05-16-2019 01:35 PM
I have two identical LG 22MC57HQ-P external monitors hooked up to my P71, no dock in use. I have one hooked up via HDMI, and one hooked up via miniDP. The one hooked up via miniDP is always rock solid, sleeps and wakes up as it is supposed to. The one hooked up via HDMI, nothing but problems. It frequently, randomly, loses its signal and goes completely to powered down mode, requiring a button press to turn it back on. Sometimes, it is not able to pick a signal back up from the P71; even after unplugging/replugging, a reboot is required to get it to pick up a signal. I have switched the monitors, the problem stays with the one plugged into the HDMI port.
I have tried System Update/Vantage drivers, I have tried downloading them from Nvidia, problem persists. I have recently erased all graphics drivers from the system, rebooted, and let System Update grab the drivers from Lenovo, problem persists. I have tried Hybrid and Discrete options in the BIOS (currently on discrete, I think), problem persists.
I should also mention I have frequent BSOD issues as well, but I figured I'd see if I could fix this one major annoyance. Any help would be greatly appreciated!
05-17-2019 04:56 PM
Thank you for using the community forums. I did a quick research about the monitor and your laptop specifications. It shows that your monitor's resolution is 1920 x 1080@60Hz. The HDMI port where the monitor is plugged in supports 4096x2160@24Hz. You will see the specifications of your Thinkpad P71 on the link below. We highly suggest you to change the display settings of the monitor to go down to 24Hz refresh rate since this is supported by the HDMI port in order for the monitor work with the HDMI port.
Let us know how it goes.