I have the same problem after the last updates, my external monitor
blinking randomly! monitor is https://www.asus.com/Displays-
Desktops/Monitors/Eye-Care/VC239H/


$ hostnamectl
       Icon name: computer-laptop
         Chassis: laptop
Operating System: Fedora Linux 35 (Workstation Edition)
     CPE OS Name: cpe:/o:fedoraproject:fedora:35
          Kernel: Linux 5.15.11-200.fc35.x86_64
    Architecture: x86-64
 Hardware Vendor: ASUSTeK COMPUTER INC.
  Hardware Model: N56VJ


$ sudo lshw -C display
  *-display                 
       description: VGA compatible controller
       product: GF108M [GeForce GT 635M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:29 memory:f6000000-f6ffffff memory:e0000000-efffffff 
memory:f0000000-f1ffffff ioport:e000(size=128) memory:f7000000-f707ffff
  *-display
       description: VGA compatible controller
       product: 3rd Gen Core processor Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list
       configuration: driver=i915 latency=0
       resources: irq:27 memory:f7400000-f77fffff memory:d0000000-dfffffff 
ioport:f000(size=64) memory:c0000-dffff


$ rpm -qa |grep xorg-x11-server
xorg-x11-server-common-1.20.14-1.fc35.x86_64
xorg-x11-server-Xorg-1.20.14-1.fc35.x86_64
xorg-x11-server-Xephyr-1.20.14-1.fc35.x86_64
xorg-x11-server-Xwayland-21.1.4-1.fc35.x86_64

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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/349943

Title:
  Screen blinks randomly on external monitor

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