Originally Posted by jschiwal
You could try using the gtf program to generate your own modeline.
Insert the modeline in the Monitor section. I've had better look changing the name from "1440x900_60.00" to "1440x900_60". I don't know why but the ".00" seems to confuse X11. Change the Modes to "1440x900_60". I used 60hz for this example. You may change that.
You might want to post the "Monitor" section. Someone with the same computer may spot a difference. ( Is this a laptop LCD display? I though Lenova made Laptops. )
Thanks for your suggestions. The original xorg.conf file was pretty terse; I guess a lot of things default nowadays. Here's what I have currently:
# Xorg configuration created by pyxf86config
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Viewport 0 0
Modes "1440x900_60" "1280x1024_76"
# === mode lines based on GTF ===
# 1440x900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 106.47 MHz
Modeline "1440x900_60" 106.47 1440 1520 1672 1904 900 901 904 932 -HSync +Vsync
# 1280x1024 @ 76.00 Hz (GTF) hsync: 81.32 kHz; pclk: 141.82 MHz
Modeline "1280x1024_76" 141.82 1280 1376 1512 1744 1024 1025 1028 1070 -HSync +Vsync
I logged out (that restarts the X11 server, right) and found it made no difference. I'm pretty sure it's reading the xorg.conf file, because the first time I had some syntax error and it complained about that.
I have some other data that may prove helpful: I used System>Preferences>Hardware>Screen Resolution to try all the available screen resolutions. *all* of them, except for the 1440x900@60 option, used the full width of the screen. However, every one of the full-screen resolutions also ended up slightly distorted. For example, a circle comes out looking like a short and fat oval: squashed in the vertical and stretched in the horizontal. The resolutions were:
Of course, all of these have an aspect ratio of 4:3, which is the aspect ratio of a standard TV, not a wide-screen. The 1440x900 resolution is an aspect ratio of 1.6, so it's not surprising that it should be different.
The 1440x900@60 option continues to have the black band of unused pixels, and on that resolution circles look oval in the other direction: narrow and tall.
Interestingly, I left the machine with the 1280x1024@70 resolution, and when I logout, it returns to 1440x900 with the black band, but when I login it switches to 1280x1024. Is that because the resolution is a personal setting for root?
Any other ideas? I really appreciate the help.
PS: to answer your other question, Lenovo does make desktops as well as laptops. This model is a ThinkCentre M55e.