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MattCow1
Paper Tape
Posts: 11
Registered: ‎12-29-2010
Location: US
Views: 396
Message 1 of 5

T450 screen unplugging?

When I close the lid of my computer, it makes the alert noise as if you unplugged a device. When I open the lid, it makes the alert noise as if you plugged in a new device. The screen takes a few seconds to turn on, and all of my windows which were open will be resized, and all of my desktop icons are rearranged.

Happens every time I open or close the lid, and it's been about a week now.

About two months ago, I actually sent this in to Lenovo for some repair from a drop, and they replaced just some plastic parts of the shell and the keyboard. It worked fine when I got it back, and once the screen is on, it continues to work fine. I'm mentioning this because I don't think the screen is becoming physically unplugged, it looks like it is in top shape after the repairs.

 

Any thoughts?

-Matt

MattCow1
Paper Tape
Posts: 11
Registered: ‎12-29-2010
Location: US
Views: 328
Message 2 of 5

Re: T450 screen unplugging?

I downloaded a program called EventGhost to try to dig a little more (Lenovo tech support didn't try to dig in to the issue at all).

Here's my log when I close, then open the lid.

Does this behavior make sense to anyone?

 

22:42:15 System.DeviceRemoved [u'\\\\?\\DISPLAY#LEN40A3#4&2ba606e7&0&UID265988#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']
22:42:15 System.DeviceAttached [u'\\\\?\\DISPLAY#Default_Monitor#4&2ba606e7&0&UID200771#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']
22:42:15 Task.NewWindow.explorer
22:42:15 Task.Activated.explorer
22:42:15 Task.ClosedWindow.explorer
22:42:18 System.DeviceRemoved [u'\\\\?\\DISPLAY#Default_Monitor#4&2ba606e7&0&UID200771#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']
22:42:18 System.DeviceAttached [u'\\\\?\\DISPLAY#LEN40A3#4&2ba606e7&0&UID265988#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}']
22:42:18 Task.NewWindow.explorer
22:42:18 Task.Deactivated.explorer
22:42:18 Task.Activated.explorer
22:42:18 Task.ClosedWindow.explorer

MattCow1
Paper Tape
Posts: 11
Registered: ‎12-29-2010
Location: US
Views: 315
Message 3 of 5

Re: T450 screen unplugging?

Lenovo forum post with same issue

The scaling change did not fix it for me, but the last suggestion, to uninstall the Intel Graphics Display Adapter worked.

Dunk1234
Paper Tape
Posts: 4
Registered: ‎05-10-2018
Location: GB
Views: 291
Message 4 of 5

Re: T450 screen unplugging?

I have the same problem since upgrading windoes and the BIOS. I commented about it in this thread

MattCow1
Paper Tape
Posts: 11
Registered: ‎12-29-2010
Location: US
Views: 288
Message 5 of 5

Re: T450 screen unplugging?

I also ran a utility called EventGhost that logs all of the events. It allowed me to see what exactly was happening with the connection noises. 

My built in screen was disconnecting then it thoughtt some other screen was being connected on close. Then the reserve on open. 

It didn't help me fix it, but maybe it'll help you .

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