Yes, i use below in my /etc/default/grub and switch kernel during boot
```
GRUB_SAVEDEFAULT=true
GRUB_DEFAULT=saved
GRUB_TIMEOUT=10
```
The dmesg for both kernel is attached. Note that in 5.4.0-91-generic kernel, i modprobe cifs and mount again manually after boot, so cifs loaded log is much later(about 200 seconds)
Yes, i use below in my /etc/default/grub and switch kernel during boot T=true
```
GRUB_SAVEDEFAUL
GRUB_DEFAULT=saved
GRUB_TIMEOUT=10
```
The dmesg for both kernel is attached. Note that in 5.4.0-91-generic kernel, i modprobe cifs and mount again manually after boot, so cifs loaded log is much later(about 200 seconds)