Lenovo ThinkPad L420 (English) User Guide - Page 70

Using the DVI monitor - graphics driver

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7. Click the Monitor tab. Check the monitor information window to make sure that the monitor type is correct. If it is, click OK to close the window; otherwise do as follows. 8. If more than two monitor types are displayed, select Default Monitor. 9. Click Properties. 10. Click the Driver tab. 11. Click Update Driver. The Hardware Update Wizard appears. 12. Click No, not this time, and then click Next. 13. Select Install from a list or specific location (Advanced), and then click Next. 14. Select Don't search. I will choose the driver to install, and then click Next. 15. Clear the Show compatible hardware check box. 16. Select Manufacturer and Model for your monitor. If you cannot find your monitor in the list, stop the installation of this driver and use the driver shipped with your monitor. 17. After updating the driver, click OK to close the Properties window. 18. Set Colors and Screen area in the Display Properties window. 19. Click OK. Considerations for attaching an external monitor • When installing an operating system, you must install the display driver for your monitor that is supplied with the computer, and the Monitor INF file that is supplied with the external monitor. • If you set a resolution higher than the resolution you are using on the panel, and use a panel that does not support that resolution, take advantage of the virtual screen function, which enables you to display only a part of the high-resolution screen image your computer produces. You can see other parts of the image by moving the screen with the TrackPoint or other pointing device. • If the external monitor you are using is outdated, the resolution and the refresh rate may be limited. Using the DVI monitor If your computer has one of the optional expansion units, a ThinkPad Mini Dock Plus Series 3 or a ThinkPad Mini Dock Series 3, you can use the Digital Visual Interface (DVI) monitor through the DVI connector of that unit. Notes: • The screen mode that can be used depends on the specifications of the DVI monitor. • Before you attach the DVI monitor, make sure that the computer is attached to the expansion unit and the system works properly. To attach the DVI monitor, do as follows: 1. Turn off the computer. 2. Connect the DVI monitor to the DVI connector of the expansion unit, and then connect the monitor to an electrical outlet. 3. Turn on the DVI monitor and the computer. The system starts. If the computer output does not appear on the DVI monitor, do as follows: For a computer that has the Intel® display adapter: 1. Press Ctrl+Alt+F12. The "Intel Graphics Media Accelerator Driver for mobile" window appears. 2. Select Digital Display , Intel Dual Display Clone, or Extended Desktop. If you select Digital Display, the computer output appears on the DVI monitor only. If you select Intel Dual Display Clone or Extended Desktop, the output appears both on the computer display and on the DVI monitor. 3. Click OK. 52 User Guide

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7. Click the
Monitor
tab. Check the monitor information window to make sure that the monitor type is
correct. If it is, click
OK
to close the window; otherwise do as follows.
8. If more than two monitor types are displayed, select
Default Monitor
.
9. Click
Properties
.
10. Click the
Driver
tab.
11. Click
Update Driver
. The Hardware Update Wizard appears.
12. Click
No, not this time
, and then click
Next
.
13. Select
Install from a list or specific location (Advanced)
, and then click
Next
.
14. Select
Don't search. I will choose the driver to install
, and then click
Next
.
15. Clear the
Show compatible hardware
check box.
16. Select
Manufacturer
and
Model
for your monitor. If you cannot find your monitor in the list, stop the
installation of this driver and use the driver shipped with your monitor.
17. After updating the driver, click
OK
to close the Properties window.
18. Set
Colors
and
Screen area
in the Display Properties window.
19. Click
OK
.
Considerations for attaching an external monitor
•
When installing an operating system, you must install the display driver for your monitor that is supplied
with the computer, and the Monitor INF file that is supplied with the external monitor.
•
If you set a resolution higher than the resolution you are using on the panel, and use a panel that does not
support that resolution, take advantage of the virtual screen function, which enables you to display only a
part of the high-resolution screen image your computer produces. You can see other parts of the image
by moving the screen with the TrackPoint or other pointing device.
•
If the external monitor you are using is outdated, the resolution and the refresh rate may be limited.
Using the DVI monitor
If your computer has one of the optional expansion units, a ThinkPad Mini Dock Plus Series 3 or a ThinkPad
Mini Dock Series 3, you can use the Digital Visual Interface (DVI) monitor through the DVI connector
of that unit.
Notes:
•
The screen mode that can be used depends on the specifications of the DVI monitor.
•
Before you attach the DVI monitor, make sure that the computer is attached to the expansion unit and
the system works properly.
To attach the DVI monitor, do as follows:
1. Turn off the computer.
2. Connect the DVI monitor to the DVI connector of the expansion unit, and then connect the monitor
to an electrical outlet.
3. Turn on the DVI monitor and the computer. The system starts.
If the computer output does not appear on the DVI monitor, do as follows:
For a computer that has the Intel
®
display adapter:
1. Press Ctrl+Alt+F12. The “Intel Graphics Media Accelerator Driver for mobile” window appears.
2. Select
Digital Display
,
Intel Dual Display Clone
, or
Extended Desktop
. If you select
Digital Display
,
the computer output appears on the DVI monitor only. If you select
Intel Dual Display Clone
or
Extended Desktop
, the output appears both on the computer display and on the DVI monitor.
3. Click
OK
.
52
User Guide