Original topic:
40 Inch ViewFinity S8 S85TH 5K2K Thunderbolt 5 issues on Mac! disconnecting HELP
(Post creation time:
07-7-2026 09:29 PM
)
3796 Views
P
Perfettonation
Constellation
I had a different brand widescreen monitor that used Thunderbolt 4, and I switched to this new monitor. The monitor is amazing, but the Thunderbolt 5 connection is not stable, stays connected, but the screen goes black while everything stays connected. If you disconnect it and connect it again, it comes on, and than goes black again. I tried different Thunderbolt 5 cables, researching settings etc. Nothing works! I see that a lot of other users have this issues as well. I think Samsung needs to issue a firmware update for Mac for the monitor. Using HDMI 2.1 works perfectly, but I cannot use the hub features. Samsung please find a way to fix this. The monitor stays connected with Thunderbolt 5, but the screen just goes black and does communicate well on Tahoe 26.5.2 M4 Max 128 RAM MacBook Pro.
jlvalle2020
Constellation
07-9-2026 05:33 AM
in
I have the same issue. It sucks hope Samsung have a fast solution to it, a shame of monitor that is not able to be connected as they announced on their webpage.
maybe_user696
Constellation
07-24-2026 04:20 PM
in
Is there any solution for this? I have just bought this monitor for my MacBook Pro 16" M4 Pro but I face this issue, the monitor is unusable....
testing12348723
Constellation
07-27-2026 06:38 PM
in
Samsung: Please share firmware update for this issue.
user_23fdjo0
Constellation
07-28-2026 02:40 AM
in
vtrubnikov
Constellation
08-12-2026 12:57 AM
in
I have the same issue and makes this monitor unusable for exactly the purpose it was bought for - one cable connection to my Macbook. If there is no new firmware fixing this, I'll be raising a return and refund request.
Pity, as I otherwise like the monitor, but there are other 5K2K options now with a working Thunderbolt.
It's been months now since the monitor was released, why is it so hard to release a patched firmware for such a huge issue?
Vinzcenzo
Constellation
08-18-2026 08:19 PM
in
Same issue here. I managed to find a temporary workaround by connecting an old Belkin TB3 dock, but this limits the refresh rate to 120Hz instead of 144Hz.
It's really frustrating, considering we are not dealing with entry-level devices, we're talking about a high-end monitor and a MacBook Pro with the M5 Pro chip, which is supposed to fully support Thunderbolt 5!
What I find particularly unacceptable for a 1000 USD monitor is the total lack of communication from Samsung. There is no official acknowledgment of the issue, nor any workaround or timeline provided.
In_Vision
Constellation
08-27-2026 08:12 PM
in
I too am experiencing the issue with my MacBook Pro M4 Max. Additionally, I'm having intermittent drops with my Lenovo ThinkPad. Sometimes it stays connected, and other times it will last about 3-5 minutes before it disconnects.
testing12348723
Constellation
09-2-2026 06:46 PM
in
Same issue here with 2025 MacBook Pro 16" — please fix this issue with a firmware update that we can fix via the monitor's USB port, Samsung.
cbrandel
Constellation
09-5-2026 10:27 PM
in
Same issue here. Connects for 5 seconds, screen goes blank. KVM continues to work but this is absolutely useless. I have to use DP or HDMI to get my display working. Samsung, please solve this. I can't do any of the things this monitor promised it could do. Tried a TB4 cable, nada. Tried 5 different TB5 cables - pricey - but still doesn't work.