Title: How can I change the update rate of XWindow and FVWM?

Bytes. I remember a post in hiweed saying that there was a command to set the resolution, refresh rate, and then go to the XWindow. I forgot the command and I couldn't find it after searching for a long time. The one who taught me how to do this. Method 1:
Directly compile/etc/X11/XF86Config-4 file! With graphics card and display requirements, generally 17 "display at most X can be up to 85hz update rate, but in 1280x1024 can only 60Hz, find the display module in the above files, check whether one option exists. If not, add the option "usefbdev" "false" parameter. Then, choose gnome in desktop preference-display resolution.

Method 2:
Use dpkg-reconfigure xserver-xfree86 settings under the terminal root, and then under/root rename the xf86config or xfree86 file: XF86Xconfig-4 and then copy to/etc/X11, restart X. Write more details.

By default, I use the 75Hz update rate for my display at 1152x864. You can use the following method:
$ GTF 1152 864 85
The result is as follows:
#1152x864 @ 85.00Hz (GTF) hsync: 77.10 kHz; pclk: 119.65 MHz
Modeline "1152x864_85.00" 119.65 1152 1224 1352 1552 864 865
-Hsync + vsync

Then you can modify the Display section of your/etc/X11/XF86Config-4:

PHP code:
Section "Monitor"
Identifier "generic monitor"
#1152x864 @ 85.00Hz (GTF) hsync: 77.10 kHz; pclk: 119.65 MHz
Modeline "1152x864_85.00" 119.65 1152 1224 1352 1552 864 865-hsync + vsync
Option "dpms"
Endsection

Then, write a letter under screen, such as mine:
Defaultdepth 24
.......
Subsection "display"
Depth 24
Modes "1152x864_85.00" "1024x768" "800x600" "640x480"
Endsubsection

Note: 1152x864_85.00 in Modes