) LoadModule: "glx"
[  1233.321] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[  1233.331] (II) Module glx: vendor="X.Org Foundation"
[  1233.331] 	compiled for 1.18.4, module version = 1.0.0
[  1233.332] 	ABI class: X.Org Server Extension, version 9.0
[  1233.332] (==) AIGLX enabled
[  1233.332] (II) LoadModule: "siliconmotion"
[  1233.332] (II) Loading /usr/lib/xorg/modules/drivers/siliconmotion_drv.so
[  1233.333] (II) Module siliconmotion: vendor="X.Org Foundation"
[  1233.333] 	compiled for 1.18.0, module version = 1.7.8
[  1233.334] 	Module class: X.Org Video Driver
[  1233.334] 	ABI class: X.Org Video Driver, version 20.0
[  1233.334] (II) SMI: driver (version 1.7.8) for Silicon Motion Lynx chipsets: Lynx,
	LynxE, Lynx3D, LynxEM, LynxEM+, Lynx3DM, Cougar3DR, MSOC
[  1233.335] (WW) Falling back to old probe method for siliconmotion
[  1233.335] (--) Chipset LynxEM+ found
[  1233.335] (II) Loading sub module "vgahw"
[  1233.335] (II) LoadModule: "vgahw"
[  1233.336] (II) Loading /usr/lib/xorg/modules/libvgahw.so
[  1233.337] (II) Module vgahw: vendor="X.Org Foundation"
[  1233.337] 	compiled for 1.18.4, module version = 0.1.0
[  1233.337] 	ABI class: X.Org Video Driver, version 20.0
[  1233.337] (**) SMI(0): Depth 8, (--) framebuffer bpp 8
[  1233.338] (==) SMI(0): Default visual is PseudoColor
[  1233.338] (**) SMI(0): Option "UseBIOS" "off"
[  1233.338] (**) SMI(0): Option "AccelMethod" "EXA"
[  1233.338] (==) SMI(0): PCI Burst enabled
[  1233.338] (==) SMI(0): PCI Retry enabled
[  1233.338] (==) SMI(0): Using Hardware Cursor
[  1233.338] (**) SMI(0): Option: UseBIOS disabled.
[  1233.338] (--) SMI(0): Chipset: "LynxEM+"
[  1233.338] (==) SMI(0): Dual head disabled
[  1233.338] (**) SMI(0): Using EXA acceleration architecture
[  1233.339] (--) SMI(0): videoram: 0kB
[  1233.339] (II) SMI(0): TFT Panel Size = 800x600
[  1233.339] (II) Loading sub module "i2c"
[  1233.339] (II) LoadModule: "i2c"
[  1233.340] (II) Module "i2c" already built-in
[  1233.340] (II) SMI(0): I2C bus "I2C bus" initialized.
[  1233.340] (II) Loading sub module "ddc"
[  1233.340] (II) LoadModule: "ddc"
[  1233.340] (II) Module "ddc" already built-in
[  1233.340] (==) SMI(0): Using gamma correction (1.0, 1.0, 1.0)
[  1233.340] (II) SMI(0): MCLK = 157.000
[  1233.340] (II) SMI(0): Output LVDS using monitor section Monitor0
[  1233.341] (II) SMI(0): Printing probed modes for output LVDS
[  1233.341] (II) SMI(0): Modeline "800x600"x59.9   38.25  800 832 912 1024  600 603 607 624 -hsync +vsync (37.4 kHz)
[  1233.341] (II) SMI(0): Output LVDS connected
[  1233.341] (II) SMI(0): Using exact sizes for initial modes
[  1233.341] (II) SMI(0): Output LVDS using initial mode 800x600 +0+0
[  1233.341] (II) SMI(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
[  1233.341] (EE) SMI(0): Not enough video memory for the configured screen size (800x600) and color depth.
[  1233.341] (II) UnloadModule: "siliconmotion"
[  1233.341] (II) UnloadSubModule: "vgahw"
[  1233.341] (II) Unloading vgahw
[  1233.342] (EE) Screen(s) found, but none have a usable configuration.
[  1233.342] (EE) 
Fatal server error:
[  1233.342] (EE) no screens found(EE) 
[  1233.342] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[  1233.342] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[  1233.342] (EE) 
[  1233.425] (EE) Server terminated with error (1). Closing log file.

