Public bug reported: In a device that has both HDMI ouput *and* a serial console, no log-in prompt appears in the serial console if no monitor is connected, when "splash" is added to the kernel command line.
I see plymouthd taking 100% of the CPU. If I connect a monitor, then I get the serial console and plymouthd stops. That HDMI is connected or not should not influence the serial console prompt. plymouthd backtrace shows it waiting for events: #0 0x0000ffff9a948754 in __GI_epoll_pwait (epfd=3, events=events@entry=0xffff9aa3e2a0 <events>, maxevents=maxevents@entry=64, timeout=-1, set=set@entry=0x0) at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42 #1 0x0000ffff9a9488e0 in epoll_wait (epfd=<optimized out>, events=events@entry=0xffff9aa3e2a0 <events>, maxevents=maxevents@entry=64, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/epoll_wait.c:32 #2 0x0000ffff9aa1b818 in ply_event_loop_process_pending_events (loop=0xaaaad24b53e0) at ply-event-loop.c:1230 #3 ply_event_loop_process_pending_events (loop=0xaaaad24b53e0) at ply-event-loop.c:1210 #4 0x0000ffff9aa1be98 in ply_event_loop_run (loop=0xaaaad24b53e0) at ply-event-loop.c:1310 #5 0x0000aaaace94c62c in main (argc=4, argv=0xffffefe2d748) at main.c:2294 ** Affects: plymouth (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931718 Title: No login prompt on serial if no monitor connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1931718/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs