[SOLVED] External Monitor Wake Up Problems

Framework Laptop 13 Linux
1

Hello guys, Im on Fedora 37 and I connected an external monitor via USB-C. Im using it as the main display while the framework display is turned off.

Everything works great except when my framework goes to sleep and I wake it up, only the laptop display wakes up while the external display keeps sleeping.

The only thing that helps is removing the USB-C cable and plugging it back in. Then the external monitor wakes up and the laptop display turns off like it should.

Is there anything I can do to change this behavior, change some settings maybe or install something?

2

I generally recommend using DisplayPort or HDMI.

Sounds like you might be using an adapter that is connecting from your Framework (USB-C port) to the monitor as…USB-C?

3

I’m using the USB-C Upstream port of my external monitor which works like Thunderbolt and enables me to have only one cable connected to my laptop (power, image, data).

But I just found out what the problem was. Its my LG’s “Deep Sleep” Monitor option. So if anybody has the same problem with an LG monitor just turn off the Deep Sleep option.

Its still unknown to me why the monitor doesn’t wake up with the Deep Sleep on when other devices like my desktop PC don’t have that problem but that’s off-topic now.

1 Like
4

Okay, glad you were able to drill this down. Deep and external displays can be hit and miss. Thanks!

Going to mark this as resolved.

5

Knowingly necroposting for which I am sorry - double sorry since I am not even a framework user - but this thread is number one on google for me. And I was plagued by this issue for a very long time.

So I have Linux and an external display to my laptop via usb-c (which means DP-alt mode I guess). After system timeout for “turn off screen” both screens turn off. On e.g. mouse input only the laptop screen wakes up.

I fixed this by disabling usb autosuspend. I am using TLP so I just added

USB_AUTOSUSPEND=0

to /etc/tlp.conf

I hope this post may stay.