vilwarin
November 26th, 2020, 05:48 PM
Problem Description:
Starting any display manager (tried gdm, lightdm, sddm) while using nvidia drivers (tried 390, 440, 450, 455) after upgrading Ubuntu from 18.04. to 20.04. results in a black screen.
Kernel:
$uname -r
5.6.0-1033-oem
I did not find any noticeable errors in /var/log/syslog /var/log/Xorg.0.log or ~/.xsession-errors. Also no noticeable errors in demesg or systemctl status display-manager
nvidia drivers seem to load fine. nvidia-smi displays my card Geforce GTX 950M and lsmod lists nvidia drivers.
$nvidia-smi
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 440.100 Driver Version: 440.100 CUDA Version: 10.2 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+================= =====+======================|
| 0 GeForce GTX 950M Off | 00000000:01:00.0 Off | N/A |
| N/A 60C P8 N/A / N/A | 19MiB / 2004MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|================================================= ============================|
| 0 4007 G /usr/lib/xorg/Xorg 9MiB |
| 0 4479 G /usr/bin/gnome-shell 1MiB |
+-----------------------------------------------------------------------------+
$lsmod | grep nvidia
nvidia_uvm 962560 0
nvidia_drm 45056 4
nvidia_modeset 1114112 4 nvidia_drm
nvidia 20680704 205 nvidia_uvm,nvidia_modeset
drm_kms_helper 208896 1 nvidia_drm
drm 540672 7 drm_kms_helper,nvidia_drm
ipmi_msghandler 110592 2 ipmi_devintf,nvidia
The graphics card is an Optimus card.
with prime-select nvidia is selected:
$sudo prime-select nvidia
Info: the nvidia profile is already set
I tried to follow advice on this forum (e.g. adding nomodeset to grub, blacklisting nouveau, etc.) to no avail.
purging all nvidia drivers results in the display manager starting under nouveau driver.
before the upgrade to 20.04. the setup was running fine with nvidia-440 drivers.
Any ideas what I could do?
Starting any display manager (tried gdm, lightdm, sddm) while using nvidia drivers (tried 390, 440, 450, 455) after upgrading Ubuntu from 18.04. to 20.04. results in a black screen.
Kernel:
$uname -r
5.6.0-1033-oem
I did not find any noticeable errors in /var/log/syslog /var/log/Xorg.0.log or ~/.xsession-errors. Also no noticeable errors in demesg or systemctl status display-manager
nvidia drivers seem to load fine. nvidia-smi displays my card Geforce GTX 950M and lsmod lists nvidia drivers.
$nvidia-smi
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 440.100 Driver Version: 440.100 CUDA Version: 10.2 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+================= =====+======================|
| 0 GeForce GTX 950M Off | 00000000:01:00.0 Off | N/A |
| N/A 60C P8 N/A / N/A | 19MiB / 2004MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|================================================= ============================|
| 0 4007 G /usr/lib/xorg/Xorg 9MiB |
| 0 4479 G /usr/bin/gnome-shell 1MiB |
+-----------------------------------------------------------------------------+
$lsmod | grep nvidia
nvidia_uvm 962560 0
nvidia_drm 45056 4
nvidia_modeset 1114112 4 nvidia_drm
nvidia 20680704 205 nvidia_uvm,nvidia_modeset
drm_kms_helper 208896 1 nvidia_drm
drm 540672 7 drm_kms_helper,nvidia_drm
ipmi_msghandler 110592 2 ipmi_devintf,nvidia
The graphics card is an Optimus card.
with prime-select nvidia is selected:
$sudo prime-select nvidia
Info: the nvidia profile is already set
I tried to follow advice on this forum (e.g. adding nomodeset to grub, blacklisting nouveau, etc.) to no avail.
purging all nvidia drivers results in the display manager starting under nouveau driver.
before the upgrade to 20.04. the setup was running fine with nvidia-440 drivers.
Any ideas what I could do?