the "not enough video memory" error has been encountered fairly often and has some solutions, however a key difference in my case is the line "videoram: 0kB". does anybody know why this could be happening? lspci correctly detects the card as having 16Mbit of video RAM, but siliconmotion does not. I have got X to launch by using the fbdev driver (vesa was a black screen), but of course it is very slow and not even close to ideal.

here's my xorg.conf

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "/usr/share/fonts/misc/"
	FontPath     "/usr/share/fonts/TTF/"
	FontPath     "/usr/share/fonts/OTF/"
	FontPath     "/usr/share/fonts/Type1/"
	FontPath     "/usr/share/fonts/100dpi/"
	FontPath     "/usr/share/fonts/75dpi/"
EndSection

Section "Module"
	Load  "glx"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection

Section "Device"
	Identifier  "Card0"
	Driver      "siliconmotion"
	BusID       "PCI:0:2:0"
	VendorName  "All"
	BoardName   "All"
        Option      "AccelMethod"        	"EXA"
	Option      "UseBIOS"                   "off"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	DefaultDepth   16
	Monitor    "Monitor0"
	SubSection "Display"
		Virtual   800 600
	EndSubSection
EndSection

any help or insight would greatly be appreciated!

Offline

#2 2016-08-05 12:46:10

Lone_Wolf
Administrator
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 15,156

Re: video driver reports 0kB VRAM, fails to launch X

parashep,

there's 1 big difference between hutou's config from that thread and yours .

	Option      "UseBIOS"                   "off"

You specifically disable the videocard VBE Bios, while it's active for hutou's card.
Try removing or commenting out the UseBIOS option .

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

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#3 2016-08-05 14:08:23

parashep
Member
Registered: 2014-04-20
Posts: 12

Re: video driver reports 0kB VRAM, fails to launch X

good point! I had that option set because I read in a few places that it could cause black screen issues. removing it nets me this message after the vbe module loads:

(II) SMI(0): VESA BIOS not detected
(WW) SMI(0): VBE initialization failed: falling back to UseBIOS disabled.

I'm not so familiar with X, am I missing a BIOS package or is it simply a probing issue, considering this line from the log?

PCI:*(0:0:2:0) 126f:0712:1014:01a4 rev 160, Mem @ 0x0e000000/16777216, BIOS @ 0x????????/131072

in any case, the rest of the log is the same, including the videoram line.

EDIT:
I have also read that the driver in some cases incorrectly determines the memory clock? I have tried the value in this topic, as well as trying a few other values. according to the databook for the controller, it can be clocked up to 129MHz, making the probed value also incorrect? still no results, however.

The LynxEM+ supports a 2 or 4 Mbytes of memory. There are three memory configurations:
1. 2 Mbytes internal memory only
2. 4 Mbytes of internal memory (there is no option for external memory with this configuration)
The internal memory is 2 or 4 Mbytes of 512Kx32 SGRAM. The LynxEM+ single cycle interface may be clocked up to 129 MHz, which provides over 516 MB/s. The LynxEM4+ single cycle interface may be clocked up to 86 MHz, which provides over 688 MB/s.

Last edited by parashep (2016-08-05 14:21:12)

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#4 2016-08-07 13:57:01

Lone_Wolf
Administrator
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 15,156

Re: video driver reports 0kB VRAM, fails to launch X

you're not missing a bios package,but it is possible the bios of your system blocks access to the videocard own bios .
Are there options in your bios that mention expansion roms ?

