Describe the bug
I have a Dell XPS 9550, which has both an Intel I7 and Nvidia 950M. When I do a fresh NixOS install (using NixOS-unstable), by default lightdm and sddm both cause a segmentation fault that seems to be related to nouveau. Disabling the nouveau driver with modprobe -r nouveau allows me to restart the display manager and launch a desktop environment. This happend with both SDDM and KDE Plasma, and Light with Pantheon. Log: https://gist.github.com/vlinkz/62e48c55793402d98746b92ad50ccea8
[ 9.341] (==) NOUVEAU(G0): Backing store enabled
[ 9.341] (==) NOUVEAU(G0): Silken mouse enabled
[ 9.341] (II) NOUVEAU(G0): [XvMC] Associated with Nouveau GeForce 8/9 Textured Video.
[ 9.341] (II) NOUVEAU(G0): [XvMC] Extension initialized.
[ 9.341] (==) NOUVEAU(G0): DPMS enabled
[ 9.341] (EE)
[ 9.341] (EE) Backtrace:
[ 9.341] (EE) 0: /nix/store/bnic4bpn6x1jy2j3glnzdw54km94p9xa-xorg-server-21.1.3/bin/X (OsSigHandler+0x25) [0x5b4065]
[ 9.342] (EE) 1: /nix/store/ayrsyv7npr0lcbann4k9lxr19x813f0z-glibc-2.34-115/lib/libc.so.6 (__sigaction+0x40) [0x7fad63270100]
[ 9.342] (EE) 2: /nix/store/bnic4bpn6x1jy2j3glnzdw54km94p9xa-xorg-server-21.1.3/bin/X (InitOutput+0x4e4) [0x487744]
[ 9.342] (EE) 3: /nix/store/bnic4bpn6x1jy2j3glnzdw54km94p9xa-xorg-server-21.1.3/bin/X (dix_main+0x194) [0x448694]
[ 9.343] (EE) 4: /nix/store/ayrsyv7npr0lcbann4k9lxr19x813f0z-glibc-2.34-115/lib/libc.so.6 (__libc_start_call_main+0x67) [0x7fad6325c1d7]
[ 9.343] (EE) 5: /nix/store/ayrsyv7npr0lcbann4k9lxr19x813f0z-glibc-2.34-115/lib/libc.so.6 (__libc_start_main+0x87) [0x7fad6325c297]
[ 9.343] (EE) 6: /nix/store/bnic4bpn6x1jy2j3glnzdw54km94p9xa-xorg-server-21.1.3/bin/X (_start+0x21) [0x431cd1]
[ 9.343] (EE)
[ 9.343] (EE) Segmentation fault at address 0x10
[ 9.343] (EE)
Fatal server error:
[ 9.343] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 9.343] (EE)
[ 9.343] (EE)
Steps To Reproduce
Steps to reproduce the behavior:
- Install NixOS unstable with all video driver options left at defaults
- Enable an X11 display manager such as lightdm
- Try to start display manager
Expected behavior
Display manager starting
Additional context
Notify maintainers
Not sure who
Metadata
22.05pre372961.e10da1c7f54 - Not working
21.11.337266.feea25c5865 - Working
Describe the bug
I have a Dell XPS 9550, which has both an Intel I7 and Nvidia 950M. When I do a fresh NixOS install (using NixOS-unstable), by default lightdm and sddm both cause a segmentation fault that seems to be related to nouveau. Disabling the nouveau driver with
modprobe -r nouveauallows me to restart the display manager and launch a desktop environment. This happend with both SDDM and KDE Plasma, and Light with Pantheon. Log: https://gist.github.com/vlinkz/62e48c55793402d98746b92ad50ccea8Steps To Reproduce
Steps to reproduce the behavior:
Expected behavior
Display manager starting
Additional context
"intel"toxserver.videoDriversalso works, but seemed to be disabled by default in [RFC] NixOS Xorg service: should we removeintelfrom defaultvideoDrivers#55520 and nixos/xserver: drop intel from videoDrivers #55583boot.kernelParams = [ "nouveau.modeset=0" ]makes it workNotify maintainers
Not sure who
Metadata
22.05pre372961.e10da1c7f54 - Not working
21.11.337266.feea25c5865 - Working