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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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/349943
Title:
Screen blinks randomly on external monitor
Status in xorg package in Ubuntu:
Won't Fix
Bug description:
Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900)
OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium
x64 SP1)
External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI,
blinks several times a minute, randomly. When there is no user activity, it
doesn't seem to blink however.
By "blinking" I mean, the monitor goes off and then on, like it usually does
when it changes resolution, only resolution doesn't change. Also, when I move
windows around, thin horizontal stripes flash in fraction of second from time
to time (only on external monitor).
Screen configuration:
Samsung 24": On
Resolution: 1920x1200
Refresh rate: 60 Hz
Rotation: Normal
Laptop 14": On
Resolution: 1440x900
Refresh rate: 67 Hz
Rotation: Normal
Mirror screens: unchecked
Relative position of screens (physical and in Display Preferences)
laptop screen below the external screen, centred.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions
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