Keep in mind that the other thread was about a lynx EM chipset,while you have an lynx EM+ chipset .

One thing is clear from xorg.log though,your xorg.conf is not applied completely  .

[  1233.337] (**) SMI(0): Depth 8, (--) framebuffer bpp 8
[  1233.338] (==) SMI(0): Default visual is PseudoColor
Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	DefaultDepth   16
	Monitor    "Monitor0"
	SubSection "Display"
		Virtual   800 600
	EndSubSection
EndSection

Could you try with the same minimal xorg.conf as shown here ?

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Offline

#5 2016-08-07 15:17:51

parashep
Member
Registered: 2014-04-20
Posts: 12

Re: video driver reports 0kB VRAM, fails to launch X

thanks for the help again, Lone_Wolf.
I looked in the BIOS options and the there is no option for expansion roms that I could find, the only potentially relevant setting I could find is called "screen expansion". however, it didn't improve anything, it only made the screen area smaller and cut off the bottom when I tried launching X.

here's my log for the minimal xorg.conf you suggested:

[   478.610] 
X.Org X Server 1.18.4
Release Date: 2016-07-19
[   478.612] X Protocol Version 11, Revision 0
[   478.613] Build Operating System: Linux 4.5.4-1-ARCH i686 
[   478.616] Current Operating System: Linux relic 4.6.4-1-ARCH #1 SMP PREEMPT Mon Jul 11 19:30:13 CEST 2016 i686
[   478.617] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=63a595e4-a54f-454c-a2cd-c209ce53ff32 rw quiet
[   478.620] Build Date: 19 July 2016  05:56:07PM
[   478.620]  
[   478.621] Current version of pixman: 0.34.0
[   478.623] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[   478.624] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[   478.631] (==) Log file: "/var/log/Xorg.0.log", Time: Sun Aug  7 10:59:14 2016
[   478.633] (==) Using config file: "/etc/X11/xorg.conf"
[   478.634] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[   478.635] (==) No Layout section.  Using the first Screen section.
[   478.635] (**) |-->Screen "Screen0" (0)
[   478.635] (**) |   |-->Monitor "<default monitor>"
[   478.636] (==) No monitor specified for screen "Screen0".
	Using a default monitor configuration.
[   478.636] (==) Automatically adding devices
[   478.637] (==) Automatically enabling devices
[   478.637] (==) Automatically adding GPU devices
[   478.637] (==) Max clients allowed: 256, resource mask: 0x1fffff
[   478.637] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[   478.637] 	Entry deleted from font path.
[   478.637] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
[   478.637] 	Entry deleted from font path.
[   478.637] 	(Run 'mkfontdir' on "/usr/share/fonts/100dpi/").
[   478.637] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
[   478.637] 	Entry deleted from font path.
[   478.637] 	(Run 'mkfontdir' on "/usr/share/fonts/75dpi/").
[   478.637] (==) FontPath set to:
	/usr/share/fonts/misc/,
	/usr/share/fonts/TTF/,
	/usr/share/fonts/OTF/
[   478.637] (==) ModulePath set to "/usr/lib/xorg/modules"
[   478.637] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[   478.638] (II) Loader magic: 0x82a96c0
[   478.638] (II) Module ABI versions:
[   478.638] 	X.Org ANSI C Emulation: 0.4
[   478.638] 	X.Org Video Driver: 20.0
[   478.638] 	X.Org XInput driver : 22.1
[   478.638] 	X.Org Server Extension : 9.0
[   478.644] (++) using VT number 1

