I'm also experiencing this problem after upgrading to Ubuntu 19.10. I'm using xserver-xorg-video-amdgpu 19.0.1-1ubuntu1 so either it's not completely fixed, or I'm experiencing a different but very similar issue.
One of the linked bug reports suggested the crash occurs in the XFCE compositor. I tried disabling the compositor: xfconf-query -c xfwm4 -p /general/use_compositing -s false This seems to be a usable workaround for now, though it does introduce some visual glitches. -- More detail: After booting to login screen, if I select an "XFCE" or "Xubuntu" session and log in, the system crashes to a black screen and is unresponsive to Ctrl-Alt-F2 or Ctrl-Alt-Del or anything else I try. (Alt+SysRq+b does reboot though.) Selecting an "Ubuntu" session is fine. After rebooting, I see 232 lines in syslog like this: WARNING: CPU: 2 PID: 274 at drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hw_sequencer.c:932 dcn10_verify_allow_pstate_change_high.cold+0xc/0x23d [amdgpu] -- Hardware and version info: $ cat /proc/cpuinfo model name : AMD Ryzen 5 2400G with Radeon Vega Graphics $ lsb_release -a Description: Ubuntu 19.10 Release: 19.10 Codename: eoan $ uname -r 5.3.0-23-generic $ apt show xserver-xorg Version: 1:7.7+19ubuntu12 $ apt show xserver-xorg-core Version: 2:1.20.5+git20191008-0ubuntu1 $ apt show xserver-xorg-video-amdgpu Version: 19.0.1-1ubuntu1 $ xfce4-session --version xfce4-session 4.14.0 (Xfce 4.14) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1842954 Title: AMD GPU hang/crash/black screen after suspend(ing) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1842954/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
