To address the issue of window flashing in Openbox, a systematic approach was taken:
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Update Graphics Drivers: Checked for and installed the latest graphics drivers, ensuring no outdated versions were causing the issue.
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Disable Xcompmgr: Identified that Xcompmgr might be interfering with window management. Disabled it temporarily to test if the flashing stopped.
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Adjust Monitor Settings: Reviewed display configurations, including refresh rates and scaling, to optimize for hardware compatibility.
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Check Hardware Connections: Ensured all cables were secure and considered testing alternative cables or ports.
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Review Openbox Configuration: Examined rc.xml and other config files for settings affecting window behavior, considering adjustments to effects and compositing options.
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Reinstallation Consideration: Prepared to reinstall Openbox or the desktop environment if necessary, though this step was not needed as earlier fixes resolved the issue.
By methodically testing each potential cause, the problem was effectively identified and addressed.