Description of problem: Simply run the following command on a remote machine where you have enabled X forwarding over SSH: $ qemu-system-x86_64 -no-user-config -nodefaults -display gtk -vga cirrus Of course there is no OS so it'll just get stuck in the BIOS. Question: Is it able to open a window? For Rawhide, no. The process just gets stuck with no activity (strace shows no system calls being made). Version-Release number of selected component (if applicable): Fails with: qemu-2.3.0-3.fc23.x86_64 qemu-2.3.0-2.fc23.x86_64 Works with: qemu compiled from source (968bb75c348a40) How reproducible: 100% Steps to Reproduce: 1. Run the command above on a remote machine.
Created attachment 1025038 [details] strace-qemu.log strace of process
Does any gtk app work? Try bare 'virt-viewer' or something
Very good point. I tested it with xterm, which of course isn't a gtk app. virt-viewer *does* hang. So it's something in gtk. Reassigning ...
Turns out to be bug 1174257. The workaround is to set LIBGL_DRI3_DISABLE=1 *** This bug has been marked as a duplicate of bug 1174257 ***