how to set resolution to 1440x900

alick · 05-30-2010, 08:49 AM

Hi,
I run RHEL5 on Dell GX280 with
"Intel Corporation 82915G/GV/910GL Integrated Graphics Controller (rev 04)"
and i810 driver.
But I cannot obtain 1440x900 resolution. Here's my xorg.conf:

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "Monitor"

### Comment all HorizSync and VertSync values to use DDC:
#DisplaySize 408 255
Identifier "Monitor0"
ModelName "LCD Panel 1440x900"
HorizSync 24.0 - 83.0
VertRefresh 50.0 - 76.0
ModeLine "1440x900" 106.5 1440 1520 1672 1904 900 903 909 934 -Hsync +Vsync
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "i810"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1440x900"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1440x900"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
Modes "1440x900"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
EndSection

Thanks

pixellany · 05-30-2010, 09:03 AM

Quote:

ModeLine "1440x900" 106.5 1440 1520 1672 1904 900 903 909 934 -Hsync +Vsync

I can't duplicate this. Try one of these:

Code:

[mherring@Ath ~]$ gtf 1440 900 60

  # 1440x900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 106.47 MHz
  Modeline "1440x900_60.00"  106.47  1440 1520 1672 1904  900 901 904 932  -HSync +Vsync

[mherring@Ath ~]$ gtf 1440 900 59

  # 1440x900 @ 59.00 Hz (GTF) hsync: 54.93 kHz; pclk: 104.58 MHz
  Modeline "1440x900_59.00"  104.58  1440 1520 1672 1904  900 901 904 931  -HSync +Vsync

Also, I once discovered that I had to constrain the vert refresh when using a modeline, e.g.: (for a 60Hz modeline)
VertRefresh 59.9 - 60.1

AND--What happens if you remove the modeline and the all the modes? What options are you given?

alick · 05-30-2010, 09:37 AM

Unfortunately, nothing changed. After removing the modeline and the all the modes, I get the same resolution options as before:
1280x1024
1024x768
800x600
640x480

Thanks

lazlow · 05-30-2010, 10:34 AM

alick

There are two places (assuming gnome) that you can change the screen resolution. Usually people just find the System->Preference->Screen Resolution and stop, but if System->Administration->Display is not set up properly the first one will not show the other resolutions. This may or may not be the issue you are facing.

alick · 05-30-2010, 10:45 AM

Both
System->Administration->Display
and
System->Preference->Screen Resolution
show the same options.
And this is what X-Windows log shows:

(II) I810(0): Supported VESA Video Modes:
(II) I810(0): 720x400@70Hz
(II) I810(0): 640x480@60Hz
(II) I810(0): 800x600@60Hz
(II) I810(0): 1024x768@60Hz
(II) I810(0): Manufacturer's mask: 0
(II) I810(0): Supported Future Video Modes:
(II) I810(0): #0: hsize: 1280 vsize 960 refresh: 60 vid: 16513
(II) I810(0): #1: hsize: 1280 vsize 1024 refresh: 60 vid: 32897
(II) I810(0): Supported additional Video Mode:
(II) I810(0): clock: 106.5 MHz Image Size: 408 x 255 mm
(II) I810(0): h_active: 1440 h_sync: 1520 h_sync_end 1672 h_blank_end 1904 h_border: 0
(II) I810(0): v_active: 900 v_sync: 903 v_sync_end 909 v_blanking: 934 v_border: 0
(II) I810(0): Ranges: V min: 50 V max: 76 Hz, H min: 24 H max: 83 kHz, PixClock max 140 MHz
(II) I810(0): Monitor name: LA1905
(II) I810(0): EDID (in hex):
(II) I810(0): 00ffffffffffff0022f0442801010101
(II) I810(0): 2b13010368291a78ee37c5a4554c9b25
(II) I810(0): 125054a1080081408180010101010101
(II) I810(0): 0101010101019a29a0d0518422305098
(II) I810(0): 360098ff1000001c000000fd00324c18
(II) I810(0): 530e000a202020202020000000fc004c
(II) I810(0): 41313930350a202020202020000000ff
(II) I810(0): 00434e43393433314437300a2020004f
(II) I810(0): Using hsync ranges from config file
(II) I810(0): Using vrefresh ranges from config file
(II) I810(0): Printing DDC gathered Modelines:
(II) I810(0): Modeline "800x600" 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync
(II) I810(0): Modeline "640x480" 25.20 640 656 752 800 480 490 492 525 -hsync -vsync
(II) I810(0): Modeline "720x400" 28.32 720 738 846 900 400 412 414 449 -hsync +vsync
(II) I810(0): Modeline "1024x768" 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
(II) I810(0): Modeline "1280x960" 101.25 1280 1360 1488 1696 960 963 967 996 -hsync +vsync
(II) I810(0): Modeline "1280x1024" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
(II) I810(0): Modeline "1440x900" 106.50 1440 1520 1672 1904 900 903 909 934 +hsync -vsync
(II) I810(0): Will use BIOS call 0x5f05 to set refresh rates for CRTs.
(--) I810(0): Maximum space available for video modes: 12288 kByte
(II) I810(0): Using detected DDC timings
(II) I810(0): HorizSync 24-83
(II) I810(0): VertRefresh 50-76

pixellany · 05-30-2010, 11:02 AM

You didn't say if you tried my other suggestions.

alick · 05-30-2010, 11:05 AM

Yes, I did try them. No change.

ferrari · 06-06-2010, 12:36 AM

Quote:

I run RHEL5 on Dell GX280 with
"Intel Corporation 82915G/GV/910GL Integrated Graphics Controller (rev 04)"
and i810 driver.
But I cannot obtain 1440x900 resolution.

I notice you're using the i810 driver. This may require the use of 915resolution utility first to make this resolution available:

http://www.linuxquestions.org/linux/...Graphics_Cards

http://knowledge76.com/index.php/Res...th_Intel_945GM

alick · 06-07-2010, 07:43 AM

Thank you very much indeed.
Finally, I can work with my Linux.

ferrari · 06-08-2010, 07:51 PM

My pleasure. Glad you've got it sorted.