M1 MBP & LG 34 inch ultra wide 5K2K

[nikosl7]

For info BetterDummy (1.0.7b) enables 3840x1620 in HiDPI with M1

WHERE HAVE YOU BEEN ALL OF THIS TIME?

Thank you!

 

[flapflapflap]

For info BetterDummy (1.0.7b) enables 3840x1620 in HiDPI with M1

More reason to stick with the M1 MBP!!!

 

[shapesinaframe]

BetterDummy is amazing 🙏

 

[Wolf1701]

More reason to stick with the M1 MBP!!!

Yep, this time, Waydabber (Istvan T. author of BetterDummy) deserves a donation way more than Tim 😂

 

[caaalebbb]

For info BetterDummy (1.0.7b) enables 3840x1620 in HiDPI with M1

Does this mean that with BetterDummy the M1 macs can support higher than 6k external monitors? Or is BetterDummy doing something different from forcing 7680x3240 and scaling to look like half that?

 

[Amethyst1]

Or is BetterDummy doing something different from forcing 7680x3240 and scaling to look like half that?

BetterDummy creates a virtual dummy monitor with a resolution of 7680×3240 so you get the 3840×1620 HiDPI mode on it. You then have to mirror this virtual monitor to your real screen.

 

[JWGraz]

Hi there, I am new in the forum and want to thank you for your valuable inputs.

Connecting my 34WK95U with my 2021 M1 MacBook Pro with Thunderbolt resulted in the Mac detecting the monitor as having a max resolution of 3440x1440 as many of us have experienced. No tool (SwithResX, BetterDummy etc.) or setting was able to change that. But with the recommended USB-C to DisplayPort cable I can get the full resolution.

Now it gets interesting: A friend of mine has the same setup: same M1 MacBook Pro, same monitor. At his the monitor works fine (sic!) even with Thunderbolt. The only difference between the monitors: Mine is built 4/2020, his 11/2020. So I guess it's the firmware?!

Does anyone know if and how I could update the firmware? The "OnScreen Control" tool 5.14 I downloaded from LG does not recognize the monitor.

 

[bill-p]

Connecting my 34WK95U with my 2021 M1 MacBook Pro with Thunderbolt resulted in the Mac detecting the monitor as having a max resolution of 3440x1440 as many of us have experienced.

Set the monitor to use DisplayPort 1.2 instead of DisplayPort 1.4.

 

[JWGraz]

Set the monitor to use DisplayPort 1.2 instead of DisplayPort 1.4.

Tried it, but without any change

 

[bill-p]

Tried it, but without any change

Oh, you're on M1 instead of M1 Pro, right? If that's the case, you may have to plug/unplug while in DisplayPort 1.2 occasionally.

If that doesn't work, while having the cable connected, switch to DisplayPort 1.4, then back to 1.2.

 

[JWGraz]

Oh, you're on M1 instead of M1 Pro, right? If that's the case, you may have to plug/unplug while in DisplayPort 1.2 occasionally.

If that doesn't work, while having the cable connected, switch to DisplayPort 1.4, then back to 1.2.

No, it's the new M1 Pro 16". I switched on/off/1.4/1.2 often, without any effect

 

[bill-p]

No, it's the new M1 Pro 16". I switched on/off/1.4/1.2 often, without any effect

I did try this with a 16" with M1 Max as well. It should work.

I have had this monitor since 2019 and I don't think I have ever updated the firmware on it. Are you using the included Thunderbolt cable?

 

[JWGraz]

Ohhh... You mean you get the full resolution connecting through Thunderbolt with a 2019 model. Then there goes my theory Thanks anyway.

 

[spark plugs.]

Hi there, I am new in the forum and want to thank you for your valuable inputs.

Connecting my 34WK95U with my 2021 M1 MacBook Pro with Thunderbolt resulted in the Mac detecting the monitor as having a max resolution of 3440x1440 as many of us have experienced. No tool (SwithResX, BetterDummy etc.) or setting was able to change that. But with the recommended USB-C to DisplayPort cable I can get the full resolution.

