LR Classic crashes constantly with Alogic dockingstation

One item in your Sys Info that I overlooked

Library Path: C:\Users\carst\OneDrive - wittnielsen\Billeder\Lightroom\Lightroom Catalog-2-2-v13.lrcat

I think that the presence of OneDrive in that file path indicates you are automatically syncing (backing up) the catalog to OneDrive. Not that the catalog is on OneDrive.

Now while actually having the catalog on OneDrive would probably be fatal, just syncing should not. However, if OneDrive is acting up, issues might occur.

I blame this on Microsoft, they fairly much try to force people in having MS accounts on Windows, instead of local accounts.

You might try turning that sync to OneDrive off, and you might try with the catalog or a catalog not in that particular location.

This will take a bit of work that might not help at all.

Do you have checked that your system is up-to-date and all recent drivers, patches and so on and already all drivers for the Alogic are installed?

For checking you can use the Lenovo tool "System Update" You'll find it here:

Download Lenovo Tools for Administrators - Lenovo Support DE

As mentioned in posts before I would try to deactivate the internal GPU. Goto the Device Manager on Windows. In the Device Manager, right-click the card's name and choose "Disable".

Docking stations often cause crashes, and the main reason seems to be that they will hook the display up to the integrated GPU, not the discrete GPU. This causes conflicts.

Try without the docking station. If the crashing stops, you know where the problem is.

Lenovo Yoga Pro 7 14IRH8 laptop

so that would be the laptop in the following link:

• https://psref.lenovo.com/Product/Yoga/Yoga_Pro_7_14IRH8

And from that link, your ports are:

1x USB-A (USB 5Gbps / USB 3.2 Gen 1), Always On
1x USB-C (USB 10Gbps / USB 3.2 Gen 2), with USB PD 3.0 and DisplayPort™ 1.4
1x USB-C (Thunderbolt 4 / USB4® 40Gbps), with USB PD 3.0 and DisplayPort 1.4
1x HDMI 2.1, up to 4K/60Hz
1x Headphone / microphone combo jack (3.5mm)

Looks like either of the USB-C ports would be best for the external display, although the USB4 might be the best. However, the docking station and the monitor may not take advantage of the USB4 port. I do not kneo if backwards capability will be involved.

And as for your external monitor:

Dell U2719DC, 2550x1400

so that would be the monitor in the following link:

• https://dl.dell.com/manuals/all-products/esuprt_display_projector/esuprt_display/dell-u2719dc-monitor_user%27s-guide_en-us.pdf

and it has ports:

• 1 x DP 1.4 (HDCP 1.4)
• 1 x HDMI1.4 (HDCP 1.4)
• 1 x USB Type-C (Alternate mode with DisplayPort 1.4, USB 3.1 upstream port, Power Delivery PD up to 65 W)
• 1 x DP (Out) with MST (HDCP 1.4)
• 2 x USB 3.0 downstream port
• 2 x USB 3.0 with BC1.2 charging capability at 2A (max)
• 1 x Analog 2.0 audio line out (3.5mm jack)

Looks like the display best port is the USB type C (Alternate Mode)  3.1 upstream port. And their is no USB-C 3.2 capability, hence no Thunderbolt. So go for Display Port.

And a Alogic DUPRMX3 docking station is in use, perhaps this one??

• https://alogic.co/products/mx3-usb-c-triple-display-dp-alt-mode-docking-station-with-100w-power-delivery

And that Docking Station has the following ports:

Input:
USB-C
Output:
3 x DisplayPort (DP1.4/DP++)
2 x USB-A 3.1 Gen1(5G)
1x USB-C 3.1Gen 2(10G) BC 1.2 and Apple Charging Support
1 x 3.5mm TRRS Audio / Microphone Jack
1x USB-A3.1Gen 1(5G) BC 1.2 and Apple Charging Support
1 x RJ45 Ethernet 1Gbps
1 x SD Card Reader (SD 4.0)
1 x Micro SD Card Reader (SD 4.0)

So, only a UCB-C inpout of unknown capability (Gen 3.1? Gen 3.2?)

In the first of your setups, you have the following:

• Connect Laptop to Docking Station via USB-C cable
• Connect Docking Station to Monitor via DP 1.4 Cable

and your alternative setup is:

• Connect Laptop to Monitor via HDMI cable

Inquiries:

In the fist situation, some questions

• What port on the laptop did you connect the USB-C cable to?

In the second situation

• Why HDMI and not DP  via one of the two USB-C ports? (could be a DP cable issue as in size of connector at hand)

Summary, I am wondering about the various ports on the three devices, if they are compatible with each other. For example, USB-C, but full USB-C?

My first thought if I was connecting this rig up (and I may have the specs wrong) is USB-C (alternate DP) on laptop, to USB-C on Docking station (no other choice) then DP on the Docking station to the monitor

For without the docking station between laptop and monitor, USB-C to DP monitor.

Perhaps a visit to the Micro Center for a DP cable that has the correct connectors (full Dp vs mini DP)

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut out as that is just so much dead space to us non-Techs and it takes up vast amounts of scroll space making the reply less readable and less likely that others will bother with your post.