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pop-os / gnome-shell

Pop!_OS fork of https://git.launchpad.net/~ubuntu-desktop/ubuntu/+source/gnome-shell
GNU General Public License v2.0
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Second display doesn't wake up after going to sleep. #30

Open mange76 opened 4 years ago

mange76 commented 4 years ago

I have a dell g3 laptop with a nvidia 1060 dgpu. I use both the builtin full hd display and a samsung 4k screen attached to the hdmi port.

I have set up my displays to use the "join displays" mode and i have selected the 4k display as my primary display. If the displays goes to sleep and i wakes them up then only the laptop display wakes up. To work around this i can open the display settings om that display and select mirror mode and this wakes up the screen connected to the hdmi port and when i revert this it stays awake.

I have the same issue if i reboot the laptop, the login window is not visible on the laptop display and the attached display flashes and goes back to sleep. But i can type the username and password to log in. After that i can use the "mirror" workaround to wake up the secondary monitor.

To be able to lock my screen without to have the screens put to sleep i use the "unblank lock screen extension" as a workaround.

Right now a have pop!_os 20.04 installed but this has been an issue with previous versions as well.

danielcrane commented 3 years ago

I have exactly the same issue, it's extremely frustrating.

As you said, the easiest workaround I've found so far is to switch to mirror mode and then revert changes, however this doesn't work in all cases.