Monitor problems

[picabodaddy]

This seems to be a common question in the forms, but I can't find an answer to my specific issue, and on my level of understanding.
First I'm ignorant of Linux on a whole. I'm learning as I go.
Problem:
I have installed (successfully) Ubuntu 10.04 ppc on my powerpc g4 mac. 400mhz, 1g ram. Its the blue model. It works great, but it does not detect my monitor, and I can not change the settings past 800 X 600. I am using a Dell 19 inch monitor. Analog input (not DVI yet) resolution 12080 x 1024 60hz.

I believe I need to change the info in the xconfig file (but I don't know to what or how), and I may not be saying thta correctly.

Please help, thanks.

[linuxopjemac]

provide me with the specs of your monitor (link) and a full desription of your G4 (give link in everymac.com).

[picabodaddy]

The mac is http://www.everymac.com/systems/appl...4_400_agp.html

The monitor is http://reviews.cnet.com/lcd-monitors...-31232074.html

[linuxopjemac]

ATI Rage 128 graphics card

Apple advertised that the Rage 128 can support "up to 1600 by 1200 pixel resolution at 32 bits per pixel (millions of colors) and up to 85-Hz refresh rate." The Rage 128 Pro can support up tp 1920 by 1200.

# Max Resolution 1280 x 1024 / 75 Hz
# Max Sync Rate (V x H) 75 Hz x 80 KHz

Resolution

Horizontal scan range 30 kHz to 81 kHz (automatic)
Vertical scan range 56 Hz to 76 Hz (automatic)
Optimal preset resolution 1280 x 1024 at 60 Hz
Highest preset resolution 1280 x 1024 at 75 Hz

Preset Display Modes
Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (Horizontal/Vertical)
VESA, 720 x 400 31.5 70.0 28.3 -/+
VESA, 640 x 480 31.5 60.0 25.2 -/-
VESA, 640 x 480 37.5 75.0 31.5 -/-
VESA, 800 x 600 37.9 60.3 49.5 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+
VESA, 1024 x 768 48.4 60.0 65.0 -/-
VESA, 1024 x 768 60.0 75.0 78.8 +/+
VESA, 1152 x 864 67.5 75.0 108 +/+
VESA, 1280 x 1024 64.0 60.0 135.0 +/+
VESA, 1280 x 1024 80.0 75.0 135.0 +/+

ok...five me the output of:

cvt 1280 1024 75
cvt 1280 1024 60
cvt 1152 864
cvt 1024 864 75
cvt 1024 864 60

[picabodaddy]

cvt 1280 1024 75

# 1280x1024 74.90 Hz (CVT 1.31M4) hsync: 80.30 kHz; pclk: 138.75 MHz
Modeline "1280x1024_75.00" 138.75 1280 1368 1504 1728 1024 1027 1034 1072 -hsync +vsync

cvt 1280 1024 60

# 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz
Modeline "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync

cvt 1152 864

# 1152x864 59.96 Hz (CVT 1.00M3) hsync: 53.78 kHz; pclk: 81.75 MHz
Modeline "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync

cvt 1024 864 75

# 1024x864 74.75 Hz (CVT) hsync: 67.65 kHz; pclk: 92.00 MHz
Modeline "1024x864_75.00" 92.00 1024 1088 1192 1360 864 867 877 905 -hsync +vsync

cvt 1024 864 60

# 1024x864 59.93 Hz (CVT) hsync: 53.76 kHz; pclk: 72.25 MHz
Modeline "1024x864_60.00" 72.25 1024 1080 1184 1344 864 867 877 897 -hsync +vsync

[linuxopjemac]

Try this xorg.conf:

Section "Device"
	Identifier	"ATI"
	Driver		"ati"
	BusID		"PCI:0:16:0"
Option "NoInt10" "true"
EndSection

Section "Monitor"
	Identifier	"Standardmonitor"
	Option		"DPMS"
	HorizSync	30-81 
	VertRefresh	56-76
# 1280x1024 74.90 Hz (CVT 1.31M4) hsync: 80.30 kHz; pclk: 138.75 MHz
Modeline "1280x1024_75.00" 138.75 1280 1368 1504 1728 1024 1027 1034 1072 -hsync +vsync
# 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz
Modeline "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
# 1152x864 59.96 Hz (CVT 1.00M3) hsync: 53.78 kHz; pclk: 81.75 MHz
Modeline "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync
# 1024x864 74.75 Hz (CVT) hsync: 67.65 kHz; pclk: 92.00 MHz
Modeline "1024x864_75.00" 92.00 1024 1088 1192 1360 864 867 877 905 -hsync +vsync
# 1024x864 59.93 Hz (CVT) hsync: 53.76 kHz; pclk: 72.25 MHz
Modeline "1024x864_60.00" 72.25 1024 1080 1184 1344 864 867 877 897 -hsync +vsync 
Option "PreferredMode" "1280x1024_75.00"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"ATI"
	Monitor		"Standardmonitor"
	DefaultDepth	24
	SubSection "Display"
		Depth		1
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
	SubSection "Display"
		Depth		4
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
	SubSection "Display"
		Depth		8
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
	SubSection "Display"
		Depth		15
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
	SubSection "Display"
		Depth		16
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
	SubSection "Display"
		Depth		24
		Modes		"1280x1024" "1152x864" "1024x864"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
EndSection

Section "DRI"
	Mode	0666
EndSection

[picabodaddy]

Just xorg.conf into the terminal, and paste?

Sorry I'm very new.

[linuxopjemac]

I made it easy for you:

wget http://mac.linux.be/files/xorg.conf
sudo mv xorg.conf /etc/X11/xorg.conf

Reboot and hopefully you have a working Ubuntu machine.

[picabodaddy]

Worked like a champ. Thank you very much. Just for info sake: what you did was change the file, had me download it and them move it to replace the old file, correct?

[linuxopjemac]

worked like a champ. Thank you very much. Just for info sake: What you did was change the file, had me download it and them move it to replace the old file, correct?

yep