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modprobe --resolve-alias nvidiafb
modinfo $(modprobe --resolve-alias nvidiafb)
lsof +D /usr/lib/xorg/modules/drivers/
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
Xorg 2488 root mem REG 8,49 23624 26346422 /usr/lib/xorg/modules/drivers/fbdev_drv.so
Xorg 2488 root mem REG 8,49 90360 26347089
/usr/lib/xorg/modules/drivers/modesetting_drv.so
Xorg 2488 root mem REG 8,49 217104 26346424 /usr/lib/xorg/modules/drivers/nouveau_drv.so
Xorg 2488 root mem REG 8,49 7813904 26346043 /usr/lib/xorg/modules/drivers/nvidia_drv.so
cat /var/log/Xorg.0.log
] (II) LoadModule: "nvidia"
[ 29.047] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 29.047] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 29.047] compiled for 4.0.2, module version = 1.0.0
[ 29.047] Module class: X.Org Video Driver
[ 29.047] (II) NVIDIA dlloader X Driver 410.48 Thu Sep 6 06:27:34 CDT 2018
[ 29.047] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 29.047] (II) Loading sub module "fb"
[ 29.047] (II) LoadModule: "fb"
[ 29.047] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 29.047] (II) Module fb: vendor="X.Org Foundation"
[ 29.047] compiled for 1.19.6, module version = 1.0.0
[ 29.047] ABI class: X.Org ANSI C Emulation, version 0.4
[ 29.047] (II) Loading sub module "wfb"
[ 29.047] (II) LoadModule: "wfb"
[ 29.047] (II) Loading /usr/lib/xorg/modules/libwfb.so
[ 29.048] (II) Module wfb: vendor="X.Org Foundation"
[ 29.048] compiled for 1.19.6, module version = 1.0.0
[ 29.048] ABI class: X.Org ANSI C Emulation, version 0.4
[ 29.048] (II) Loading sub module "ramdac"
[ 29.048] (II) LoadModule: "ramdac"
[ 29.048] (II) Module "ramdac" already built-in
[ 29.095] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please see the
[ 29.095] (EE) NVIDIA: system's kernel log for additional error messages and
[ 29.095] (EE) NVIDIA: consult the NVIDIA README for details.
[ 29.095] (EE) No devices detected.
vi /var/log/kern.log
... it looks like we are back to an unsigned module tainting the kernel.
vi /etc/default/grub
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="nvidia-drm.modeset=1"
GRUB_CMDLINE_LINUX=""
update-grub
Sourcing file `/etc/default/grub'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.18.0-25-generic
Found initrd image: /boot/initrd.img-4.18.0-25-generic
Found linux image: /boot/vmlinuz-4.18.0-20-generic
Found initrd image: /boot/initrd.img-4.18.0-20-generic
Found linux image: /boot/vmlinuz-4.18.0-18-generic
Found initrd image: /boot/initrd.img-4.18.0-18-generic
Found linux image: /boot/vmlinuz-4.15.0-54-generic
Found initrd image: /boot/initrd.img-4.15.0-54-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
device-mapper: reload ioctl on osprober-linux-nvme0n1p1 failed: Device or resource busy
Command failed
done
https://askubuntu.com/questions/1048274/ubuntu-18-04-stopped-working-with-nvidia-drivers
