Fedora 33 gnome desktop system freeze on screenblank

Hi, I have upgraded to Fedora 33, and when the screenblank is activated, the system freezes.
The computer is a Lenovo Yoga 720-13IKB.
CPU: Intel(R) Core™ i7-8550U CPU @ 1.80GHz
The graphics controller is Intel Corporation UHD Graphics 620 (rev 07).
kernel is 5.11.11-200.fc33.x86_64 but prev versions also had the problem, also tried 5.10, 5.9 kernels with current system, and the problem is not solved.
I am using gnome desktop and gdm.
It is not possible to ssh to the system and does not answer ping.
It is not possible to switch virtual console.
I use Weyland but problem remained when switching to X11.
There is nothing in dmesg or journal about the problem (no message at time of freeze).
If I plug something into USB A port, the system does not freeze.
The system already had some wakeup problems before this when closed and hybernating, but nothing like this.

Can give any further info if requested.
Thanks for solving this problem.