Slow, occational flicker on Monterey 12.5.1 (for M1) and DisplayLink Manager 1.7.1

FredrikWendt · 08-24-2022, 04:09 PM

I upgraded the OS and DisplayLink Manager after summer vacations, and now I'm getting occasional "flicker", or hick-ups, or replays of previously drawn screens. It usually happens after having entered some text, like I'm doing when writing this text here. Whenever I pause, the last letter "disappears" from the screen during ~300 milliseconds, before it appears again. I've figured out that its the full screen that's redrawn, first in a previous state, and then back to latest, actual state. I can switch browser tabs with a mouse/pointer device without causing this to happen, but when I change tabs using keyboard, the flicker appears about every 5-10 seconds.

This is incredibly frustrating. I will try to roll back DisplayLink Manager to a useable version.

FredrikWendt · 09-10-2022, 06:47 AM

I tried the new Alpha, and the same problem exists there. Turning on the new HiDPPI feature didn't make any difference.

I've downgraded to 1.6.1, which doesn't have this bug.

FredrikWendt · 09-10-2022, 07:01 AM

The computer is a MacBook Air (M1, 2020) with 16 GB RAM.

Code:

  System Firmware Version:	7459.141.1
  OS Loader Version:	7459.141.1

The DisplayLink adapter is a Belkin Dual Display USB-C Dock Model INC002 (R-R-K7S-INC002).

The two external monitors connected are both identical Samsung S27R65, attached with HDMI in both ends (no additional adapters).

Code:

Apple M1:

  Chipset Model:	Apple M1
  Type:	GPU
  Bus:	Built-In
  Total Number of Cores:	7
  Vendor:	Apple (0x106b)
  Metal Family:	Supported, Metal GPUFamily Apple 7
  Displays:
S27R65:
  Resolution:	1920x1080 (1080p FHD - Full High Definition)
  UI Looks like:	1920 x 1080 @ 60.00Hz
  Main Display:	Yes
  Mirror:	Off
  Online:	Yes
  Rotation:	Supported
Colour LCD:
  Display Type:	Built-In Retina LCD
  Resolution:	2560x1600 Retina
  Mirror:	Off
  Online:	Yes
  Automatically Adjust Brightness:	Yes
  Connection Type:	Internal
S27R65:
  Resolution:	1920x1080 (1080p FHD - Full High Definition)
  UI Looks like:	1920 x 1080 @ 60.00Hz
  Mirror:	Off
  Online:	Yes
  Rotation:	Supported

08-24-2022, 04:09 PM	#1
FredrikWendt Junior Member Join Date: Aug 2022 Posts: 3	Slow, occational flicker on Monterey 12.5.1 (for M1) and DisplayLink Manager 1.7.1 I upgraded the OS and DisplayLink Manager after summer vacations, and now I'm getting occasional "flicker", or hick-ups, or replays of previously drawn screens. It usually happens after having entered some text, like I'm doing when writing this text here. Whenever I pause, the last letter "disappears" from the screen during ~300 milliseconds, before it appears again. I've figured out that its the full screen that's redrawn, first in a previous state, and then back to latest, actual state. I can switch browser tabs with a mouse/pointer device without causing this to happen, but when I change tabs using keyboard, the flicker appears about every 5-10 seconds. This is incredibly frustrating. I will try to roll back DisplayLink Manager to a useable version.

09-10-2022, 06:47 AM	#2
FredrikWendt Junior Member Join Date: Aug 2022 Posts: 3	Update I tried the new Alpha, and the same problem exists there. Turning on the new HiDPPI feature didn't make any difference. I've downgraded to 1.6.1, which doesn't have this bug.

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