Created attachment 1245579 [details] Backtrace of gnome-shell before crash I use Fedora Rawhide since November. And sometimes Gnome-Shell crashed, especially when I used Alt+Tab command. The system is up to date, my graphical card is a nVidia Quadro 1000m powered by nouveau driver. I have backtraces, all of it mentioned __memcpy_sse2_unaligned_erms as last function. systemd-coredump generates core dump for gnome-shell, but I can't find this file. Before, with ABRT I can do it.
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
I also have problems when using nouveau and wayland in a fresh fedora 26 workstation (x86_64) install (from the released live workstation iso). The gdm login screen comes up, but as soon as I try to login I get a mostly green wavy pointillist pattern filling the screen and the system appears to be frozen - won't respond to any keypresses, won't move the mouse pointer. My graphics card is: 01:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 960] (rev a1) When I hit the reset switch to get the system to reboot and switch my login session to "Gnome on xorg" it logs in fine and the graphics seem to function perfectly. Possibly relevant rpms I'm running (I have done one dnf update since the install): xorg-x11-drv-nouveau-1.0.15-1.fc26.x86_64 kernel-4.11.9-300.fc26.x86_64
I can confirm the same exact problem with Tom Horsley with graphics card: NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1)
I have the same behavior as Tom Horsley as well, except even trying to start Gnome on X fails. Just a simple startx will lock the machine. 02:00.0 VGA compatible controller: NVIDIA Corporation NV41 [GeForce 6800] (rev a2) kernel-4.11.11-300.fc26.x86_64 xorg-x11-drv-nouveau-1.0.15-1.fc26.x86_64 all updates current
Confirming same behavior as Tom Horsley: kernel-4.11.11-300.fc26.x86_64 xorg-x11-drv-nouveau-1:1.0.15-1.fc26.x86_64 01:00.0 VGA compatible controller: NVIDIA Corporation GK110 [GeForce GTX 780] (rev a1) Attempting to log in via Gnome /w Wayland locks the system and requires a reset. Logging in with Gnome w/ Xorg works fine.
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