12-14-2018 02:29 AM - edited 12-14-2018 02:30 AM
Dear Lenovo Community,
we are experiencing major performance drops when chaining 2 Displays using displayport 1.2 on a L540. The performance drops to like 1-10 FPS in windows. We tried to fix the problem with using the newst firmware / drivers and bios update. Turns out it didnt help at all.
See attachment for the stats of the machine.
The strange part about this is that we are using the exact same setup a L540 (same stats) and same displays, newst firmware, drivers for another employee without any issues.
we are using 2x DellUltraSharpU2415 Displays. (chaining from one Display to another with Displayport cables and enabling displayport 1.2)
If anyone knows a solution to this problem, please share it.
thanks in advance.
01-29-2019 01:25 PM
Hi LenovoUser2018! Welcome to our forums community. Did it work before? If yes, have you made any changes or any recent updates before the issue arise? Try also to check if there are pending Windows update. Run Lenovo Vantage app to check updates. Install all available updates.