[   478.644] (--) controlling tty is VT number 1, auto-enabling KeepTty
[   478.658] (II) systemd-logind: took control of session /org/freedesktop/login1/session/c1
[   478.662] (--) PCI:*(0:0:2:0) 126f:0712:1014:01a4 rev 160, Mem @ 0x0e000000/16777216, BIOS @ 0x????????/131072
[   478.666] (II) Open ACPI successful (/var/run/acpid.socket)
[   478.666] (II) LoadModule: "glx"
[   478.668] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[   478.678] (II) Module glx: vendor="X.Org Foundation"
[   478.678] 	compiled for 1.18.4, module version = 1.0.0
[   478.678] 	ABI class: X.Org Server Extension, version 9.0
[   478.678] (==) AIGLX enabled
[   478.679] (==) Matched siliconmotion as autoconfigured driver 0
[   478.679] (==) Matched modesetting as autoconfigured driver 1
[   478.679] (==) Matched fbdev as autoconfigured driver 2
[   478.679] (==) Matched vesa as autoconfigured driver 3
[   478.679] (==) Assigned the driver to the xf86ConfigLayout
[   478.679] (II) LoadModule: "siliconmotion"
[   478.680] (II) Loading /usr/lib/xorg/modules/drivers/siliconmotion_drv.so
[   478.680] (II) Module siliconmotion: vendor="X.Org Foundation"
[   478.681] 	compiled for 1.18.0, module version = 1.7.8
[   478.681] 	Module class: X.Org Video Driver
[   478.681] 	ABI class: X.Org Video Driver, version 20.0
[   478.681] (II) LoadModule: "modesetting"
[   478.681] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[   478.682] (II) Module modesetting: vendor="X.Org Foundation"
[   478.682] 	compiled for 1.18.4, module version = 1.18.4
[   478.682] 	Module class: X.Org Video Driver
[   478.682] 	ABI class: X.Org Video Driver, version 20.0
[   478.682] (II) LoadModule: "fbdev"
[   478.683] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[   478.684] (II) Module fbdev: vendor="X.Org Foundation"
[   478.684] 	compiled for 1.18.0, module version = 0.4.4
[   478.684] 	Module class: X.Org Video Driver
[   478.684] 	ABI class: X.Org Video Driver, version 20.0
[   478.684] (II) LoadModule: "vesa"
[   478.685] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[   478.685] (II) Module vesa: vendor="X.Org Foundation"
[   478.686] 	compiled for 1.18.0, module version = 2.3.4
[   478.686] 	Module class: X.Org Video Driver
[   478.686] 	ABI class: X.Org Video Driver, version 20.0
[   478.686] (II) SMI: driver (version 1.7.8) for Silicon Motion Lynx chipsets: Lynx,
	LynxE, Lynx3D, LynxEM, LynxEM+, Lynx3DM, Cougar3DR, MSOC
[   478.686] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[   478.686] (II) FBDEV: driver for framebuffer: fbdev
[   478.687] (II) VESA: driver for VESA chipsets: vesa
[   478.687] (WW) Falling back to old probe method for siliconmotion
[   478.687] (--) Assigning device section with no busID to primary device
[   478.687] (--) Chipset LynxEM+ found
[   478.687] (WW) Falling back to old probe method for modesetting
[   478.688] (EE) open /dev/dri/card0: No such file or directory
[   478.688] (WW) Falling back to old probe method for fbdev
[   478.688] (II) Loading sub module "fbdevhw"
[   478.688] (II) LoadModule: "fbdevhw"
[   478.689] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[   478.689] (II) Module fbdevhw: vendor="X.Org Foundation"
[   478.690] 	compiled for 1.18.4, module version = 0.0.2
[   478.690] 	ABI class: X.Org Video Driver, version 20.0
[   478.690] (WW) Falling back to old probe method for vesa
[   478.691] (II) Loading sub module "vgahw"
[   478.691] (II) LoadModule: "vgahw"
[   478.691] (II) Loading /usr/lib/xorg/modules/libvgahw.so
