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Old 08-12-2014, 07:25 AM   #1
umtkyck
LQ Newbie
 
Registered: Aug 2014
Posts: 2

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LCD Screen Resolution


Hi,

I have intel atom board and when I boot it from flash or USB Screen resolution comes with 1024x768 but I choosed LVDS on BIOS with 800x600 18bit.On the other hand ,I have a different board of inte atom when configure like above it gives me correct screen resolution.

When I added kernel parameter video=800x600@60 to syslinux --> outputs are like below:

$fbset
mode "800x600-0"
# D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
geometry 800 600 800 600 32
timings 0 0 0 0 0 0 0
accel true
rgba 8/16,8/8,8/0,0/0
endmode

$xrandr
LVDS1 connected 800x600+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0 +
800x600 60.3 60.0* 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

$cat /proc/fb
0 inteldrmfb
1 VESA VGA

Kernel Command line = video=800x600@60
Linux= Yocto Sato , also Ubuntu is tried

Something on backside it doesnt change because LCD is 800x600 but characters doesnt fit to screen , screen is always 1024x768 I think. How can I fix the screen resolution and frame buffer resolution and LCD to 800x600?

Thanks.

Last edited by umtkyck; 08-12-2014 at 07:27 AM.
 
Old 08-12-2014, 07:59 AM   #2
coralfang
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Registered: Nov 2010
Location: Bristol, UK
Distribution: Slackware, FreeBSD
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Have you tried setting the vga value on the kernel boot line to one of these?; vga=771, vga=788, or vga=789
eg; http://www.pendrivelinux.com/vga-boo...en-resolution/
 
Old 08-12-2014, 08:12 AM   #3
umtkyck
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Registered: Aug 2014
Posts: 2

Original Poster
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Yeah I have already tried them but it didnt solve.
 
  


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