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Old 09-02-2011, 07:49 AM   #1
MichalKvacek
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Registered: Dec 2009
Location: Czech republic
Distribution: Arch Linux
Posts: 24

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Unhappy Cannot set native resolution (1920x1080) on Intel 82945G/GZ


Hi,
I've just bought new 22" monitor Philips 222EL (1920x1080), but I have problems with setting it's native resolution. Highest one is 1600x1200.
I've got integrated graphical controller - Intel 82945G/GZ (128MB memory thought), but X.server keeps complaining on "exceeded video memory" when I try to set virtual size to 1920x1080.
Here is the error message:
Code:
[  6411.133] (EE) VESA(0): Virtual size (1920x1080) (pitch 1920) exceeds video memory
[  6411.133] (EE) VESA(0): Virtual size (1920x1080) (pitch 1920) exceeds video memory
[  6411.133] (EE) VESA(0): Virtual size (1920x1080) (pitch 1920) exceeds video memory
[  6411.133] (EE) VESA(0): No valid modes
[  6411.133] (EE) Screen(s) found, but none have a usable configuration.
Here is my xorg.conf (after three hours of tweaking...)

Quote:
Section "Device"
Identifier "Configured Video Device"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Device"
Identifier "Card0"
Driver "intel"
BusId "PCI:0:2:0"
VideoRAM 131072
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Depth 24
# Virtual 1920 1080
Virtual 1600 1200
Modes "800x600 1600x1200 1920x1080"
EndSubSection
EndSection
I'm running Arch with 3.0.4 kernel.

And here is output from xrandr:
Quote:
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1600 x 1200, maximum 1600 x 1200
default connected 1600x1200+0+0 0mm x 0mm
1600x1200 0.0*
1280x1024 0.0
1024x768 0.0
800x600 0.0
640x480 0.0
I have also tried adding mode to xrandr, see the result:
Quote:
[michal@linuch: ~]$ cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
[michal@linuch: ~]$ xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr: Failed to get size of gamma for output default
[michal@linuch: ~]$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1600 x 1200, maximum 1600 x 1200
default connected 1600x1200+0+0 0mm x 0mm
1600x1200 0.0*
1280x1024 0.0
1024x768 0.0
800x600 0.0
640x480 0.0
1920x1080_60.00 (0x13d) 173.0MHz
h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.2KHz
v: height 1080 start 1083 end 1088 total 1120 clock 60.0Hz

[B][michal@linuch: ~]$ xrandr --addmode default 1920x1080_60.00
xrandr: Failed to get size of gamma for output default
[michal@linuch: ~]$ xrandr --output default --mode 1920x1080_60.00
xrandr: Failed to get size of gamma for output default
xrandr: screen cannot be larger than 1600x1200 (desired size 1920x1080)
I know, what does it mean, but don't know how to solve it. When I set virtual size to 1920x1080, I can't start X - as I wrote above.

I will appreciate any answer. Thank you.

Last edited by MichalKvacek; 09-02-2011 at 07:56 AM.
 
Old 09-02-2011, 08:21 AM   #2
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Just to be sure, did you check if the amount of memory available to the graphics chip is not limited through the BIOS?
 
Old 09-02-2011, 08:28 AM   #3
MichalKvacek
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Registered: Dec 2009
Location: Czech republic
Distribution: Arch Linux
Posts: 24

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Yes, I have checked it. There were three options, but I don't remember the values (one of them is 128MB and the second one is 225MB - thought.) I have chosen the biggest option available. That's why I don't understand why it doesn't work.. :/
 
Old 09-02-2011, 08:54 AM   #4
cascade9
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I'll see what else I can find, but heres the 2 possible problems-

Intel 945G/GZ Express Chipsets datasheet-

http://www.intel.com/Assets/PDF/datasheet/307502.pdf

See page 28, GMCH Graphics Support Includes-> 3D Graphics Rendering Enhancements-> Maximum 3D Reslution Suppotred 1600x1200 @ 85Hz.

I dont know if you are running in 3D or not. If not, you may be able to get a higher resolution, but then again, you may not-

Quote:
Although the chipset itself supports up to a specific maximum display mode or resolution, some computers support a lower maximum mode or resolution. You should check with your computer manufacturer for the maximum display mode or resolution supported by your computer.
http://www.intel.com/support/graphics/sb/CS-022544.htm
 
Old 09-02-2011, 03:11 PM   #5
MichalKvacek
LQ Newbie
 
Registered: Dec 2009
Location: Czech republic
Distribution: Arch Linux
Posts: 24

Original Poster
Rep: Reputation: 1
Thank you for reply. However, it's solved now. The problem was elsewhere - on archlinux wiki. Adding "i915" to MODULES in /etc/mkinitcpio.conf solved everything. I hope that one day I finally find out, what the abbreviation "RTFM" means...

But thank you for the ideas. I really appreciate it.

Greets, Michal Kváček.
 
  


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