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fbdev driver on Wheezy
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Andrew Wood
Mar 15, 2015, 2:00:05 PM3/15/15
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Im trying to get Wheezy with lightdm and Xfce to work on an old kiosk
machine with a Silicon Motion SM712 chip. Currently X just turns the
screen off as soon as it starts and from the Googling Ive done it seems
this is a common problem with both the silicon motion driver and the
generic vesa driver and the solution appears to be using the fbdev
driver instead?
How can I force X to use this driver under Wheezy, there doesnt even
seem to be an xorg.conf file anywhere?
Thanks
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machine with a Silicon Motion SM712 chip. Currently X just turns the
screen off as soon as it starts and from the Googling Ive done it seems
this is a common problem with both the silicon motion driver and the
generic vesa driver and the solution appears to be using the fbdev
driver instead?
How can I force X to use this driver under Wheezy, there doesnt even
seem to be an xorg.conf file anywhere?
Thanks
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Sven Joachim
Mar 15, 2015, 4:10:06 PM3/15/15
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On 2015-03-15 18:44 +0100, Andrew Wood wrote:
> Im trying to get Wheezy with lightdm and Xfce to work on an old kiosk
> machine with a Silicon Motion SM712 chip. Currently X just turns the
> screen off as soon as it starts and from the Googling Ive done it
> seems this is a common problem with both the silicon motion driver and
> the generic vesa driver and the solution appears to be using the fbdev
> driver instead?
>
> How can I force X to use this driver under Wheezy, there doesnt even
> seem to be an xorg.conf file anywhere?
You can create your own, the following four lines are sufficient:
> Im trying to get Wheezy with lightdm and Xfce to work on an old kiosk
> machine with a Silicon Motion SM712 chip. Currently X just turns the
> screen off as soon as it starts and from the Googling Ive done it
> seems this is a common problem with both the silicon motion driver and
> the generic vesa driver and the solution appears to be using the fbdev
> driver instead?
>
> How can I force X to use this driver under Wheezy, there doesnt even
> seem to be an xorg.conf file anywhere?
--8<---------------cut here---------------start------------->8---
Section "Device"
Identifier "n"
Driver "fbdev"
EndSection
--8<---------------cut here---------------end--------------->8---
Save this as /etc/X11/xorg.conf, and X will use the fbdev driver.
Good luck,
Sven
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Andrew Wood
Mar 15, 2015, 7:30:04 PM3/15/15
to
On 15/03/15 20:07, Sven Joachim wrote:
> On 2015-03-15 18:44 +0100, Andrew Wood wrote:
>
>> Im trying to get Wheezy with lightdm and Xfce to work on an old kiosk
>> machine with a Silicon Motion SM712 chip. Currently X just turns the
>> screen off as soon as it starts and from the Googling Ive done it
>> seems this is a common problem with both the silicon motion driver and
>> the generic vesa driver and the solution appears to be using the fbdev
>> driver instead?
>>
>> How can I force X to use this driver under Wheezy, there doesnt even
>> seem to be an xorg.conf file anywhere?
> You can create your own, the following four lines are sufficient:
>
> --8<---------------cut here---------------start------------->8---
> Section "Device"
> Identifier "n"
> Driver "fbdev"
> EndSection
> --8<---------------cut here---------------end--------------->8---
>
> Save this as /etc/X11/xorg.conf, and X will use the fbdev driver.
Thanks Sven
> On 2015-03-15 18:44 +0100, Andrew Wood wrote:
>
>> Im trying to get Wheezy with lightdm and Xfce to work on an old kiosk
>> machine with a Silicon Motion SM712 chip. Currently X just turns the
>> screen off as soon as it starts and from the Googling Ive done it
>> seems this is a common problem with both the silicon motion driver and
>> the generic vesa driver and the solution appears to be using the fbdev
>> driver instead?
>>
>> How can I force X to use this driver under Wheezy, there doesnt even
>> seem to be an xorg.conf file anywhere?
> You can create your own, the following four lines are sufficient:
>
> --8<---------------cut here---------------start------------->8---
> Section "Device"
> Identifier "n"
> Driver "fbdev"
> EndSection
> --8<---------------cut here---------------end--------------->8---
>
> Save this as /etc/X11/xorg.conf, and X will use the fbdev driver.
Ive done some experimenting using a skeleton xorg.conf file created
using Xorg -configure and then editing it.
Below is the complete file. The machine has two monitor ports one LVDS
to which the kiosks LCD is normally connected which is 800x600 and a VGA
port to which I have a temporary 15" CRT connected via a KVM switch.
