No wake up
Symptoms
When resuming from a power
management state the computer may
display:
●
Blank screen
●
Some light activity
Possible causes
Power-saving mode; multiple-display setting.
Troubleshooting steps
1.
Verify that front power light (
7. Status lights, blinking light codes, troubleshooting
lights, and POST error messages on page 73
) is blinking (indicating Sleep state). Press
power button to exit Sleep.
2.
Reset BIOS to default (associated with OS Power Management in Power Menu) (
Update BIOS and drivers on page 68
3.
Verify power management settings in Windows Power Options. Disable Sleep options if
the issue is resolved.
4.
Screen saver is set. Press any key or touch TouchPad to resume.
5.
Verify that Display Choice is set to external video only. Toggle screen control key
combination
Fn + F4
or
Windows logo
+
P
.
Tips and tricks
If you are using a docking station, set your notebook display as a primary display. When the
computer is not docked, you may think it is in a power-saving state, but the screen image
may actually display on an external display device in the docking configuration.
The order in which the computer shows video is as follows:
1.
Auto: (default). When set to Auto, hybrid graphics is disabled for certain Linux operating
systems.
2.
Hybrid graphics: Both integrated and discrete graphics are used.
3.
Discrete graphics: Only discrete graphics is used.
100 Chapter 6 Troubleshooting guide
Содержание ZBook Studio G4
Страница 4: ...iv Important Notice about Customer Self Repair Parts ...
Страница 6: ...vi Safety warning notice ...
Страница 28: ...3 Illustrated parts catalog Computer major components 16 Chapter 3 Illustrated parts catalog ...
Страница 148: ...6 Open the crash dump file 136 Chapter 6 Troubleshooting guide ...
Страница 182: ...WLAN device 15 WLAN label 15 WLAN module removal 33 spare part numbers 19 33 workstation guidelines 27 170 Index ...