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Old 05-07-2004, 09:50 AM   #1
dracflamloc
LQ Newbie
 
Registered: Feb 2004
Posts: 12

Rep: Reputation: 0
How to change refresh rate of monitor?


Here's my monitor section of xorg.conf:

# **********************************************************************
# Monitor section
# **********************************************************************

# Any number of monitor sections may be present

Section "Monitor"
Identifier "Monitor0"
HorizSync 31.5 - 60.0
VertRefresh 60 - 60
Option "DPMS"

# === mode lines based on GTF ===
# VGA @ 100Hz
# Modeline "640x480@100" 43.163 640 680 744 848 480 481 484 509 +hsync +vsync
# SVGA @ 100Hz
# Modeline "800x600@100" 68.179 800 848 936 1072 600 601 604 636 +hsync +vsync
# XVGA @ 100Hz
# Modeline "1024x768@100" 113.309 1024 1096 1208 1392 768 769 772 814 +hsync +vsync
# 1152x864 @ 60Hz
# Modeline "1152x864@60" 81.642 1152 1216 1336 1520 864 865 868 895 +hsync +vsync
# 1152x864 @ 85Hz
# Modeline "1152x864@85" 119.651 1152 1224 1352 1552 864 865 868 907 +hsync +vsync
# 1152x864 @ 100Hz
# Modeline "1152x864@100" 143.472 1152 1232 1360 1568 864 865 868 915 +hsync +vsync
# 1280x960 @ 75Hz
# Modeline "1280x960@75" 129.859 1280 1368 1504 1728 960 961 964 1002 +hsync +vsync
# 1280x960 @ 100Hz
# Modeline "1280x960@100" 178.992 1280 1376 1520 1760 960 961 964 1017 +hsync +vsync
# SXGA @ 100Hz
# Modeline "1280x1024@100" 190.960 1280 1376 1520 1760 1024 1025 1028 1085 +hsync +vsync
# SPEA GDM-1950 (60Hz,64kHz,110MHz,-,-): 1280x1024 @ V-freq: 60.00 Hz, H-freq: 63.73 KHz
# Modeline "GDM-1950" 109.62 1280 1336 1472 1720 1024 1024 1026 1062 -hsync -vsync
# 1600x1000 @ 60Hz
# Modeline "1600x1000" 133.142 1600 1704 1872 2144 1000 1001 1004 1035 +hsync +vsync
# 1600x1000 @ 75Hz
# Modeline "1600x1000" 169.128 1600 1704 1880 2160 1000 1001 1004 1044 +hsync +vsync
# 1600x1000 @ 85Hz
# Modeline "1600x1000" 194.202 1600 1712 1888 2176 1000 1001 1004 1050 +hsync +vsync
# 1600x1000 @ 100Hz
# Modeline "1600x1000" 232.133 1600 1720 1896 2192 1000 1001 1004 1059 +hsync +vsync
# 1600x1024 @ 60Hz
# Modeline "1600x1024" 136.385 1600 1704 1872 2144 1024 1027 1030 1060 +hsync +vsync
# 1600x1024 @ 75Hz
# Modeline "1600x1024" 174.416 1600 1712 1888 2176 1024 1025 1028 1069 +hsync +vsync
# 1600x1024 @ 76Hz
# Modeline "1600x1024" 170.450 1600 1632 1792 2096 1024 1027 1030 1070 +hsync +vsync
# 1600x1024 @ 85Hz
# Modeline "1600x1024" 198.832 1600 1712 1888 2176 1024 1027 1030 1075 +hsync +vsync
# 1920x1080 @ 60Hz
# Modeline "1920x1080" 172.798 1920 2040 2248 2576 1080 1081 1084 1118 -hsync -vsync
# 1920x1080 @ 75Hz
# Modeline "1920x1080" 211.436 1920 2056 2264 2608 1080 1081 1084 1126 +hsync +vsync
# 1920x1200 @ 60Hz
# Modeline "1920x1200" 193.156 1920 2048 2256 2592 1200 1201 1203 1242 +hsync +vsync
# 1920x1200 @ 75Hz
# Modeline "1920x1200" 246.590 1920 2064 2272 2624 1200 1201 1203 1253 +hsync +vsync
# 2048x1536 @ 60
# Modeline "2048x1536" 266.952 2048 2200 2424 2800 1536 1537 1540 1589 +hsync +vsync
# 2048x1536 @ 60
# Modeline "2048x1536" 266.952 2048 2200 2424 2800 1536 1537 1540 1589 +hsync +vsync
# 1400x1050 @ 60Hz M9 Laptop mode
# ModeLine "1400x1050" 122.000 1400 1488 1640 1880 1050 1052 1064 1082 +hsync +vsync
# 1920x2400 @ 25Hz for IBM T221, VS VP2290 and compatible display devices
# Modeline "1920x2400@25" 124.620 1920 1928 1980 2048 2400 2401 2403 2434 +hsync +vsync
# 1920x2400 @ 30Hz for IBM T221, VS VP2290 and compatible display devices
# Modeline "1920x2400@30" 149.250 1920 1928 1982 2044 2400 2402 2404 2434 +hsync +vsync

EndSection


Section "Monitor"
Identifier "Monitor1"
HorizSync 31.5 - 60.0
VertRefresh 60 - 60
Option "DPMS"

