Maybe there is a problem with newer kernel version that was installed during update.
Try to boot with the older kernel version that worked for you before.
Also, what Qubes OS version do you have and what kernel versions old/new do you have?
Maybe there is a problem with newer kernel version that was installed during update.
Try to boot with the older kernel version that worked for you before.
Also, what Qubes OS version do you have and what kernel versions old/new do you have?