Now it gets interesting: A friend of mine has the same setup: same M1 MacBook Pro, same monitor. At his the monitor works fine (sic!) even with Thunderbolt. The only difference between the monitors: Mine is built 4/2020, his 11/2020. So I guess it's the firmware?!

Does anyone know if and how I could update the firmware? The "OnScreen Control" tool 5.14 I downloaded from LG does not recognize the monitor.

What happens if you connect to your friend’s monitor?

 

[JWGraz]

What happens if you connect to your friend’s monitor?

His computer + my TB cable + his monitor OK
His/my computer + my TB cable + my monitor not OK
(Again: my computer + DP cable + my monitor OK)
So, I guess the problems occurs only with specific examples (independent of production month/year) of the monitor, not Apples fault.
I opened a service request at LG. Let's see what (and if they respond

 

[srikat]

I am glad I went ahead with updating Big Sur to Monterey.

No more 3008 x 1269 resolution changing to 3440 × 1440 after my M1 mini wakes up.

 

[caaalebbb]

BetterDummy creates a virtual dummy monitor with a resolution of 7680×3240 so you get the 3840×1620 HiDPI mode on it. You then have to mirror this virtual monitor to your real screen.

Sorry of this is off-topic... but does this mean that the GPU is rendering a 7680x3240 resolution and, so we know that the limitation of horizontal resolutions to 6016 is not a hardware limitation?

 

[kbutler84]

Just ordered one of these go with my M1 Pro MBP. Just to confirm, I should’ve have any issues with scaling now with the new chip, correct?

 

[bill-p]

Just ordered one of these go with my M1 Pro MBP. Just to confirm, I should’ve have any issues with scaling now with the new chip, correct?

Well, I don't have issues with my 14" M1 Pro. It's pretty much just plug and play.

 

[srikat]

Well, I don't have issues with my 14" M1 Pro. It's pretty much just plug and play.

What's the resolution you have it at?

 

[bill-p]

What's the resolution you have it at?

Oh, it's in post #562 in this thread. 3200x1350.

It's slightly smaller than 3360x1418, but it makes texts more readable to me and still gives more screen real estate than 3008x1269.

 

[joevt]

Sorry of this is off-topic... but does this mean that the GPU is rendering a 7680x3240 resolution and, so we know that the limitation of horizontal resolutions to 6016 is not a hardware limitation?

Maybe. It depends if the scaling from BetterDummy's virtual display to the real display is similar enough to the scaling being done without a virtual display. One difference is that scaling from BetterDummy's virtual display is limited to 60 Hz?

 

[uploaded]

Hey guys!

Yesterday my new McBook Air M1 arrived - today the LG 38WN95C Ultrawide monitor .... I was already afraid that something was not running properly. BUT, I tell you, everything perfect, under macOS Monterey. Out of the box 3840x1600 @ 144 Hz!
I didn't have to adjust anything - I used the cable that came with the monitor. Super nice experience!

The fonts look sharp. Very comparable to my old Mac Thunderbolt display.

 

[currocj]

I'm very happy with performance on this display, by the way. The M1 is comparable to my 16" while running much cooler overall.

I couldn’t agree more! I picked up two 2018 Mac mini’s and a 2019 MBP 16” this year. All ran hot, and one was a frying pan, I opened it up to find the common but dreaded fan connector broken away from the the motherboard issue.

Well, needless to say, all were sold or traded in for: 2021 MBP 16” and two M1 Mac Minis with 16GB RAM. Three machines that run cool to the touch, a nice change and blazing performance!

 

[mario0]

Hey guys!

Yesterday my new McBook Air M1 arrived - today the LG 38WN95C Ultrawide monitor .... I was already afraid that something was not running properly. BUT, I tell you, everything perfect, under macOS Monterey. Out of the box 3840x1600 @ 144 Hz!
I didn't have to adjust anything - I used the cable that came with the monitor. Super nice experience!

The fonts look sharp. Very comparable to my old Mac Thunderbolt display.

View attachment 1907278

Hey Patrick,

that's the wrong thread. You talk about the 38WN95C which has only UWQHD resolution.