[   478.692] (II) Module vgahw: vendor="X.Org Foundation"
[   478.692] 	compiled for 1.18.4, module version = 0.1.0
[   478.692] 	ABI class: X.Org Video Driver, version 20.0
[   478.693] (**) SMI(0): Depth 16, (--) framebuffer bpp 16
[   478.693] (==) SMI(0): RGB weight 565
[   478.693] (==) SMI(0): Default visual is TrueColor
[   478.693] (==) SMI(0): PCI Burst enabled
[   478.693] (==) SMI(0): PCI Retry enabled
[   478.693] (==) SMI(0): Using Hardware Cursor
[   478.693] (II) Loading sub module "int10"
[   478.694] (II) LoadModule: "int10"
[   478.694] (II) Loading /usr/lib/xorg/modules/libint10.so
[   478.695] (II) Module int10: vendor="X.Org Foundation"
[   478.695] 	compiled for 1.18.4, module version = 1.0.0
[   478.695] 	ABI class: X.Org Video Driver, version 20.0
[   478.698] (II) SMI(0): Primary V_BIOS segment is: 0xc000
[   478.698] (II) Loading sub module "vbe"
[   478.698] (II) LoadModule: "vbe"
[   478.699] (II) Loading /usr/lib/xorg/modules/libvbe.so
[   478.699] (II) Module vbe: vendor="X.Org Foundation"
[   478.700] 	compiled for 1.18.4, module version = 1.1.0
[   478.700] 	ABI class: X.Org Video Driver, version 20.0
[   479.360] (II) SMI(0): VESA BIOS not detected
[   479.360] (WW) SMI(0): VBE initialization failed: falling back to UseBIOS disabled.
[   479.361] (--) SMI(0): Chipset: "LynxEM+"
[   479.361] (==) SMI(0): Dual head disabled
[   479.361] (==) SMI(0): Using XAA acceleration architecture
[   479.361] (--) SMI(0): videoram: 0kB
[   479.361] (II) SMI(0): TFT Panel Size = 800x600
[   479.362] (II) Loading sub module "i2c"
[   479.362] (II) LoadModule: "i2c"
[   479.362] (II) Module "i2c" already built-in
[   479.362] (II) SMI(0): I2C bus "I2C bus" initialized.
[   479.362] (II) Loading sub module "ddc"
[   479.362] (II) LoadModule: "ddc"
[   479.362] (II) Module "ddc" already built-in
[   479.362] (==) SMI(0): Using gamma correction (1.0, 1.0, 1.0)
[   479.362] (II) SMI(0): MCLK = 157.000
[   479.362] (II) SMI(0): Output LVDS has no monitor section
[   479.362] (II) SMI(0): Printing probed modes for output LVDS
[   479.363] (II) SMI(0): Modeline "800x600"x59.9   38.25  800 832 912 1024  600 603 607 624 -hsync +vsync (37.4 kHz)
[   479.363] (II) SMI(0): Output LVDS connected
[   479.363] (II) SMI(0): Using exact sizes for initial modes
[   479.363] (II) SMI(0): Output LVDS using initial mode 800x600 +0+0
[   479.363] (II) SMI(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
[   479.363] (EE) SMI(0): Not enough video memory for the configured screen size (800x600) and color depth.
[   479.363] (II) UnloadModule: "siliconmotion"
[   479.364] (II) UnloadSubModule: "vbe"
[   479.364] (II) Unloading vbe
[   479.364] (II) UnloadSubModule: "int10"
[   479.364] (II) Unloading int10
[   479.364] (II) UnloadSubModule: "vgahw"
[   479.364] (II) Unloading vgahw
[   479.364] (EE) Screen(s) found, but none have a usable configuration.
[   479.364] (EE) 
Fatal server error:
[   479.364] (EE) no screens found(EE) 
[   479.365] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[   479.365] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   479.365] (EE) 
[   479.448] (EE) Server terminated with error (1). Closing log file.

the discrepancy you noticed between my xorg.conf and log is my mistake; I suppose I changed my configuration back to a depth of 16 after I had tried it at 8 but didn't try starting X again after that, there is is no problem there.

thanks again!

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