Ubuntu 18.04 using Wayland: The monitor connected to the AST2500 VGA has no signal during and after login. "xrandr -q" shows both devices are active. They are listed as XWAYLAND0 and XWAYLAND1. Ubuntu desktop's "Display configuration" window shows both monitors are active. I can move the monitors relative to each other and change the monitor assigned as "primary". When I change these configurations the only thing that appears to be amiss is the missing AST2500 VGA video signal.
Ubuntu 20.04 using xorg: The monitor connected to the AST2500 VGA has no signal during or after login. "xrandr -q" shows the DisplayPort and HDMI that are part of the i915 (this machine does not provide the HDMI part of the i915); it does not show the AST2500 device. lspci and lshw show the AST2500 is present. Ubuntu desktop's "Display configuration" window only has options for one monitor. Ubuntu 20.04 using Wayland: I seem to recall switching Ubuntu 20.04 from xorg to wayland using a button in the lower right corner of the login menu to present a menu that permitted me to toggle between xorg and wayland. The button only appears while I am entering the password at the login screen. Today that same button presents a different menu. The options are "Remmina kiosk" and "Ubuntu". I do not know how to toggle to Wayland without the button and I don't recall well enough to recount what I saw in Wayland earlier this week. I will look into Ubuntu 19 tomorrow. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1871394 Title: modeset: Loss of VGA signal (ast2500) on login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1871394/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
