Users of the Samsung QN700B monitor may encounter resolution issues when reconnecting or turning their monitor back on. This article provides a comprehensive guide to understanding and resolving these issues.
Table of Contents
Problem Description
The Samsung QN700B monitor is designed to support 8K resolution. However, users have reported that upon waking the TV and computer, the resolution defaults to 4K and becomes stuck, unable to revert to 8K.
Symptoms
- Initially, a black screen appears when the TV/computer are turned back on.
- Using Ctrl-Alt-F1/F2 wakes the screen into 4K resolution.
- The nvidia-settings command does not list 8K as an available resolution.
- Attempts to force 8K resolution using xrandr result in a BadMatch error.
Solution 1: Xorg Configuration
Adjusting the Xorg configuration file may help. Users should ensure the PreferredMode is set to “7680×4320” and that the CustomEDID option points to the correct EDID file.
Solution 2: Nvidia Settings
Using nvidia-settings, users can download the EDID and attempt to force it in the Xorg configuration. However, this may not always work.
Solution 3: Using xrandr
The xrandr utility can be used to add new modes, but users may encounter errors if the parameters are not correct.
Frequently Asked Questions (FAQs)
Question: What is EDID?
Answer: EDID (Extended Display Identification Data) is a metadata format for display devices to communicate their capabilities to a video source.
Question: Can I keep my monitor on 24/7 to avoid this issue?
Answer: While this is a workaround, it is not recommended due to potential long-term damage to the monitor.
Question: Are there any risks to updating firmware?
Answer: Firmware updates can resolve issues but may also carry risks if not performed correctly.
Summary
Users experiencing 8K resolution issues with the Samsung QN700B monitor on Linux can try adjusting their Xorg configuration or using nvidia-settings and xrandr to troubleshoot the problem. It is important to handle firmware updates with care.
Disclaimer
This article is intended for informational purposes only. Users should proceed with caution and consult professional IT support if necessary.