Ive thus created two Device entries with a separate screen number for
each. With the driver set to 'siliconmotion' running X with Xorg -config
/root/xorg.conf.new it flashes an X GUI output for a split second - Im
sure I see the Wheezy grey background and Debian logo then the screen
turns off.
Setting the driver to 'fbdev' X refuses to start with a seg fault.
Ive learnt a lot about X configuration tonight having not done it
before. I feel Im almost there but not quite. Can anyone enlighten me as
to what is wrong please?
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection
Section "Module"
Load "dbe"
Load "dri2"
Load "glx"
Load "extmod"
Load "dri"
Load "record"
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 "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "Rotate" # <str>
#Option "fbdev" # <str>
#Option "debug" # [<bool>]
Identifier "Card0"
Driver "fbdev"
BusID "PCI:1:0:0"
Screen 0
EndSection
Section "Device"
Identifier "Card1"
Driver "fbdev"
BusID "PCI:1:0:0"
Screen 1
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "800x600"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "800x600"
EndSubSection
EndSection
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David Wright
Mar 15, 2015, 8:20:06 PM3/15/15
to
Quoting Andrew Wood (and...@perpetualmotion.co.uk):
> Section "Device"
> ### Available Driver options are:-
> ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
> ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
> ### <percent>: "<f>%"
> ### [arg]: arg optional
> #Option "ShadowFB" # [<bool>]
> #Option "Rotate" # <str>
> #Option "fbdev" # <str>
> #Option "debug" # [<bool>]
> Identifier "Card0"
> Driver "fbdev"
> BusID "PCI:1:0:0"
> Screen 0
> EndSection
>
> Section "Device"
> Identifier "Card1"
> Driver "fbdev"
> BusID "PCI:1:0:0"
> Screen 1
> EndSection
You've got two cards on one PCI address. lspci might tell you what the
> Section "Device"
> ### Available Driver options are:-
> ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
> ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
> ### <percent>: "<f>%"
> ### [arg]: arg optional
> #Option "ShadowFB" # [<bool>]
> #Option "Rotate" # <str>
> #Option "fbdev" # <str>
> #Option "debug" # [<bool>]
> Identifier "Card0"
> Driver "fbdev"
> BusID "PCI:1:0:0"
> Screen 0
> EndSection
>
> Section "Device"
> Identifier "Card1"
> Driver "fbdev"
> BusID "PCI:1:0:0"
> Screen 1
> EndSection
correct values are.
Cheers,
David.
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Andrew Wood
Mar 17, 2015, 8:20:05 AM3/17/15
to
On 16/03/15 00:09, David Wright wrote:
>
> You've got two cards on one PCI address. lspci might tell you what the
> correct values are.
>
> Cheers,
> David.
>
>
01:00.0 VGA compatible controller Silicon Motion SM712
I suspect what may be happening is its defaulting to video out on the
LVDS and turning the VGA port off. Is there a way to configure it to
mirror the output on both ports simultaneously?
Thanks
Andrew
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Elimar Riesebieter
Mar 17, 2015, 10:00:04 AM3/17/15
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* Andrew Wood <and...@perpetualmotion.co.uk> [2015-03-17 12:18 +0000]:
[...]
Elimar
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Alles was viel bedacht wird ist bedenklich!;-)
Friedrich Nietzsche
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[...]
> It just lists one
>
> 01:00.0 VGA compatible controller Silicon Motion SM712
>
> I suspect what may be happening is its defaulting to video out on the LVDS
> and turning the VGA port off. Is there a way to configure it to mirror the
> output on both ports simultaneously?
Maybe https://wiki.debian.org/XStrikeForce/HowToRandR12
>
> 01:00.0 VGA compatible controller Silicon Motion SM712
>
> I suspect what may be happening is its defaulting to video out on the LVDS
> and turning the VGA port off. Is there a way to configure it to mirror the
> output on both ports simultaneously?
Elimar
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Alles was viel bedacht wird ist bedenklich!;-)
Friedrich Nietzsche
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Andrew Wood
Mar 17, 2015, 5:10:08 PM3/17/15
to
On 17/03/15 13:50, Elimar Riesebieter wrote:
> * Andrew Wood <and...@perpetualmotion.co.uk> [2015-03-17 12:18 +0000]:
>
> [...]
>> It just lists one
>>
>> 01:00.0 VGA compatible controller Silicon Motion SM712
>>
>> I suspect what may be happening is its defaulting to video out on the LVDS
>> and turning the VGA port off. Is there a way to configure it to mirror the
>> output on both ports simultaneously?
> Maybe https://wiki.debian.org/XStrikeForce/HowToRandR12
>
> Elimar
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