# === mode lines based on GTF ===
# VGA @ 100Hz
# Modeline "640x480@100" 43.163 640 680 744 848 480 481 484 509 +hsync +vsync
# SVGA @ 100Hz
# Modeline "800x600@100" 68.179 800 848 936 1072 600 601 604 636 +hsync +vsync
# XVGA @ 100Hz
# Modeline "1024x768@100" 113.309 1024 1096 1208 1392 768 769 772 814 +hsync +vsync
# 1152x864 @ 60Hz
# Modeline "1152x864@60" 81.642 1152 1216 1336 1520 864 865 868 895 +hsync +vsync
# 1152x864 @ 85Hz
# Modeline "1152x864@85" 119.651 1152 1224 1352 1552 864 865 868 907 +hsync +vsync
# 1152x864 @ 100Hz
# Modeline "1152x864@100" 143.472 1152 1232 1360 1568 864 865 868 915 +hsync +vsync
# 1280x960 @ 75Hz
# Modeline "1280x960@75" 129.859 1280 1368 1504 1728 960 961 964 1002 +hsync +vsync
# 1280x960 @ 100Hz
# Modeline "1280x960@100" 178.992 1280 1376 1520 1760 960 961 964 1017 +hsync +vsync
# SXGA @ 100Hz
# Modeline "1280x1024@100" 190.960 1280 1376 1520 1760 1024 1025 1028 1085 +hsync +vsync
# SPEA GDM-1950 (60Hz,64kHz,110MHz,-,-): 1280x1024 @ V-freq: 60.00 Hz, H-freq: 63.73 KHz
# Modeline "GDM-1950" 109.62 1280 1336 1472 1720 1024 1024 1026 1062 -hsync -vsync
# 1600x1000 @ 60Hz
# Modeline "1600x1000" 133.142 1600 1704 1872 2144 1000 1001 1004 1035 +hsync +vsync
# 1600x1000 @ 75Hz
# Modeline "1600x1000" 169.128 1600 1704 1880 2160 1000 1001 1004 1044 +hsync +vsync
# 1600x1000 @ 85Hz
# Modeline "1600x1000" 194.202 1600 1712 1888 2176 1000 1001 1004 1050 +hsync +vsync
# 1600x1000 @ 100Hz
# Modeline "1600x1000" 232.133 1600 1720 1896 2192 1000 1001 1004 1059 +hsync +vsync
# 1600x1024 @ 60Hz
# Modeline "1600x1024" 136.385 1600 1704 1872 2144 1024 1027 1030 1060 +hsync +vsync
# 1600x1024 @ 75Hz
# Modeline "1600x1024" 174.416 1600 1712 1888 2176 1024 1025 1028 1069 +hsync +vsync
# 1600x1024 @ 76Hz
# Modeline "1600x1024" 170.450 1600 1632 1792 2096 1024 1027 1030 1070 +hsync +vsync
# 1600x1024 @ 85Hz
# Modeline "1600x1024" 198.832 1600 1712 1888 2176 1024 1027 1030 1075 +hsync +vsync
# 1920x1080 @ 60Hz
# Modeline "1920x1080" 172.798 1920 2040 2248 2576 1080 1081 1084 1118 -hsync -vsync
# 1920x1080 @ 75Hz
# Modeline "1920x1080" 211.436 1920 2056 2264 2608 1080 1081 1084 1126 +hsync +vsync
# 1920x1200 @ 60Hz
# Modeline "1920x1200" 193.156 1920 2048 2256 2592 1200 1201 1203 1242 +hsync +vsync
# 1920x1200 @ 75Hz
# Modeline "1920x1200" 246.590 1920 2064 2272 2624 1200 1201 1203 1253 +hsync +vsync
# 2048x1536 @ 60
# Modeline "2048x1536" 266.952 2048 2200 2424 2800 1536 1537 1540 1589 +hsync +vsync
# 2048x1536 @ 60
# Modeline "2048x1536" 266.952 2048 2200 2424 2800 1536 1537 1540 1589 +hsync +vsync
# 1400x1050 @ 60Hz M9 Laptop mode
# ModeLine "1400x1050" 122.000 1400 1488 1640 1880 1050 1052 1064 1082 +hsync +vsync
# 1920x2400 @ 25Hz for IBM T221, VS VP2290 and compatible display devices
# Modeline "1920x2400@25" 124.620 1920 1928 1980 2048 2400 2401 2403 2434 +hsync +vsync
# 1920x2400 @ 30Hz for IBM T221, VS VP2290 and compatible display devices
# Modeline "1920x2400@30" 149.250 1920 1928 1982 2044 2400 2402 2404 2434 +hsync +vsync

EndSection


At 1280x960 I'm at 75hz and at 1280x1024 i'm at 85hz. I need to run at 60hz for both of these resolutions. The reason is that this is a fairly old but good quality monitor 22" CRT, but if it displays anything other than 60hz these days the screen is all shaky and kind of blurry and really irritates my eyes. I can't seem to force it to 60hz. You can see the modifications I made to both monitor sections. Is there some kind of auto-detection that is overriding my manual changes?

Just a separate issue: When I play tux racer for example, it changes my res to play. Then when i quit it attempts to change it back, but it changes it to 1024x768 with a desktop larger than the res (my 1280x1024 i suppose), i have to kill X and restart it to have it display right again. ctrl-alt+ and minus don't help.

Last edited by dracflamloc; 05-07-2004 at 09:53 AM.
 
Old 05-07-2004, 09:52 AM   #2
aaa
Guru
 
Registered: Jul 2003
Location: VA
Distribution: Slack 10.1
Posts: 2,194

Rep: Reputation: 46
See this:
http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
 
  


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