Hi Bin, Update my experiments as follows: #1 if firstly installed ubuntu 24.04.1 which version default kernel is 6.8.0-52 and works normally. #2 if firstly installed ubuntu 22.04.1 which version default kernel is 5.15, by upgrade, commands as follows: $ sudo apt update $ sudo apt dist-upgrade kernel will be upgrared to version 6.8.0-52. serval reboots tests, it can duplicate this issue: "After the update my boot would not get past the screen with the Lenovo and Ubuntu logos (right before the the login screen)." from xorg log, it seems to be that the display driver for loading the kernel at startup is one step slower. if switch it to terminal or login it by ssh port, you restart gdm3 by commands: $ sudo systemctl restart gdm3 system UI can boots up. so I tried to preload 'amdgpu' as follows: --------------------------------------------------------------------------- $ sudo echo "amdgpu" >> /etc/modules-load.d/modules.conf and regenerated ramdisk as follows:
lenovo@lenovo-ThinkPad-T14s-Gen-4:~$ cat /etc/modules-load.d/modules.conf amdgpu lenovo@lenovo-ThinkPad-T14s-Gen-4:~$ sudo update-initramfs -c -u update-initramfs: Generating /boot/initrd.img-6.8.0-52-generic ------------------------------------------------------------------------- Then, system reboot and it seems such block issue is disappear. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2095099 Title: T14s G4 AMD/T16 Gen 2 AMD not booting after update with 22.04 Status in linux package in Ubuntu: Incomplete Bug description: I have tested this issue on the T14s Gen 4 AMD and T16 Gen 2 AMD SVT1 with Kernel versions 6.8.0-49-generic and 6.8.0-51-generic. If I restart my system, it occasionally hangs at the Lenovo boot screen or just shows a black screen. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2095099/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
