On Tue, 2022-01-18 at 18:40 -0500, Sam Varshavchik wrote: > Rogan Dawes writes: > > > have to reboot to allow the laptop to detect the screen again. > > Xrandr does > > not detect the display if run manually, and the Settings app > > Displays page > > also doesn't show the TV. > > > > This is a rather difficult thing to google, I have had zero results > > in my > > searching. > > This seems to be a long running issue with various Nvidia cards, in > my > experience. If a monitor is present and powered on at boot time > everything is > fine. If the monitor gets powered off or disconnected it won't ever > come > alive again, until the next reboot. This is not limited just to > nvidia's > drivers. In all other respects my old geforce gtx 285 works just fine > with > nouveau; this is the only defect.
I have a single monitor connected via a KVM switch to two video outputs, the onboard Intel and an NVidia GPU card. I use this setup for VMs with GPU passthrough. The first switch I tried had exactly this problem, i.e. if I switched away from the NVidia and then back again it would remain off. I ended up getting a different model KVM switch that maintains each of its connections "live" so the problem doesn't occur. Possibly this is something the OP could consider. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
