I appreciate your patience while we investigated the concerns discussed here related to the X34 backlight waking from sleep. After working with you and performing our own testing, we found that this symptom is seen most often when lower brightness settings are selected. Unfortunately, a firmware or “do it yourself” solution is not possible to address this. Instead Acer has identified that a hardware level remedy is required. So currently our repair and contact centers are being brought up to speed to assist.
This means, we suggest contacting your local support team who can help setup the repair services. Our repair turnaround time is very short in most regions, which means you will only be without your X34 for a few days. Note that Acer is also taking steps to apply this solution to inventory that has not reached customers yet.
Again thank you for your patience and assistance in working through this.