[Bug 1871394] Re: modeset: Loss of VGA signal (ast2500) on login
Thank you for reporting this bug to Ubuntu. Ubuntu 18.04 (bionic) reached end-of-standard-support on May 31, 2023. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it anymore. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in. ** Changed in: mutter (Ubuntu) Status: New => Won't Fix ** Changed in: xorg-server (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1871394] Re: modeset: Loss of VGA signal (ast2500) on login
I get the same behavior and many of the same syslog messages when I boot to XUbuntu, which does not rely on mutter. I am still investigating the kernel bug you referred me to. Thanks. ** Attachment added: "Xubuntu does not rely on mutter, but exhibits the same beahvior and similar syslog messages." https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1871394/+attachment/5350512/+files/xubuntu_%28no_mutter%29_dmesg_syslog_xrandr.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1871394] Re: modeset: Loss of VGA signal (ast2500) on login
Oh, actually this might be a mutter bug or even a kernel bug related to this: https://gitlab.gnome.org/GNOME/mutter/-/issues/182 ** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #182 https://gitlab.gnome.org/GNOME/mutter/-/issues/182 ** Changed in: mutter (Ubuntu) Status: Incomplete => New ** Changed in: xorg-server (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1871394] Re: modeset: Loss of VGA signal (ast2500) on login
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 Desktop Bugs, which is subscribed to mutter 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1871394] Re: modeset: Loss of VGA signal (ast2500) on login
The attached Xorg log files seem to show that it knows about both GPUs and it claims to be using both... 1. Are you able to work around the problem by logging into "Ubuntu on Wayland" instead? 2. Does the same problem also occur in Ubuntu 20.04 (to be released soon)? http://cdimage.ubuntu.com/daily-live/current/ or in 19.10 (https://ubuntu.com/download/desktop)? ** Summary changed: - no dual head video with 2 on board sources: ast2500 and i915 + modeset: Loss of VGA signal (ast2500) on login ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete ** Also affects: mutter (Ubuntu) Importance: Undecided Status: New ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
