0

After recent upgrade (sudo apt upgrade -y) my screen resolution is stuck at 640, neither ethernet nor wifi is being detected. I tried reinstalling nvidia drivers but the problem persists.

However, when I boot to recovery mode and select the option 'Resume normal boot', everything works fine (screen resolution, network etc.)

Configuration:

OS: Ubuntu 22.04.1 LTS x86_64 
Kernel: 5.15.0-56-generic 
Uptime: 16 mins 
Packages: 2355 (dpkg), 20 (snap) 
Shell: bash 5.1.16 
Resolution: 1920x1080 
DE: GNOME 42.5 
WM: Mutter 
WM Theme: Adwaita 
Theme: Yaru [GTK2/3] 
Icons: Yaru [GTK2/3] 
Terminal: gnome-terminal 
CPU: Intel i7-3770 (8) @ 3.900GHz 
GPU: NVIDIA GeForce GT 730 
Memory: 2041MiB / 15958MiB

Any help is highly appreciated. Thank you.

guiverc
  • 30,396
Shine J
  • 101

3 Answers3

0

I figured it out. The last update must have updated the kernel and changed the default kernel in the grub boot menu.

Step 1: Try booting with a different kernal from Advanced boot options (see how: How to access Advanced Options in GRUB?). I was successfully able to boot with linux-image-5.15.0-56-generic (this could be different for you system). If this doesn't work, choose recovery mode and choose the root (drop to the root shell prompt) option (see how: https://www.maketecheasier.com/boot-recovery-mode-ubuntu/). Ensure that you enable networking (just in case).

Step 2: Open terminal (or if you're already in the shell prompt) and use this command to check the kernels on your system:

dpkg -l | grep linux-image

output:

rc  linux-image-5.15.0-1021-intel-iotg              5.15.0-1021.26                          amd64        Signed kernel image intel-iotg
ii  linux-image-5.15.0-1025-oracle                  5.15.0-1025.31                          amd64        Signed kernel image oracle
rc  linux-image-5.15.0-43-generic                   5.15.0-43.46                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-46-generic                   5.15.0-46.49                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-47-generic                   5.15.0-47.51                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-48-generic                   5.15.0-48.54                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-50-generic                   5.15.0-50.56                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-52-generic                   5.15.0-52.58                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-53-generic                   5.15.0-53.59                            amd64        Signed kernel image generic
ii  linux-image-5.15.0-56-generic                   5.15.0-56.62                            amd64        Signed kernel image generic
rc  linux-image-5.15.0-56-lowlatency                5.15.0-56.62                            amd64        Signed kernel image lowlatency
ii  linux-image-generic-hwe-22.04                   5.15.0.56.54                            amd64        Generic Linux kernel image

Step 3: Notice the kernel linux-image-5.15.0-56-generic in the list from step 1. I want grub to choose this as the default kernel.

Step 4: Use this command to find the kernel in grub.cfg

sudo nano /boot/grub/grub.cfg

Step 5: Find menuentry followed by submenu

Here, menuentry and submenu is exactly what you see in grub menu when you boot your computer. menuentry being at position - 0, submenu - 1 enter image description here

Notice that I have menuentry 'Ubuntu, with Linux 5.15.0-1025-oracle' at position - 0 within the submenu. This is exactly what I don't want to boot to. We're going to change this.

Step 6: Find the kernel that worked, within the submenu. I found mine at pos - 2 (counting from 0) enter image description here

Step 7: Exit nano, and type this command to edit the grub boot settings to set the default kernel

sudo nano /etc/default/grub

Step 8: Set GRUB_DEFAULT =0 to GRUB_DEFAULT = "1>2" enter image description here

Type Ctrl+o to write, Ctrl+x to exit

Step 9: update grub with new settings with this command:

sudo update-grub

Step 10: reboot with reboot

Shine J
  • 101
0

I think this is the same issue as this No network after latest update: Ubuntu 22.04

I solved the issue by uninstalling the kernels that were automatically installed:

sudo apt remove linux-image-5.15.0-1025-oracle linux-modules-5.15.0-1025-oracle linux-modules-5.15.0-1021-intel-iotg linux-modules-5.15.0-56-lowlatency
Angel
  • 46
0

I've had the same problem but with onboard bluetooth and audio since yesterday (05.12.2022). Additionaly my nvidia graphics (GT 730) couldn't load the correct driver anymore (obvious bad resulotion).

I first used Shine J's solution but used GRUB customizer as GUI. Reboot with the correct kernel. After that removed the wrong new kernels like Angel suggested. Problem solved, but had to enable bluetooth again. For bluetooth I enabled it in console:

sudo systemctl enable bluetooth

After that I also have had to uninstall the nvidia graphic driver (which was the one for the wrong oracle kernel flavor):

sudo apt-get purge ^nvidia-

and install the driver with the correct flavor:

sudo apt install linux-modules-nvidia-470-5.15.0-56-generic

After a system reboot everything was back again. Thanks for your help! I was glad to see that I'm not alone with this problem.

This is my first post on askUbuntu so I couldn't upvote your questions nor the other helpful answers.

Jan
  • 1